@@ -24,9 +24,13 @@ voluntary. Users age 18 or older are eligible to complete the surveys, and
2424their survey responses are held by CMU and are sharable with other health
2525researchers under a data use agreement. No individual survey responses are
2626shared back to Facebook. See our [ surveys
27- page] ( https://delphi.cmu.edu/covidcast/surveys / ) for more detail about how the
27+ page] ( https://delphi.cmu.edu/covid19/ctis / ) for more detail about how the
2828surveys work and how they are used outside the COVIDcast API.
2929
30+ As of November 2021, the average number of Facebook survey responses we
31+ receive each day is about 40,000, and the total number of survey responses we
32+ have received is over 25 million.
33+
3034We produce several sets of signals based on the survey data, listed and
3135described in the sections below:
3236
@@ -52,7 +56,9 @@ dashboard](https://delphi.cmu.edu/covidcast/survey-results/) at any selected
5256location.
5357
5458Additionally, contingency tables containing demographic breakdowns of survey
55- data are [ also available for download] ( ../../symptom-survey/contingency-tables.md ) .
59+ data are [ available for download] ( ../../symptom-survey/contingency-tables.md ) .
60+ Researchers can [ request access] ( ../../symptom-survey/data-access.md )
61+ to (fully de-identified) individual survey responses for research purposes.
5662
5763## Table of Contents
5864{: .no_toc .text-delta}
@@ -85,12 +91,6 @@ survey, which go into more detail on symptoms, contacts, risk factors, and
8591demographics. These are used for many of our behavior and testing indicators
8692below. The full text of the survey (including all deployed versions) can be
8793found on our [ questions and coding page] ( ../../symptom-survey/coding.md ) .
88- Researchers can [ request access] ( https://dataforgood.facebook.com/dfg/docs/covid-19-trends-and-impact-survey-request-for-data-access )
89- to (fully de-identified) individual survey responses for research purposes.
90-
91- As of early March 2021, the average number of Facebook survey responses we
92- receive each day is about 40,000, and the total number of survey responses we
93- have received is over 17 million.
9494
9595## ILI and CLI Indicators
9696
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