# Contingency Tables

This documentation describes the fine-resolution contingency tables produced by grouping COVID-19 Trends and Impact Survey (CTIS) individual responses by various self-reported demographic features.

These contingency tables provide granular breakdowns of COVID-related topics such as vaccine uptake and acceptance. They are more detailed than the coarse aggregates reported in the COVIDcast Epidata API, which are grouped only by geographic region. Individual response data for the survey is available, but only to academic or nonprofit researchers who sign a Data Use Agreement, whereas these contingency tables are available to the general public.

Please see our survey credits and citation information for information on how to cite this data if you use it in a publication.

Important updates for data users, including corrections to data or updates on data processing delays, are posted as OUTAGES.txt in the directory where the data is hosted.

1. Available Data
2. File Format
3. Indicators
1. Symptoms
2. Behaviors
3. Testing
4. Vaccines
5. Mental Health Indicators
6. Beliefs
7. Medical Care Experiences Indicators
8. News and Information Indicators

## Available Data

We currently provide data files at several levels of geographic and temporal aggregation. The reason for this is that each file is filtered to only include estimates for a particular group if that group includes 100 or more responses. Providing several levels of granularity allows us to provide coverage for a variety of use cases. For example, users who need the most up-to-date data or are interested in time series analysis should use the weekly files, while those who want to study groups with smaller sample sizes should use the monthly files. Because monthly aggregates include more responses, they have lower missingness when grouping by several features at a time.

Files contain all time periods for a given period type-aggregation type combination.

Individual CSVs containing a single week or month for a given aggregation type are also available.

### Dates

The included files provide estimates for various metrics of interest over a period of either a full epiweek (or MMWR week, a standardized numbering of weeks throughout the year) or a full calendar month.

Note: If a survey item was introduced in the middle of an aggregation period, derived indicators will be included in aggregations for that period but will only use a partial week or month of data.

### Regions

At the moment, only nation-wide and state groupings are available.

Facebook only invites users to take the survey if they appear, based on attributes in their Facebook profiles, to reside in the 50 states or Washington, DC. Puerto Rico is sampled separately as part of the international version of the survey. If Facebook believes a user qualifies for the survey, but the user then replies that they live in Puerto Rico or another US territory, we do not include their response in the aggregations.

### Privacy

The aggregates are filtered to only include estimates for a particular group if that group includes 100 or more responses. Especially in the weekly aggregates, many of the state-level groups have been filtered out due to low sample size. In such cases, files that group by a single demographic of interest will likely provide more coverage.

## File Format

### Naming

“Rollup” files containing all time periods for a given period type-aggregation type combination have names of the form:

{period_type}_{geo_type}_{aggregation_type}.csv.gz


CSVs for individual time periods have names of the form:

{period_start}_{period_end}_{period_type}_{geo_type}_{aggregation_type}.csv


Dates are in yyyyMMdd format. period_start refers to the first day of the time period survey responses were aggregated over, in the Pacific time zone (UTC - 7). Unless noted otherwise, the time period is always a complete month (period_type = monthly) or epiweek (period_type = weekly). geo_type is the geographic level responses were aggregated over. aggregation_type is a concatenated list of other grouping variables used, ordered alphabetically. Values for variables used in file naming align with those within files as specified in the column section below.

### Columns

Within a CSV, the first few columns store metadata of the aggregation:

Column Description
survey_geo Survey geography (“US”)
period_start Date of first day of time period used in aggregation
period_end Date of last day of time period used in aggregation
period_val Month or week number
geo_type Geography type (“state”, “nation”)
aggregation_type Concatenated list of grouping variables, ordered alphabetically
country Country name (“United States”)
ISO_3 Three-letter ISO country code (“USA”)
GID_0 GADM level 0 ID
state State name; “Overall” if aggregation not grouped at the state level
GID_1 GADM level 1 ID
state_fips State FIPS code; NA if aggregation not grouped at the state level
county County name; “Overall” if aggregation not grouped at the county level
county_fips County FIPS code; NA if aggregation not grouped at the county level
issue_date Date on which estimates were generated

These are followed by the grouping variables used in the aggregation, ordered alphabetically, and the indicators. Each indicator reports four columns (unrounded):

• val_<indicator name>: the main value of interest, e.g., percent, average, or count, estimated using the survey weights to better match state demographics
• se_<indicator name>: the standard error of val_<indicator name>
• sample_size_<indicator name>: the number of survey responses used to calculate val_<indicator name>
• represented_<indicator name>: the number of people in the population that val_<indicator name> represents over all days in the given time period. This is the sum of survey weights for all survey responses used.

All aggregates using the same set of grouping variables appear in a single CSV.

### Missing Values

Grouping variables (including region) will be missing (NA) to represent respondents who provided one or more responses to survey items used for indicators (e.g., vaccine uptake) but who did not provide a response to the survey item used for the particular grouping variable. For example, if grouping by gender, we would report the groups: male, female, other, and NA, respondents who did not provide a response to the gender question.

For a given respondent group (25-34 year old healthcare workers in Nebraska, e.g.) sample size can vary by indicator because of the survey display logic. For example, all respondents are asked if they have received a COVID-19 vaccination (item V1), but only those who say they have are asked how many doses they have received (item V2). This means that the sample size for V2 is smaller than that for V1. Because indicators are censored individually, it is possible that V1-derived indicators will be reported for a given group while V2-derived indicators are not. In this case, the V2-derived indicator columns will be marked as missing (NA) for that group.

## Indicators

The files contain weighted estimates of the percent of respondents who fulfill one or several criteria. Estimates are broken out by state, age, gender, race, ethnicity, occupation, and health conditions.

Indicators beginning “hesitant_” (not listed) are variants of other described indicators calculated among respondents who say they would “probably not” or “definitely not” choose to get vaccinated, if offered today (item V3/V3a). Note: Until Wave 11 (May 19, 2021), this item was asked of everyone who indicated that they had not received a COVID-19 vaccine; after that date, this item was only asked of people who indicated that they had not received a COVID-19 vaccine and did not have an appointment to do so.

Indicators beginning “defno_” (not listed) are variants of other described indicators calculated among respondents who say they would “definitely not” choose to get vaccinated, if offered today.

We plan to expand this list of indicators based on research needs; if you have a public health or research need for a particular variable not listed here, please contact us at delphi-survey-info@lists.andrew.cmu.edu.

### Symptoms

#### ILI and CLI

Indicator Description Survey Item
pct_cli Estimated percentage of people with COVID-like illness, using the same definition as in the API.
Earliest date available: 2021-01-01
A1 and A2
pct_ili Estimated percentage of people with influenza-like illness, using the same definition as in the API.
Earliest date available: 2021-01-01
A1 and A2
pct_hh_cmnty_cli Estimated percentage of people reporting illness in their local community, including their household, using the same definition as in the API.
Earliest date available: 2021-01-01
A1, A2, and A4

#### Individual Symptoms

These indicators are accompanied by variants with the suffix _unusual reporting the estimated percentage of respondents experiencing a given symptom as new or unusual, out of all respondents reporting that symptom in the last 24 hours.

Indicator Description Survey Item
pct_anosmia Estimated percentage of respondents experiencing loss of smell or taste in the last 24 hours.
Earliest date available: 2021-01-01
B2
pct_symp_fever Estimated percentage of people experiencing a fever in the last 24 hours.
Earliest date available: 2021-05-16
B2
pct_symp_cough Estimated percentage of people experiencing a cough in the last 24 hours.
Earliest date available: 2021-05-16
B2
pct_symp_shortness_breath Estimated percentage of people experiencing shortness of breath in the last 24 hours.
Earliest date available: 2021-05-16
B2
pct_symp_diff_breathing Estimated percentage of people experiencing difficulty breathing in the last 24 hours.
Earliest date available: 2021-05-16
B2
pct_symp_fatigue Estimated percentage of people experiencing fatigue in the last 24 hours.
Earliest date available: 2021-05-16
B2
pct_symp_stuffy_nose Estimated percentage of people experiencing a stuffy or runny nose in the last 24 hours.
Earliest date available: 2021-05-16
B2
pct_symp_aches Estimated percentage of people experiencing muscle or joint aches in the last 24 hours.
Earliest date available: 2021-05-16
B2
pct_symp_sore_throat Estimated percentage of people experiencing a sore throat in the last 24 hours.
Earliest date available: 2021-05-16
B2
pct_symp_chest_pain Estimated percentage of people experiencing chest pain or pressure in the last 24 hours.
Earliest date available: 2021-05-16
B2
pct_symp_nausea Estimated percentage of people experiencing nausea or vomiting in the last 24 hours.
Earliest date available: 2021-05-16
B2
pct_symp_diarrhea Estimated percentage of people experiencing diarrhea in the last 24 hours.
Earliest date available: 2021-05-16
B2
pct_symp_other Estimated percentage of people experiencing other symptoms in the last 24 hours.
Earliest date available: 2021-05-16
B2
pct_symp_none Estimated percentage of people experiencing none of the listed symptoms in the last 24 hours.
Earliest date available: 2021-05-16
B2
pct_symp_chills Estimated percentage of people experiencing chills in the last 24 hours.
Earliest date available: 2021-05-16
B2
pct_symp_headache Estimated percentage of people experiencing a headache in the last 24 hours.
Earliest date available: 2021-05-16
B2
pct_symp_nasal_congestion Discontinued as of Wave 11, May 19, 2021 Estimated percentage of people experiencing nasal congestion in the last 24 hours. B2
pct_symp_eye_pain Discontinued as of Wave 11, May 19, 2021 Estimated percentage of people experiencing eye pain in the last 24 hours. B2
pct_symp_sleep_changes Discontinued as of Wave 11, May 19, 2021 Estimated percentage of people experiencing changes in sleep in the last 24 hours. B2
pct_symp_runny_nose Discontinued as of Wave 11, May 19, 2021 Estimated percentage of people experiencing a runny nose in the last 24 hours. B2

### Behaviors

Indicator Description Survey Item
pct_others_masked_public Estimated percentage of respondents who say that most or all other people wear masks, when they are in public.
Earliest date available: 2021-05-16
H2
pct_wearing_mask_7d Estimated percentage of people who wore a mask for most or all of the time while in public in the past 7 days; those not in public in the past 7 days are not counted.
Earliest date available: 2021-02-08
C14a
pct_mask_public_transit_1d Estimated percentage of respondents who reported using a mask while using public transit, of all respondents who used public transit in the past 24 hours
Earliest date available: 2020-08-16
C13 or C13b, and C13a or C13c
pct_mask_work_outside_home_indoors_1d Estimated percentage of respondents who reported using a mask while working or going to school indoors and outside their home, of all resondents who worked or went to school outside their home in the past 24 hours
Earliest date available: 2021-08-06
C13b and C13c
pct_mask_shop_indoors_1d Estimated percentage of respondents who reported using a mask while going to an “indoor market, grocery store, or pharmacy”, of all respondents who did this activity in the past 24 hours
Earliest date available: 2021-08-06
C13b and C13c
pct_mask_restaurant_indoors_1d Estimated percentage of respondents who reported using a mask while going to an indoor “bar, restaurant, or cafe”, of all respondents who did this activity in the past 24 hours
Earliest date available: 2021-08-06
C13b and C13c
pct_mask_spent_time_indoors_1d Estimated percentage of respondents who reported using a mask while spending time “indoors with someone who isn’t currently staying with you”, of all respondents who did this activity in the past 24 hours
Earliest date available: 2021-08-06
C13b and C13c
pct_mask_large_event_indoors_1d Estimated percentage of respondents who reported using a mask while attending “an indoor event with more than 10 people”, of all respondents who did this activity in the past 24 hours
Earliest date available: 2021-08-06
C13b and C13a
pct_mask_shop_1d Discontinued as of Wave 10, Mar 2, 2021 Estimated percentage of respondents who went to a “market, grocery store, or pharmacy”, of all respondents who did this activity in the past 24 hours. C13 and C13a
pct_mask_restaurant_1d Discontinued as of Wave reported using a mask while 10, Mar 2, 2021 Estimated percentage of respondents who went to a “bar, restaurant, or cafe”, of all respondents who did this activity in the past 24 hours. C13 and C13a
pct_mask_large_event_1d Discontinued as of Wave 10, Mar 2, 2021 Estimated percentage of respondents who “attended an event with more than 10 people”, of all respondents who did this activity in the past 24 hours. C13 and C13a
pct_mask_work_outside_home_1d Discontinued as of Wave 10, Mar 2, 2021 Estimated percentage of respondents who worked or went to school outside their home, of all respondents who did this activity in the past 24 hours. C13 and C13a
pct_mask_spent_time_1d Discontinued as of Wave 10, Mar 2, 2021 Estimated percentage of respondents who “spent time with someone who isn’t currently staying with you”, of all respondents who did this activity in the past 24 hours. C13 and C13a
pct_wearing_mask_5d Discontinued as of Wave 8, Feb 8, 2021 Estimated percentage of people who wore a mask for most or all of the time while in public in the past 5 days; those not in public in the past 5 days are not counted.
Earliest date available: 2021-01-01
C14
pct_direct_contact Discontinued as of Wave 11, May 19, 2021 Estimated percentage of people who in the past 24 hours had a non-physical interaction (like conversing) for more than 5 minutes at a distance of 6 feet or less or a physical interaction (like hand-shaking, hugging, or kissing) with anyone outside their household.
Earliest date available: 2021-01-01
C10

#### Social Distancing and Travel

Indicator Description Survey Item
pct_others_distanced_public Estimated percentage of respondents who reported that all or most people they enountered in public in the past 7 days maintained a distance of at least 6 feet. Respondents who said that they have not been in public for the past 7 days are excluded.
Earliest date available: 2021-05-16
H1
pct_public_transit_1d Estimated percentage of respondents who “used public transit” in the past 24 hours
Earliest date available: 2020-08-16
C13 or C13b
pct_work_outside_home_indoors_1d Estimated percentage of respondents who worked or went to school indoors and outside their home in the past 24 hours
Earliest date available: 2021-08-06
C13b
pct_shop_indoors_1d Estimated percentage of respondents who went to an “indoor market, grocery store, or pharmacy” in the past 24 hours
Earliest date available: 2021-08-06
C13b
pct_restaurant_indoors_1d Estimated percentage of respondents who went to an indoor “bar, restaurant, or cafe” in the past 24 hours
Earliest date available: 2021-08-06
C13b
pct_spent_time_indoors_1d Estimated percentage of respondents who “spent time indoors with someone who isn’t currently staying with you” in the past 24 hours
Earliest date available: 2021-08-06
C13b
pct_large_event_indoors_1d Estimated percentage of respondents who “attended an indoor event with more than 10 people” in the past 24 hours
Earliest date available: 2021-08-06
C13b
pct_travel_outside_state_7d Estimated percentage of respondents who report traveling outside their state in the past 7 days. This item was asked of respondents starting in Wave 10.
Earliest date available: 2021-08-06
C13b
pct_travel_outside_state_5d Discontinued as of Wave 10, Mar 2, 2021 Estimated percentage of respondents who report traveling outside their state in the past 5 days. C6
pct_shop_1d Discontinued as of Wave 10, Mar 2, 2021 Estimated percentage of respondents who went to a “market, grocery store, or pharmacy” in the past 24 hours. C13
pct_restaurant_1d Discontinued as of Wave 10, Mar 2, 2021 Estimated percentage of respondents who went to a “bar, restaurant, or cafe” in the past 24 hours. C13
pct_spent_time_1d Discontinued as of Wave 10, Mar 2, 2021 Estimated percentage of respondents who “spent time with someone who isn’t currently staying with you” in the past 24 hours. C13
pct_large_event_1d Discontinued as of Wave 10, Mar 2, 2021 Estimated percentage of respondents who “attended an event with more than 10 people” in the past 24 hours. C13
pct_work_outside_home_1d Discontinued as of Wave 10, Mar 2, 2021 Estimated percentage of respondents who worked or went to school outside their home in the past 24 hours. C13

### Testing

Indicator Description Survey Item
pct_tested_14d Estimated percentage of people who were tested for COVID-19 in the past 14 days, regardless of their test result
Earliest date available: 2021-05-16
B8, B10
pct_tested_positive_14d Estimated test positivity rate (percent) among people tested for COVID-19 in the past 14 days
Earliest date available: 2021-05-16
B10a or B10c
pct_had_covid_ever Estimated percentage of people who report having ever had COVID-19.
Earliest date available: 2021-05-16
B13
pct_wanted_test_14d Discontinued as of Wave 11, May 19, 2021 Estimated percentage of people who wanted to be tested for COVID-19 in the past 14 days, out of people who were not tested in that time. B12
pct_ever_tested Discontinued as of Wave 11, May 19, 2021 Estimated percentage of people who have ever been tested for COVID-19. B8

#### Testing Reasons

Indicator Description Survey Item
pct_test_reason_sick Estimated percentage of people who were tested because they felt sick, out of all respondents tested in the last 14 days.
Earliest date available: 2021-05-16
B10b
pct_test_reason_contact Estimated percentage of people who were tested because they were in contact with someone who was sick, out of all respondents tested in the last 14 days.
Earliest date available: 2021-05-16
B10b
pct_test_reason_medical Estimated percentage of people who were tested because they were receiving medical care, out of all respondents tested in the last 14 days.
Earliest date available: 2021-05-16
B10b
pct_test_reason_required Estimated percentage of people who were tested because their work or school required it, out of all respondents tested in the last 14 days.
Earliest date available: 2021-05-16
B10b
pct_test_reason_visit Estimated percentage of people who were tested so that they could visit family and friends, out of all respondents tested in the last 14 days.
Earliest date available: 2021-05-16
B10b
pct_test_reason_travel Estimated percentage of people who were tested because it was required for travel, out of all respondents tested in the last 14 days.
Earliest date available: 2021-05-16
B10b
pct_test_reason_none Estimated percentage of people who reported that none of the listed reasons described why they were tested, out of all respondents tested in the last 14 days.
Earliest date available: 2021-05-16
B10b
pct_test_reason_large_event Discontinued as of Wave 11, May 19, 2021 Estimated percentage of people who were tested because they attended a large outdoor event or gathering, out of all respondents tested in the last 14 days. B10b
pct_test_reason_crowd Discontinued as of Wave 11, May 19, 2021 Estimated percentage of people who were tested because they were in a crowded indoor environment, out of all respondents tested in the last 14 days. B10b

### Vaccines

#### Vaccine Uptake and Acceptance

Indicator Description Survey Item
pct_vaccinated Estimated percentage of respondents who have already received a COVID vaccine.
Earliest date available: 2021-01-01
V1
pct_received_2_vaccine_doses Estimated percentage of respondents who have received two doses of a COVID-19 vaccine, among respondents who have received either one or two doses of a COVID-19 vaccine.
Earliest date available: 2021-01-01
V2
pct_vaccinated_appointment_or_accept Estimated percentage of respondents who either have already received a COVID vaccine or have an appointment to get a COVID vaccine or would definitely or probably choose to get vaccinated, if a vaccine were offered to them today.
Earliest date available: 2021-05-19
V1, V11a, V3a
pct_appointment_or_accept_vaccine Estimated percentage of respondents who either have an appointment to get a COVID-19 vaccine or would definitely or probably choose to get vaccinated, if a vaccine were offered to them today, among respondents who have not yet been vaccinated.
Earliest date available: 2021-05-19
V11a, V3a
pct_accept_vaccine_no_appointment Estimated percentage of respondents who would definitely or probably choose to get vaccinated, if a vaccine were offered to them today, among respondents who have not yet been vaccinated and do not have an appointment to do so.
Earliest date available: 2021-05-19
V3a
pct_covid_vaccinated_friends Estimated percentage of respondents who report that most of their friends and family have received a COVID-19 vaccine.
Earliest date available: 2021-05-16
H3
pct_vaccinate_children Estimated percentage of respondents with children who report that they will definitely or probably get the vaccine for their children.
Earliest date available: 2021-05-16
E4
pct_hesitant_vaccine Estimated percentage of respondents who would definitely not or probably not choose to get vaccinated, if a vaccine were offered to them today, among respondents who have not yet been vaccinated. Note: Until Wave 11 (May 19, 2021), this item was asked of everyone who indicated that they had not received a COVID-19 vaccine; after that date, this item was only asked of people who indicated that they had not received a COVID-19 vaccine and did not have an appointment to do so.
Earliest date available: 2021-01-01
V3 or V3a
pct_accept_vaccine_no_appointment_defyes Estimated percentage of respondents who would definitely choose to get vaccinated, if a vaccine were offered to them today, among respondents who have not yet been vaccinated and do not have an appointment to do so.
Earliest date available: 2021-05-19
V3a
pct_accept_vaccine_no_appointment_probyes Estimated percentage of respondents who would probably choose to get vaccinated, if a vaccine were offered to them today, among respondents who have not yet been vaccinated and do not have an appointment to do so.
Earliest date available: 2021-05-19
V3a
pct_accept_vaccine_no_appointment_probno Estimated percentage of respondents who would probably not choose to get vaccinated, if a vaccine were offered to them today, among respondents who have not yet been vaccinated and do not have an appointment to do so.
Earliest date available: 2021-05-19
V3a
pct_accept_vaccine_no_appointment_defno Estimated percentage of respondents who would definitely not choose to get vaccinated, if a vaccine were offered to them today, among respondents who have not yet been vaccinated and do not have an appointment to do so.
Earliest date available: 2021-05-19
V3a
pct_vaccinated_or_accept Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who either have already received a COVID-19 vaccine or would definitely or probably choose to get vaccinated, if a vaccine were offered to them today.
Earliest date available: 2021-01-01
V1, V3
pct_accept_vaccine Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who would definitely or probably choose to get vaccinated, if a vaccine were offered to them today, among respondents who have not yet been vaccinated.
Earliest date available: 2021-01-01
V3
pct_accept_vaccine_defyes Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who would definitely choose to get vaccinated, if a vaccine were offered to them today, among respondents who have not yet been vaccinated.
Earliest date available: 2021-01-01
V3
pct_accept_vaccine_probyes Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who would probably choose to get vaccinated, if a vaccine were offered to them today, among respondents who have not yet been vaccinated.
Earliest date available: 2021-01-01
V3
pct_accept_vaccine_probno Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who would probably not choose to get vaccinated, if a vaccine were offered to them today, among respondents who have not yet been vaccinated.
Earliest date available: 2021-01-01
V3
pct_accept_vaccine_defno Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who would definitely not choose to get vaccinated, if a vaccine were offered to them today, among respondents who have not yet been vaccinated.
Earliest date available: 2021-01-01
V3
pct_informed_access Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who are very or moderately informed about how to get a COVID-19 vaccination.
Earliest date available: 2021-02-08
V13
pct_appointment_not_vaccinated Estimated percentage of respondents who have an appointment to get a COVID-19 vaccine, among respondents who have not yet been vaccinated.
Earliest date available: 2021-05-19
V11a
pct_appointment_have Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who have an appointment to get a COVID-19 vaccine, among respondents who answered “Yes, definitely” or “Yes, probably” when asked if they would get vaccinated if offered.
Earliest date available: 2021-03-02
V11
pct_vaccine_tried Estimated percentage of respondents who have tried to get a COVID-19 vaccine, among respondents who answered “Yes, definitely” or “Yes, probably” when asked if they would get vaccinated if offered.
Earliest date available: 2021-05-19
V12a
pct_appointment_tried Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who have tried to make an appointment to get a COVID-19 vaccine, among respondents who answered “Yes, definitely” or “Yes, probably” when asked if they would get vaccinated if offered.
Earliest date available: 2021-03-02
V12

#### Vaccine Timing

Indicator Description Survey Item
pct_vaccine_timing_weeks Estimated percentage of respondents who say they will try to get the vaccine within a week or two, out of respondents who have not yet been vaccinated, do not have an appointment to do so, and are unsure if they would choose to get vaccinated (answering that they would either “yes, probably” or “no, probably not” get vaccinated if offered today).
Earliest date available: 2021-05-16
V16
pct_vaccine_timing_onemonth Estimated percentage of respondents who say they will try to get the vaccine within a month, out of respondents who have not yet been vaccinated, do not have an appointment to do so, and are unsure if they would choose to get vaccinated (answering that they would either “yes, probably” or “no, probably not” get vaccinated if offered today).
Earliest date available: 2021-05-16
V16
pct_vaccine_timing_threemonths Estimated percentage of respondents who say they will try to get the vaccine within three months, out of respondents who have not yet been vaccinated, do not have an appointment to do so, and are unsure if they would choose to get vaccinated (answering that they would either “yes, probably” or “no, probably not” get vaccinated if offered today).
Earliest date available: 2021-05-16
V16
pct_vaccine_timing_sixmonths Estimated percentage of respondents who say they will try to get the vaccine within six months, out of respondents who have not yet been vaccinated, do not have an appointment to do so, and are unsure if they would choose to get vaccinated (answering that they would either “yes, probably” or “no, probably not” get vaccinated if offered today).
Earliest date available: 2021-05-16
V16
pct_vaccine_timing_morethansix Estimated percentage of respondents who say they will try to get the vaccine in more than six months, out of respondents who have not yet been vaccinated, do not have an appointment to do so, and are unsure if they would choose to get vaccinated (answering that they would either “yes, probably” or “no, probably not” get vaccinated if offered today).
Earliest date available: 2021-05-16
V16
pct_vaccine_timing_dontknow Estimated percentage of respondents who don’t know when they will try to get the vaccine, out of respondents who have not yet been vaccinated, do not have an appointment to do so, and are unsure if they would choose to get vaccinated (answering that they would either “yes, probably” or “no, probably not” get vaccinated if offered today).
Earliest date available: 2021-05-16
V16

#### Outreach and Image

Indicator Description Survey Item
pct_vaccine_likely_friends (formerly pct_trust_fam) Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who would be more likely to get a COVID-19 vaccine if it were recommended to them by friends and family, among respondents who have not yet been vaccinated.
Earliest date available: 2021-01-01
V4
pct_vaccine_likely_who (formerly pct_trust_who) Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who would be more likely to get a COVID-19 vaccine if it were recommended to them by the World Health Organization, among respondents who have not yet been vaccinated.
Earliest date available: 2021-01-01
V4
pct_vaccine_likely_govt_health (formerly pct_trust_govt) Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who would be more likely to get a COVID-19 vaccine if it were recommended to them by government health officials, among respondents who have not yet been vaccinated.
Earliest date available: 2021-01-01
V4
pct_vaccine_likely_politicians (formerly pct_trust_politicians) Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who would be more likely to get a COVID-19 vaccine if it were recommended to them by politicians, among respondents who have not yet been vaccinated.
Earliest date available: 2021-01-01
V4
pct_vaccine_likely_doctors Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who would be more likely to get a COVID-19 vaccine if it were recommended to them by doctors and other health professionals they go to for medical care, among respondents who have not yet been vaccinated. This item was shown to respondents starting in Wave 8.
Earliest date available: 2021-02-08
V4
pct_vaccine_likely_local_health (formerly pct_trust_healthcare) Discontinued as of Wave 8, Feb 8, 2021 Estimated percentage of respondents who would be more likely to get a COVID-19 vaccine if it were recommended to them by local health workers, among respondents who have not yet been vaccinated.
Earliest date available: 2021-01-01
V4

#### Reasons for Vaccine Hesitancy

The set of “barrier” items correspond to the set of “hesitancy_reasons” items in the API.

Indicator Description Survey Item
pct_worried_vaccine_sideeffects (formerly pct_concerned_sideeffects) Estimated percentage of respondents who are very or moderately concerned that they would “experience a side effect from a COVID-19 vaccination.” Note: Until March 2, 2021, all respondents answered this question, including those who had already received one or more doses of a COVID-19 vaccine; beginning on that date, only respondents who said they have not received a COVID vaccine are asked this question.
Earliest date available: 2021-01-01
V9
pct_barrier_sideeffects Estimated percentage of respondents who say they are hesitant to get vaccinated because they are worried about side effects, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered.
Earliest date available: 2021-02-08
V5abc
pct_barrier_allergic Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who say they are hesitant to get vaccinated because they are worried about having an allergic reaction, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered.
Earliest date available: 2021-02-08
V5abc
pct_barrier_ineffective Estimated percentage of respondents who say they are hesitant to get vaccinated because they don’t know if a COVID-19 vaccine will work, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered.
Earliest date available: 2021-02-08
V5abc
pct_barrier_dontneed Estimated percentage of respondents who say they are hesitant to get vaccinated because they don’t believe they need a COVID-19 vaccine, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered.
Earliest date available: 2021-02-08
V5abc
pct_barrier_dislike_vaccines Estimated percentage of respondents who say they are hesitant to get vaccinated because they dislike vaccines, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered.
Earliest date available: 2021-02-08
V5abc
pct_barrier_wait_safety Estimated percentage of respondents who say they are hesitant to get vaccinated because they want to wait to see if the COVID-19 vaccines are safe, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered.
Earliest date available: 2021-02-08
V5abc
pct_barrier_low_priority Estimated percentage of respondents who say they are hesitant to get vaccinated because they think other people need it more than they do, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered.
Earliest date available: 2021-02-08
V5abc
pct_barrier_cost Estimated percentage of respondents who say they are hesitant to get vaccinated because they are worried about the cost, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered. This series of items was shown to respondents starting in Wave 8.
Earliest date available: 2021-02-08
V5abc
pct_barrier_distrust_govt Estimated percentage of respondents who say they are hesitant to get vaccinated because they don’t trust the government, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered.
Earliest date available: 2021-02-08
V5abc
pct_barrier_religious Estimated percentage of respondents who say they are hesitant to get vaccinated because it is against their religious beliefs, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered.
Earliest date available: 2021-02-08
V5abc
pct_barrier_other Estimated percentage of respondents who say they are hesitant to get vaccinated for another reason, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered.
Earliest date available: 2021-02-08
V5abc
pct_barrier_not_recommended Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who say they are hesitant to get vaccinated because their doctor did not recommend it, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered.
Earliest date available: 2021-02-08
V5abc
pct_barrier_distrust_vaccines Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who say they are hesitant to get vaccinated because they don’t trust COVID-19 vaccines, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered.
Earliest date available: 2021-02-08
V5abc
pct_barrier_health_condition Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who say they are hesitant to get vaccinated because they have a health condition that may impact the safety of a COVID-19 vaccine, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered.
Earliest date available: 2021-02-08
V5abc
pct_barrier_pregnant Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who say they are hesitant to get vaccinated because they are currently, or are planning to be, pregnant or breastfeeding, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered.
Earliest date available: 2021-02-08
V5abc

#### Reasons for Believing Vaccine is Unnecessary

Respondents who indicate that “I don’t believe I need a COVID-19 vaccine” (in items V5a, V5b, V5c, or, prior to Wave 11, V5d) are asked a follow-up item asking why they don’t believe they need the vaccine. These signals summarize the reasons selected. Respondents who do not select any reason (including “Other”) are treated as missing.

This item was shown to respondents starting in Wave 8.

Indicator Description Survey Item
pct_dontneed_reason_had_covid Estimated percentage of respondents who say they don’t need to get a COVID-19 vaccine because they already had the illness, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered and provided at least one reason for why they believe a COVID-19 vaccine is unnecessary.
Earliest date available: 2021-02-08
V6 and V5bc
pct_dontneed_reason_dont_spend_time Estimated percentage of respondents who say they don’t need to get a COVID-19 vaccine because they don’t spend time with high-risk people, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered and provided at least one reason for why they believe a COVID-19 vaccine is unnecessary.
Earliest date available: 2021-02-08
V6 and V5bc
pct_dontneed_reason_not_high_risk Estimated percentage of respondents who say they don’t need to get a COVID-19 vaccine because they are not in a high-risk group, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered and provided at least one reason for why they believe a COVID-19 vaccine is unnecessary.
Earliest date available: 2021-02-08
V6 and V5bc
pct_dontneed_reason_precautions Estimated percentage of respondents who say they don’t need to get a COVID-19 vaccine because they will use other precautions, such as a mask, instead, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered and provided at least one reason for why they believe a COVID-19 vaccine is unnecessary.
Earliest date available: 2021-02-08
V6 and V5bc
pct_dontneed_reason_not_serious Estimated percentage of respondents who say they don’t need to get a COVID-19 vaccine because they don’t believe COVID-19 is a serious illness, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered and provided at least one reason for why they believe a COVID-19 vaccine is unnecessary.
Earliest date available: 2021-02-08
V6 and V5bc
pct_dontneed_reason_not_beneficial Estimated percentage of respondents who say they don’t need to get a COVID-19 vaccine because they don’t think vaccines are beneficial, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered and provided at least one reason for why they believe a COVID-19 vaccine is unnecessary.
Earliest date available: 2021-02-08
V6 and V5bc
pct_dontneed_reason_other Estimated percentage of respondents who say they don’t need to get a COVID-19 vaccine for another reason, among respondents who answered “Yes, probably”, “No, probably not”, or “No, definitely not” when asked if they would get vaccinated if offered and provided at least one reason for why they believe a COVID-19 vaccine is unnecessary.
Earliest date available: 2021-02-08
V6 and V5bc

#### Barriers to Accessing Vaccination

Vaccine barrier items are reported in three ways: among those who have already been vaccinated or have tried to get vaccinated, among only those who have already been vaccinated (accompanied by the suffix _has), and among only those who have tried to get vaccinated (accompanied by the suffix _tried). For example, the combined metric pct_vaccine_barrier_eligible has pct_vaccine_barrier_eligible_has and pct_vaccine_barrier_eligible_tried variants that report the component groups separately.

Indicator Description Survey Item
pct_vaccine_barrier_eligible Estimated percentage of respondents who report eligibility requirements as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated.
Earliest date available: 2021-05-16
V15a and V15b
pct_vaccine_barrier_no_appointments Estimated percentage of respondents who report lack of vaccine or vaccine appointments as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated.
Earliest date available: 2021-05-16
V15a and V15b
pct_vaccine_barrier_appointment_time Estimated percentage of respondents who report available appointment times as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated.
Earliest date available: 2021-05-16
V15a and V15b
pct_vaccine_barrier_technical_difficulties Estimated percentage of respondents who report technical difficulties with the website or phone line as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated.
Earliest date available: 2021-05-16
V15a and V15b
pct_vaccine_barrier_document Estimated percentage of respondents who report inability to provide required documents as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated.
Earliest date available: 2021-05-16
V15a and V15b
pct_vaccine_barrier_technology_access Estimated percentage of respondents who report limited access to internet or phone as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated.
Earliest date available: 2021-05-16
V15a and V15b
pct_vaccine_barrier_travel Estimated percentage of respondents who report difficulty traveling to vaccination sites as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated.
Earliest date available: 2021-05-16
V15a and V15b
pct_vaccine_barrier_language Estimated percentage of respondents who report information not being available in their native language as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated.
Earliest date available: 2021-05-16
V15a and V15b
pct_vaccine_barrier_childcare Estimated percentage of respondents who report lack of childcare as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated.
Earliest date available: 2021-05-16
V15a and V15b
pct_vaccine_barrier_time Estimated percentage of respondents who report difficulty getting time away from work or school as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated.
Earliest date available: 2021-05-16
V15a and V15b
pct_vaccine_barrier_type Estimated percentage of respondents who report available vaccine type as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated.
Earliest date available: 2021-05-16
V15a and V15b
pct_vaccine_barrier_none Estimated percentage of respondents who report experiencing none of the listed barriers to gettint the vaccing, among those who have already been vaccinated or have tried to get vaccinated.
Earliest date available: 2021-05-16
V15a and V15b

### Mental Health Indicators

Indicator Description Survey Item
pct_finance Estimated percentage of respondents who report being very or somewhat worried about their “household’s finances for the next month”
Earliest date available: 2021-05-16
C15
pct_anxious_7d Estimated percentage of respondents who reported feeling “nervous, anxious, or on edge” for most or all of the past 7 days. This item was shown to respondents starting in Wave 10.
Earliest date available: 2021-05-16
C8a or C18a
pct_depressed_7d Estimated percentage of respondents who reported feeling depressed for most or all of the past 7 days. This item was shown to respondents starting in Wave 10.
Earliest date available: 2021-05-16
C8a or C18b
pct_worried_catch_covid Estimated percentage of respondents worrying either a great deal or a moderate amount about catching COVID-19.
Earliest date available: 2021-05-16
G1
pct_felt_isolated_7d Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who reported feeling “isolated from others” for most or all of the past 7 days. This item was shown to respondents starting in Wave 10. C8a
pct_anxious_5d Discontinued as of Wave 10, Mar 2, 2021 Estimated percentage of respondents who reported feeling “nervous, anxious, or on edge” for most or all of the past 5 days C8
pct_depressed_5d Discontinued as of Wave 10, Mar 2, 2021 Estimated percentage of respondents who reported feeling depressed for most or all of the past 5 days C8
pct_felt_isolated_5d Discontinued as of Wave 10, Mar 2, 2021 Estimated percentage of respondents who reported feeling “isolated from others” for most or all of the past 5 days C8
pct_worried_become_ill Discontinued as of Wave 11, May 19, 2021 Estimated percentage of respondents who reported feeling very or somewhat worried that “you or someone in your immediate family might become seriously ill from COVID-19” C9

### Beliefs

Indicator Description Survey Item
pct_belief_masking_effective Estimated percentage of respondents who believe that wearing a face mask is either very or moderately effective for preventing the spread of COVID-19.
Earliest date available: 2021-05-16
G3
pct_belief_distancing_effective Estimated percentage of respondents who believe that social distancing is either very or moderately effective for preventing the spread of COVID-19.
Earliest date available: 2021-05-16
G2
pct_belief_vaccinated_mask_unnecessary Estimated percentage of people who believe that the statement “Getting the COVID-19 vaccine means that you can stop wearing a mask around people outside your household” is definitely or probably true.
Earliest date available: 2021-05-16
I1
pct_belief_children_immune Estimated pPercentage of people who believe that the statement “Children cannot get COVID-19” is definitely or probably true.
Earliest date available: 2021-05-16
I2
pct_belief_created_small_group Estimated percentage of people who believe that the statement “COVID-19 was deliberately created by a small group of people who secretly manipulate world events” is definitely or probably true.
Earliest date available: 2021-05-16
I3
pct_belief_govt_exploitation Estimated percentage of people who indicate that the statement “The COVID-19 pandemic is being exploited by the government to control people” is definitely or probably true.
Earliest date available: 2021-05-16
I4

### Medical Care Experiences Indicators

Indicator Description Survey Item
pct_delayed_care_cost Estimated percentage of respondents who have ever delayed or not sought medical care in the past year because of cost.
Earliest date available: 2021-05-16
K1
pct_race_treated_fairly_healthcare Estimated percentage of respondents who somewhat or strongly agree that people of their race are treated fairly in a healthcare setting.
Earliest date available: 2021-05-16
K2

### News and Information Indicators

#### Sources of News

Indicator Description Survey Item
pct_received_news_local_health Estimated percentage of respondents who received news about COVID-19 from local health workers, clinics, and community organizations in the past 7 days.
Earliest date available: 2021-05-16
I5
pct_received_news_experts Estimated percentage of respondents who received news about COVID-19 from scientists and other health experts in the past 7 days.
Earliest date available: 2021-05-16
I5
pct_received_news_cdc Estimated percentage of respondents who received news about COVID-19 from the CDC in the past 7 days.
Earliest date available: 2021-05-16
I5
pct_received_news_govt_health Estimated percentage of respondents who received news about COVID-19 from government health authorities or officials in the past 7 days.
Earliest date available: 2021-05-16
I5
pct_received_news_politicians Estimated percentage of respondents who received news about COVID-19 from politicians in the past 7 days.
Earliest date available: 2021-05-16
I5
pct_received_news_journalists Estimated percentage of respondents who received news about COVID-19 from journalists in the past 7 days.
Earliest date available: 2021-05-16
I5
pct_received_news_friends Estimated percentage of respondents who received news about COVID-19 from friends and family in the past 7 days.
Earliest date available: 2021-05-16
I5
pct_received_news_religious Estimated percentage of respondents who received news about COVID-19 from religious leaders in the past 7 days.
Earliest date available: 2021-05-16
I5
pct_received_news_none Estimated percentage of respondents who in the past 7 days received news about COVID-19 from none of the listed sources.
Earliest date available: 2021-05-16
I5

#### Trusted Sources of Information

Indicator Description Survey Item
pct_trust_covid_info_doctors Estimated percentage of respondents who trust doctors and other health professionals they go to for medical care to provide accurate news and information about COVID-19.
Earliest date available: 2021-05-16
I6
pct_trust_covid_info_experts Estimated percentage of respondents who trust scientists and other health experts to provide accurate news and information about COVID-19.
Earliest date available: 2021-05-16
I6
pct_trust_covid_info_cdc Estimated percentage of respondents who trust the Centers for Disease Control (CDC) to provide accurate news and information about COVID-19.
Earliest date available: 2021-05-16
I6
pct_trust_covid_info_govt_health Estimated percentage of respondents who trust government health officials to provide accurate news and information about COVID-19.
Earliest date available: 2021-05-16
I6
pct_trust_covid_info_politicians Estimated percentage of respondents who trust politicians to provide accurate news and information about COVID-19.
Earliest date available: 2021-05-16
I6
pct_trust_covid_info_journalists Estimated percentage of respondents who trust journalists to provide accurate news and information about COVID-19.
Earliest date available: 2021-05-16
I6
pct_trust_covid_info_friends Estimated percentage of respondents who trust friends and family to provide accurate news and information about COVID-19.
Earliest date available: 2021-05-16
I6
pct_trust_covid_info_religious Estimated percentage of respondents who trust religious leaders to provide accurate news and information about COVID-19.
Earliest date available: 2021-05-16
I6

#### Desired Information

Indicator Description Survey Item
pct_want_info_covid_treatment Estimated percentage of people who want more information about the treatment of COVID-19.
Earliest date available: 2021-05-16
I7
pct_want_info_vaccine_access Estimated percentage of people who want more information about how to get a COVID-19 vaccine.
Earliest date available: 2021-05-16
I7
pct_want_info_vaccine_types Estimated percentage of people who want more information about different types of COVID-19 vaccines.
Earliest date available: 2021-05-16
I7
pct_want_info_covid_variants Estimated percentage of people who want more information about COVID-19 variants and mutations.
Earliest date available: 2021-05-16
I7
pct_want_info_children_education Estimated percentage of people who want more information about how to support their children’s education.
Earliest date available: 2021-05-16
I7
pct_want_info_mental_health Estimated percentage of people who want more information about how to maintain their mental health.
Earliest date available: 2021-05-16
I7
pct_want_info_relationships Estimated percentage of people who want more information about how to maintain their social relationships despite physical distancing.
Earliest date available: 2021-05-16
I7
pct_want_info_employment Estimated percentage of people who want more information about employment and other economic and financial issues.
Earliest date available: 2021-05-16
I7
pct_want_info_none Estimated percentage of people who want more information about none of the listed topics.
Earliest date available: 2021-05-16
I7