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Table 2 The results of meta-analysis with five genetic models

From: Genetic association between TNF-α −857 C/T polymorphism and ankylosing spondylitis susceptibility: evidence from a meta-analysis

Genetic model

Subgroups

No. of studies

Heterogeneity

Test of association

Model

P value

I 2 (%)

OR

95% CI

P value

T versus C

Overall

10

R

<0.001

88.0

1.86

1.19–2.92

0.007

 

HWE (yes)

9

R

<0.001

87.1

2.07

1.32–3.26

0.002

 

Asian

9

R

<0.001

87.1

2.07

1.32–3.26

0.002

 

Caucasian

1

R

0.07

0.40–1.22

0.21

TT versus CC

Overall

10

R

<0.001

71.9

2.41

0.96–6.06

0.06

 

HWE (yes)

9

R

0.004

64.7

2.97

1.14–7.75

0.03

 

Asian

9

R

0.004

64.7

2.97

1.14–7.75

0.03

 

Caucasian

1

R

0.69

0.30–1.56

0.37

CT versus CC

Overall

10

R

<0.001

84.0

2.51

1.49–4.23

0.001

 

HWE (yes)

9

R

<0.001

85.1

2.72

1.59–4.66

<0.001

 

Asian

9

R

<0.001

85.1

2.72

1.59–4.66

<0.001

 

Caucasian

1

R

0.73

0.16–3.2

0.68

TT + CT versus CC

Overall

10

R

<0.001

87.9

2.46

1.40–4.30

0.002

 

HWE (yes)

9

R

<0.001

87.5

2.80

1.59–4.96

<0.001

 

Asian

9

R

<0.001

87.5

2.80

1.59–4.96

<0.001

 

Caucasian

1

R

0.69

0.32–1.49

0.35

TT versus CC + CT

Overall

10

R

0.005

62.1

1.54

0.71–3.35

0.28

 

HWE (yes)

9

R

0.011

59.8

1.77

0.74–4.25

0.20

 

Asian

9

R

0.011

59.8

1.77

0.74–4.25

0.20

 

Caucasian

1

R

0.71

0.31–1.59

0.40

  1. HWE Hardy–Weinberg equilibrium, R random-effect model, OR odds ratio, CI confidence interval