First author (year) | Country | Ethnicity | Sample size (case/control) | Genotyping methods | CRC confirmation | Source of control | Matching criteria | Quality scores | HWE(P value) |
---|---|---|---|---|---|---|---|---|---|
Pardini 2008 | Czech | Caucasian | 532/532 | PCR-RFLP | HC | HB | Age and sex | 8 | 0.165 |
Gil 2012 | Poland | Caucasian | 133/100 | PCR-RFLP | NR | HB | Region | 3.5 | 0.803 |
Yue 2013 | China | Asian | 428/450 | PCR-RFLP | PC | HB | Age and sex | 6 | 0.964 |
Aizat 2013 | Malaysia | Asian | 255/255 | PCR-RFLP | HC | HB | NR | 5 | 0.316 |
Engin 2010 | Turkey | Caucasian | 110/116 | PCR-RFLP | NR | HB | NR | 5 | 0.642 |
Wu 2011 | China | Asian | 420/842 | PCR-RFLP | HC | PB | Age, sex, smoking and BMI | 9 | 0.639 |
Liu 2012 | China | Asian | 1028/1085 | PCR-RFLP | HC | HB | Age and sex | 8 | 0.740 |
Hansen 2007 | Denmark | Caucasian | 395/797 | Endpoint reading | NR | PB | Sex | 7.5 | 0.112 |