Table 3 Characteristics of respondents vs. non-respondents in the voluntary group (class of 2016): Non-response bias
From: Voluntary vs. compulsory student evaluation of clerkships: effect on validity and potential bias
Characteristics | Internal Medicine | Surgery | Pediatrics | Ob-Gyn | Primary Care | Neurology | Psychiatry | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
R N = 31 | NR N = 18 | R N = 28 | NR N = 21 | R N = 23 | NR N = 26 | R N = 22 | NR N = 27 | R N = 30 | NR N = 19 | R N = 30 | NR N = 19 | R N = 28 | NR N = 21 | |
Female Gender n (%) | 15(48%) | 5(28%) | 13(46%) | 7(33%) | 10(43%) | 10(38%) | 12(55%) | 8(30%) | 16(53%) | 4(21%)a | 13(43%) | 7(37%) | 15(54%) | 5(24%)a |
Age [Mean(SD)] | 25.1(1.0) | 25.1(0.9) | 25.2(1.1) | 24.9(0.8) | 25.1(1.1) | 25.1(0.9) | 25.0(1.1) | 25.2(0.9) | 24.9(1.0) | 25.3(1.0) | 25.2(1.1) | 24.9(0.8) | 25.0(1.0) | 25.2(1.0) |
Aggregate students’ grades [Mean(SD)] | 77.51 (4.49) | 79.34 (3.63) | 79.50 (2.93) | 78.98 (2.20) | 79.26 (4.16) | 79.91 (3.34) | 80.11 (3.79) | 80.78 (3.65) | 77.96 (4.88) | 79.48 (2.85) | 78.26 (4.32) | 79.43 (3.45) | 84.60 (4.03) | 83.14 (2.95) |