Few U.S. adults say they’ve been diagnosed with coronavirus, but more than a quarter know someone who has
Relatively few Americans say they have tested positive for coronavirus antibodies, but many more believe they may have been infected.
Relatively few Americans say they have tested positive for coronavirus antibodies, but many more believe they may have been infected.
While the growth of online interviewing is a prominent trend in polling, there is variation within that trend in how researchers recruit respondents. This study finds that sourcing affects data quality.