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Table 4 Respondents’ reasons for sharing clinical trial data*

From: Predictors of clinical trial data sharing: exploratory analysis of a cross-sectional survey

  Reasons for sharing clinical trial data*
  Respondents Administrative requirements (%) P value Promote open science (%) P value Academic benefits or recognition (%) P value Other reasons (%)
Overall 317 55 (17)   248 (78)   133 (42)   56 (18)
Trialist academic productivity (number of research articles published in past three years)    0.64   0.26   0.94  
     1 to 10 articles 71 10 (14)   58 (82)   31 (44)   8 (11)
     11 to 25 articles 117 20 (17) 95 (81) 49 (42) 21 (18)
     >25 articles 129 25 (19) 95 (74) 53 (41) 27 (21)
Trialist geographic location    0.02   0.46   <0.0001  
     United States or Canada 167 32 (19)   135 (81)   52 (31)   35 (21)
     Western Europe 113 12 (11) 86 (76) 65 (58) 18 (16)
     Other 37 11 (30) 27 (73) 16 (43) 3 (8)
Trial funding source    0.62   0.26   0.28  
     Government 120 24 (20)   99 (83)   45 (38)   17 (14)
     Industry or mixed funding 152 24 (16) 113 (74) 65 (43) 28 (18)
     Other 45 7 (16) 36 (80) 23 (51) 11 (24)
Trial size    0.36   0.82   0.48  
     ≤239 subjects 80 18 (23)   64 (80)   33 (41)   14 (18)
     240 to 2,016 subjects 158 24 (15) 124 (78) 71 (45) 22 (14)
     ≥2,017 subjects 19 13 (16) 60 (76) 29 (37) 20 (25)
Journal in which the trial was published    0.27**   0.55   0.46  
     NEJM 113 17 (15)   87 (77)   46 (41)   22 (19)
     Lancet 70 15 (21) 51 (73) 33 (47) 14 (20)
     JAMA 43 6 (14) 33 (77) 14 (33) 8 (19)
     Annals of Internal Medicine 24 8 (33) 20 (83) 13 (54) 2 (8)
     The BMJ 53 8 (15) 46 (87) 20 (38) 7 (13)
     PLoS Medicine 14 1 (7)   11 (79)   7 (50)   3 (21)
  1. *If respondent had not been asked to share data they were asked to share their hypothetical reasons for sharing. **Fisher exact test. JAMA, Journal of the American Medical Association; NEJM, New England Journal of Medicine.