Effects of Follow-up Procedures on Survey Results
Keyword(s):
The Depression Adjective Check List was used as part of an initial interview and as a follow-up interview for measuring changes in depressed mood over time in a community survey. Four procedures were utilized in collecting the follow-up data, (1) leaving the questionnaire with the respondent, (2) mailing the questionnaire, (3) telephone interview, and (4) personal interview. Comparisons of the four procedures showed the telephone interview yielded significantly lower scores on depression than the other procedures. The results indicate potential problems from the use of the telephone interview. Possible confounding factors are discussed.