Study | Country | Source of control | Genotyping method | PHWE | Cases/ controls | No. of cases | No. of controls | ||||
---|---|---|---|---|---|---|---|---|---|---|---|
CC | TC | TT | CC | TC | TT | ||||||
Akkiz et al10 | Turkey | HB | PCR-RFLP | 0.16 | 129/129 | 8 | 56 | 65 | 9 | 62 | 58 |
Chang et al11 | Taiwan | PB | PCR-RFLP | <0.001 | 298/298 | 0 | 103 | 195 | 0 | 97 | 201 |
Fan et al12 | China | HB | TaqMan genotyping platform | 0.22 | 780/780 | 36 | 235 | 509 | 25 | 258 | 497 |
HB, hospital-based; PB, population-based; PCR-RFLP, PCR-restriction fragment length polymorphism; PHWE, Hardy–Weinberg equilibrium of controls.