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Table 1 Summary of characteristics of studies

From: Using incentives to recruit physicians into behavioral trials: lessons learned from four studies

Study

Year

Description of study

Method of recruitment

Required task

Payment

Response and retention rate

1

2010

Development of a vignette-based instrument to measure physician performance

In person at a national meeting

Complete vignette-based instrument online at their convenience (1 h)

$100 gift card redeemable at ATM or in stores provided on enrollment and activated on completion of task

71% response rate; 62% completion rate

2

2011

Validation of a vignette-based instrument to measure physician performance: a) measurement of retest reliability, b) known groups validity, and c) external validity

a. Re-test reliability: email to participants of Study 1

Complete vignette-based instrument online at their convenience (1 h)

$100 Amazon gift card provided by email on completion of task

a. Re-test reliability: completion rate 64%

 

b. Known groups validity: email to personal contacts with snowball recruiting

b. Known groups validity: completion rate 88%

 

c. External validity: email to distribution list of healthcare organization in western Pennsylvania

c. External validity: completion rate 56%

3

2013

Development and validation of a virtual simulation to study physician decision making

In person at a national meeting

Complete virtual simulation online at their convenience (1 h)

$100 gift card redeemable at ATM or in stores provided on enrollment and activated on completion of task

79% response rate; 68% completion rate

4

2016

Randomized trial to test the efficacy of a video game intervention

In person at a national meeting

Complete intervention and then virtual simulation (minimum time-2 h)

Provided with iPad mini (approximate value $260) at the time of enrollment that they kept as their honorarium

88% response rate; 80% completion rate