期刊
AMERICAN JOURNAL OF EVALUATION
卷 37, 期 3, 页码 425-440出版社
SAGE PUBLICATIONS INC
DOI: 10.1177/1098214016630406
关键词
qualitative methods; focus groups; interviews; cost-effectiveness; cost; time; saturation; thematic analysis
资金
- Patient-Centered Outcomes Research Institute (PCORI) [1IP2PI000395-01]
Evaluators often use qualitative research methods, yet there is little evidence on the comparative cost-effectiveness of the two most commonly employed qualitative methods-in-depth interviews (IDIs) and focus groups (FGs). We performed an inductive thematic analysis of data from 40 IDIs and 40 FGs on the health-seeking behaviors of African American men (N = 350) in Durham, North Carolina. We used a bootstrap simulation to generate 10,000 random samples from each data set and calculated the number of data collection events necessary to reach different levels of thematic saturation. The median number of data collection events required to reach 80% and 90% saturation was 8 and 16, respectively, for IDIs and 3 and 5 for FGs. Interviews took longer but were more cost-effective at both levels. At the median, IDIs cost 20-36% less to reach thematic saturation. Evaluators can consider these empirically based cost-effectiveness data when selecting a qualitative data collection method.
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