Journal
HEALTH SERVICES RESEARCH
Volume 46, Issue 1, Pages 232-242Publisher
WILEY-BLACKWELL
DOI: 10.1111/j.1475-6773.2010.01181.x
Keywords
Physicians; surveys; response rate; incentives
Funding
- Mayo Clinic Department of Medicine
- National Center for Research Resources (NCRR) [1 KL2 RR024151]
- National Institutes of Health (NIH)
- NIH Roadmap for Medical Research
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Objective To study the effects of payment timing, form of payment, and requiring a social security number (SSN) on survey response rates. Data Source Third-wave mailing of a U.S. physician survey. Study Design Nonrespondents were randomized to receive immediate U.S.$25 cash, immediate U.S.$25 check, promised U.S.$25 check, or promised U.S.$25 check requiring an SSN. Data Collection Methods Paper survey responses were double entered into statistical software. Principal Findings Response rates differed significantly between remuneration groups (chi(3)2=80.1, p <.0001), with the highest rate in the immediate cash group (34 percent), then immediate check (20 percent), promised check (10 percent), and promised check with SSN (8 percent). Conclusions Immediate monetary incentives yield higher response rates than promised in this population of nonresponding physicians. Promised incentives yield similarly low response rates regardless of whether an SSN is requested.
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