Objective. To examine response rate information from mailed physician questionnaires reported in published articles. Data Sources/Study Setting. Citations for articles published between 1985 and 1995 were obtained using a key word search of the Medline, PsychLit, and Sociofile databases. Study Design. A 5 percent random sample of relevant citations was selected from each year. Data Collection/Extraction Methods. Citations found to be other than physician surveys were discarded and replaced with the next randomly assigned article. Selected articles were abstracted using a standardized variable list. Principal Findings. The average response rate for mailed physician questionnaires was 61 percent. The average response rate for large sample surveys (> 1,000 observations) was 52 percent. In addition, only 44 percent of the abstracted articles reported a discussion of response bias, and only 54 percent reported any type of follow-up. Conclusions. (1) Response rates have remained somewhat constant over time, and (2) researchers need to document the efforts used to increase response rates to mailed physician questionnaires
Reported response rates to mailed physician questionnaires
Cummings, SM., Savitz, L., & Konrad, TR. (2001). Reported response rates to mailed physician questionnaires. Health Services Research, 35(6), 1347-1355.