The effects of cash and lottery incentives on mailed surveys to physicians: a randomized trial.

@article{Leung2002TheEO,
  title={The effects of cash and lottery incentives on mailed surveys to physicians: a randomized trial.},
  author={Gabriel M. Leung and Lai Ming Ho and Moon Fai Chan and Janice M M Johnston and Fung Kam Wong},
  journal={Journal of clinical epidemiology},
  year={2002},
  volume={55 8},
  pages={801-7}
}
Low response rates, especially among physicians, are a common problem in mailed survey research. We conducted a randomized trial to examine the effects of cash and lottery incentives on response rates. A total of 4,850 subjects were randomized to one of three interventions accompanying a mailed survey-no incentive (n = 1,700), cash payment [three levels of Hong Kong dollars (HKD) $10, $20, and $40; N = 50 in each subgroup], or entry into a lottery (three levels of HKD$1,000, $2,000, and $4,000… CONTINUE READING

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