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Table 1 Characteristics of Eligible Residents

From: Improving Longitudinal Survey Participation Among Internal Medicine Residents: Incorporating Behavioral Economic Techniques and Avoiding Friday or Saturday Invitations

Characteristics Value
Eligible residentsa, no. 6228
Survey invitations emailed, no. 97,142
Overall response rate, % 40.0
Training level, no. (%)
 PGY-1 2528 (41)
 PGY-2 1896 (30)
 PGY-3 1804 (29)
Study arm, no. (%)
 Standard 3211 (52)
 Flexible 3017 (48)
Lottery selected, by $ amount, no. (%)
 $25 1406 (23)
 $100 464 (7.5)
  1. PGY, post-graduate year; United States dollar
  2. aResidents were eligible if they were emailed an invitation to complete a survey during the study period. Residents were emailed an invitation if they were on a list of emails provided by each training program. Residents were excluded if they were dropped from the email list for any of the 16 survey cycles if these individuals indicated they were included erroneously because of an incorrect email or they were no longer a trainee at their respective training program. "Study arm" refer to the two trial arms within the Individualized Comparative Effectiveness of Models Optimizing Patient Safety and Resident Education (iCOMPARE) where training programs and all their residents were randomized to the 2011 Accreditation Council for Graduate Medical Education shift-length policies (“standard”) or were not required to adhere to shift-length limits (“flexible”)