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Table 4 Statistics of polled ORs and Heterogeneity for Overall and Sub Group Analyses of COL9A3 trp3 Polymorphism

From: Association of COL9A3 trp3 polymorphism with intervertebral disk degeneration: a meta-analysis

COL9A3 trp3

N

ORs analyses

Heterogeneity Analyses

Model Used for Meta-analysis

polled ORs (95% CI)

P value

χ2

Pheterogeneity

I2 (%)

Overall

11

1.31 (0.78,2.21)

0.309

25.31

0.003

64.40%

Random

sub group analysis by gender

male

7

1.30 (0.77,2.17)

0.322

11.30

0.080

46.90%

Fixed

female

5

1.11 (0.62,2.01)

0.725

1.64

0.802

0.00%

sub group analysis by ethnicity

Asian

3

1.22 (0.52,2.89)

0.645

1.53

0.216

34.70%

Random

Caucasian

3

1.53 (0.55, 4.29)

0.417

10.17

0.006

80.3%

unclear

5

0.96 (0.53, 1.75)

0.907

4.96

0.292

19.3%

  1. Abbreviations: CI confidence interval, ORs odds ratios, N number of studies included in each analysis