Kiel Working Papers, Kiel Institute for World Economics
No 1779:
Guidelines for the Use of Household Interview Duration Analysis in CAPI Survey Management
Tobias Stoehr Marcus Böhme
Abstract: This paper provides evidence based guidance for practical
survey work, namely choosing interviewers and their workload. Analyzing a
survey of 3568 households obtained through computer assisted personal
interviews (CAPI) we find that interviewers learn considerably while the
survey progresses. Time requirements for field work increase concavely with
sample size which allows larger samples to be realized with a given budget
than would be expected in planning such projects with simplistic cost
estimates. We find a decrease of interview duration of almost 50 percent
which translates into a significant increase of the average hourly wage the
interviewers receive. These learning effects cease after around 20
interviews. Based on our results we recommend targeting interviewer
training by age and technology-affinity of interviewers for CAPI surveys
Keywords: household surveys, CAPI, learning curves, interview duration, survey planning; (follow links to similar papers)
JEL-Codes: C81; (follow links to similar papers)
11 pages, July 2012
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