Table 2 Characteristics of studies included in the meta-analysis
From: Current evidences on XPC polymorphisms and gastric cancer susceptibility: a meta-analysis
First author (Year) | Country | Ethnicity | Sample size (case/control) | Genotyping methods | Matching criteria | Source of control | GC ascertainment | SNPs | HWE(P value) | Quality scores | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|  |  |  |  |  |  |  |  |  | Lys939Gln | Ala499Val | PAT+/− |  |
Palli 2010 | Italy | Caucasian | 306/547 | TaqMan | Gender | PB | Histo- | PAT+/− | — | — | 0.085 | 7 |
Dong 2008 | China | Asian | 253/612 | PCR-RFLP | Age and gender | PB | Histopatho- | Lys939Gln, Ala499Val, PAT+/− | 0.699 | 0.217 | 0.786 | 8.5 |
Engin 2011 | Turkey | Caucasian | 106/116 | PCR-RFLP | Age and BMI | HB | NR | Lys939Gln | 0.642 | — | — | 4.5 |
Long 2010 | China | Asian | 361/616 | TaqMan | Age, gender, ethnicity, smoking, and drinking | HB | Histopatho- | Lys939Gln, Ala499Val | 0.446 | 0.673 | — | 6 |
Ye 2006 | Sweden | Caucasian | 126/472 | PCR-RFLP | NR | PB | Histo- | Lys939Gln | 0.540 | — | — | 7 |
Li 2010 | China | Asian | 203/210 | PCR-RFLP | Age, gender, smoking, and drinking | HB | Patho- | Lys939Gln, Ala499Val | 0.173 | 0.462 | — | 7.5 |