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Table 5 Percentage bias (%) for the log OR under the alternative hypothesis

From: Performance of several types of beta-binomial models in comparison to standard approaches for meta-analyses with very few studies

Number of studies

BBST

BBCB1

BBCB2

GLFR

HKSJ

DSL

Median

Median

Median

Median

Median

Median

Q1

Q1

Q1

Q1

Q1

Q1

Q3

Q3

Q3

Q3

Q3

Q3

2

−5.11

−5.19

−36.47

−6.08

−11.18

−11.18

− 123.48

− 121.31

−108.22

− 134.08

−129.21

−129.21

129.70

120.92

71.37

131.63

95.25

95.25

3

−5.15

−3.16

−35.18

−6.79

−14.07

−13.90

−109.29

− 104.89

−100.79

− 120.90

− 113.60

−113.90

88.72

91.03

53.83

90.55

67.96

66.87

4

−4.71

−1.71

−32.30

−5.23

−12.62

−12.57

−88.62

−82.00

−99.91

−96.81

−95.54

−96.22

77.02

82.45

47.71

78.32

57.25

56.93

5

−5.07

−1.44

−31.51

− 5.24

−12.35

−12.74

−81.65

−72.16

−91.35

−91.15

−89.98

−90.59

65.71

74.12

38.30

66.97

47.04

45.97

10

−5.11

−0.26

−28.08

−5.71

−12.83

−12.84

−55.87

−47.14

−71.48

−62.81

−66.42

−66.33

40.20

48.89

20.74

41.06

27.47

27.21

  1. Q1: 1st quartile; Q3: 3rd quartile