Table 4.
Meta-analysis of the MTRR rs1801394 polymorphism and glioma risk
| Comparison | Population | N | Test of association | Mode | Test of heterogeneity | ||||
|---|---|---|---|---|---|---|---|---|---|
| OR | 95%CI | P | χ2 | P | I2 | ||||
| G vs. A | Overall | 6 | 0.90 | 0.72–1.12 | 0.353 | Random | 15.24 | 0.009 | 67.2 |
| Asian | 1 | 0.51 | 0.33–0.79 | 0.002 | – | – | – | – | |
| Caucasian | 5 | 1.00 | 0.85–1.17 | 0.996 | Fixed | 6.20 | 0.185 | 35.5 | |
| GG vs. AA | Overall | 6 | 0.83 | 0.50–1.35 | 0.445 | Random | 14.89 | 0.011 | 66.4 |
| Asian | 1 | 0.08 | 0.01–0.66 | 0.019 | – | – | – | – | |
| Caucasian | 5 | 0.95 | 0.62–1.44 | 0.802 | Random | 9.30 | 0.054 | 57.0 | |
| GA vs. AA | Overall | 6 | 0.95 | 0.76–1.19 | 0.660 | Fixed | 7.08 | 0.215 | 29.3 |
| Asian | 1 | 0.50 | 0.29–0.87 | 0.015 | – | – | – | – | |
| Caucasian | 5 | 1.04 | 0.86–1.27 | 0.669 | Fixed | 1.12 | 0.891 | 0 | |
| GG vs. GA/AA | Overall | 6 | 0.58 | 0.32–1.06 | 0.075 | Random | 28.01 | 0 | 82.1 |
| Asian | 1 | 0.11 | 0.01–1.18 | 0.041 | – | – | – | – | |
| Caucasian | 5 | 0.64 | 0.35–1.18 | 0.156 | Random | 25.58 | 0 | 84.4 | |
| GG/GA vs. AA | Overall | 6 | 1.05 | 0.58–1.91 | 0.865 | Random | 55.35 | 0 | 91.0 |
| Asian | 1 | 0.45 | 0.26–0.77 | 0.004 | – | – | – | – | |
| Caucasian | 5 | 1.24 | 0.69–2.23 | 0.464 | Random | 38.21 | 0 | 89.5 | |
OR odds ratio, CI confidence interval