Cool virtual conference on Paradata. Join Us! "gathering of methodological and substantive researchers who are interested in modern applications of survey paradata for enhancing methodological and substantive research." isr.umich.edu/news-events/...

Examples of paradata: times of day interviews were conducted, how long the interviews took, how many times there were contacts with each interviewee or attempts to contact the interviewee, the reluctance of the interviewee, and the mode of communication (such as phone, Web, email, or in person).