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Table 2 Number of publications and crude publication rates by research type

From: Publication bias in gastroenterological research – a retrospective cohort study based on abstracts submitted to a scientific meeting

 

CCT N (%)

OCR N (%)

BSS N (%)

total N (%)

total in analysis

326

336

174

836

total published

170 (52)

140 (42)

82 (47)

392 (47)

abstract acceptance

    

   accepted

128 (56)*

107(50)*

59 (58)*

292 (54)*

   rejected

42 (42)

33 (27)

23 (32)

98 (34)

country group

    

   USA/Canada

43 (49)

57 (45)

48 (51)

147 (48)

   N/W Europe/Australia

78 (57)

43 (40)

14 (41)

136(48)

   S/E Europe/Mediterranean.

22 (42)

19(43)

6(67)

45 (44)

   other

27 (56)

21 (37)

14 (39)

62 (43)

multi-center status

    

   1–3 centers

134(48)*

n/a

n/a

n/a

   > 3 centers

36 (78)

   

sample size

    

   < median

72 (50)

69 (40)

8(44)

142 (43)

   > median

98 (54)

68 (42)

12 (41)

181 (48)

statistical significance

    

   positive

84 (60)*

64 (43)

32 (49)

177(50)

   negative

47 (48)

17(42)

5(71)

69 (47)

   equivocal

39 (45)

59 (40)

45 (44)

144 (43)

quality score

    

   <0.63

103 (47)*

88 (42)

54 (49)

240 (45)

   >0.63

67 (63)

52 (41)

28 (44)

150(50)

  1. * p < 0.05 for differences in publication rates between categories. A quality score > 0.63 equals good abstract quality