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Table 4 Correspondence between outcomes in publications and ClinicalTrials.gov, based on Impact Factor

From: Transparency in ovarian cancer clinical trial results: ClinicalTrials.gov versus PubMed, Embase and Google scholar

Outcome correspondence based on Impact Factor

Impact factor ≥ 10 (18a)

Impact factor < 10 (75a)

Total (93)

 

N

%

N

%

N

%

Primary Outcome

 Corresponded

19

73.1

62

79.5

81

77.9

 Not corresponded

2

7.7

11

14.1

13

12.5

 Not declared in ClinicalTrials.gov

5

19.2

5

6.4

10

9.6

Secondary Outcome

 Corresponded

11

57.9

36

54.6

47

55.3

 Not corresponded

5

26.3

16

24.2

21

24.7

 Not declared in ClinicalTrials.gov

3

15.8

14

21.2

17

20.0

  1. aNumber of journals with IF less than 10 or more according to each subgroup. The same journal could have published several articles