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Getting physicians to respond: the impact of incentive type and timing on physician survey response rates
Katherine M James1, Jeanette Y Ziegenfuss, Jon C Tilburt
1Mayo Clinic, 200 1st Street SW, Rochester, MN 55905, USA. james.katherine@mayo.edu
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 (χ(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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