Table 3 Characteristics of included abstracts by individual journals

Title

25.0

48.9

0.010

33.3

55.7

0.015

30.3

61.8

0.010

54.6

62.9

0.53

Authors (for conference abstracts)

–

–

–

–

–

–

–

–

–

–

–

–

Trial design

28.1

20.0

0.33

18.2

19.2

0.89

33.3

17.7

0.140

4.6

5.7

0.85

 Participants

10.9

17.8

0.31

68.2

92.3

0.001

66.7

29.4

0.002

9.1

20.0

0.27

 Setting^a

10.9

17.8

0.31

68.2

92.3

0.001

66.7

29.4

0.002

9.1

20.0

0.27

 Interventions

92.2

77.8

0.032

92.4

90.4

0.69

93.9

67.7

0.007

90.9

88.6

0.78

 Objective

95.3

97.8

0.50

89.4

96.2

0.170

97.0

94.1

0.57

95.5

91.4

0.56

 Outcome

40.6

60.0

0.046

31.8

46.2

0.111

18.2

50.0

0.006

22.7

40.0

0.18

 Randomization

0

0

–

0

3.9

0.108

0

0

–

9.1

2.9

0.31

 Blinding (masking)

0

2.2

0.23

6.1

9.6

0.47

6.1

0

0.145

0

2.7

0.42

 Numbers randomized

35.9

33.3

0.78

39.4

48.1

0.35

39.4

29.4

0.39

68.2

34.2

0.013

 Recruitment

6.3

8.9

0.60

1.5

0

0.37

0

8.8

0.081

0

0

–

 Numbers analyzed

4.7

6.7

0.66

4.6

7.7

0.47

3.0

11.8

0.174

4.6

8.6

0.56

 Outcome

7.8

22.2

0.032

3.0

19.2

0.004

3.0

11.8

0.174

4.6

11.4

0.37

 Effect size^a

7.8

31.1

0.002

3.0

21.2

0.002

3.0

14.7

0.094

4.6

11.4

0.37

 Harms

20.3

24.4

0.61

12.1

30.8

0.012

0

29.4

0.001

4.6

25.7

0.041

 Conclusion

98.4

95.6

0.37

98.5

100

0.37

90.9

94.1

0.62

100

97.1

0.42

 Trial registration

18.8

62.2

<0.001

0

15.4

0.001

0

17.7

0.011

59.1

80.0

0.087

 Funding

0

48.9

<0.001

0

0

–

9.1

0

0.072

0

2.9

0.42