Brand new go after-up surveys (2001–2004) got a mean lifetime of twenty minutes to accomplish

Brand new go after-up surveys (2001–2004) got a mean lifetime of twenty minutes to accomplish Interviews was in fact presented over the telephone (CATI, converso) from the coached interviewers. To make sure privacy, contact information are immediately deleted from the data files where answers was indeed submitted. Interviews was designed to file every transform for […]