Estimates of volunteering in the United States vary greatly from survey to survey and do not show the decline over time … survey participation, in particular the propensity of people who do volunteer work to respond to surveys at higher rates than … data from the American Time Use Survey (ATUS) -- the sample for which is drawn from Current Population Survey (CPS …

education) measured in the survey or on spatial estimates (most often for zip codes) from the American Community Survey. We …