Comparison | Population | Sample size | Â | No. of studies | Type of model | Test of association | Â | Â | Test of heterogeneity | Â | Â |
---|---|---|---|---|---|---|---|---|---|---|---|
 |  | Case | Control |  |  | OR | 95% CI | P value | Q test | P value | I2 |
T allele versus C allele | Overall | 6620 | 42525 | 10 | Fixed | 1.17 | 1.10-1.26 | <0.01 | 7.22 | 0.61 | 0.0 % |
 | Asian | 1037 | 4310 | 3 | Fixed | 1.07 | 0.92-1.24 | 0.40 | 3.18 | 0.20 | 37.0 % |
 | Caucasian | 5583 | 38215 | 7 | Fixed | 1.20 | 1.12-1.30 | <0.01 | 2.09 | 0.91 | 0.0 % |