Table 1. Characteristics of included studies in this meta-analysis.
| Surname | Year | Country | Ethnicity | Source of control | N (cases/controls) | MAF | HWE | Score | |
|---|---|---|---|---|---|---|---|---|---|
| Antoniou | 2008 | UK | Caucasian | Nested | 7811 | 6607 | 0.32 | 0.413 | 9 |
| Garcia-Closas | 2008 | USA | Mixed | Nested | 22397 | 26012 | 0.30 | 0.398 | 9 |
| Barnholtz-Sloan | 2010 | USA | African | PB | 742 | 658 | 0.17 | 0.157 | 14 |
| Barnholtz-Sloan | 2010 | USA | Caucasian | PB | 1228 | 1117 | 0.31 | 0.332 | 14 |
| Gorodnova | 2010 | Russia | Caucasian | PB | 140 | 174 | 0.28 | 0.856 | 11 |
| Latif | 2010 | UK | Caucasian | HB | 922 | 366 | 0.33 | 0.938 | 12 |
| Tamimi | 2010 | USA | Caucasian | PB | 680 | 737 | 0.29 | 0.400 | 13 |
| Long | 2010 | China | Asian | PB | 6435 | 3839 | 0.12 | NA | 8 |
| Campa | 2011 | Germany | Mixed | Nested | 8292 | 11558 | 0.30 | 0.779 | 7 |
| Jiang | 2011 | China | Asian | PB | 492 | 510 | 0.14 | 0.078 | 12 |
| Butt | 2012 | Sweden | Caucasian | PB | 689 | 1330 | 0.29 | 0.579 | 9 |
| Sueta | 2012 | Japan | Asian | HB | 697 | 1394 | 0.15 | 0.367 | 11 |
PB, population based; HB, hospital based; MAF, Minor Allele Frequency; HWE, Hardy-Weinberg equilibrium; NA, not available.