Reporting of ethical approval articles on child health in five American journals in 1999. Values are numbers (percentages)


JAMA
New England Journal of Medicine
Pediatrics
Journal of Pediatrics
Archives of Pediatrics and Adolescent Medicine
All journals
Studies With approval Studies With approval Studies With approval Studies With approval Studies With approval Total With approval

Randomised controlled trial 4 (11) 3 (75) 9 (24) 9 (100) 32 (18) 31 (97) 30 (19) 29 (97) 11 (8) 11 (100) 86 (15) 83 (97)
Prospective cohort 11 (29) 9 (82) 13 (35) 10 (77) 95 (53) 71 (75) 75 (47) 52 (69) 91 (63) 58 (64) 285 (51) 200 (70)
Retrospective cohort 6 (16) 4 (67) 2 (5) 1 (50) 8 (4) 3 (38) 21 (13) 7 (33) 17 (12) 5 (29) 54 (10) 20 (37)
Case series 4 (11) 2 (50) 3 (8) 1 (33) 22 (12) 9 (41) 29 (18) 5 (17) 9 (6) 4 (44) 67 (12) 21 (31)
Case-control study 2 (5) 1 (50) 2 (5) 1 (50) 3 (2) 3 (100) 1 (1) 0 5 (3) 3 (60) 13 (2) 8 (62)
Large dataset analyses 11 (29) 1 (9) 8 (22) 2 (25) 20 (11) 1 (5) 5 (3) 1 (20) 12 (8) 0 56 (10) 5 (9)
Total 38 20 (53) 37 24 (65) 180 118 (66) 161 97 (60) 145 81 (56) 561 340 (61)