Table 1. Characteristics of included studies.
| Study | Year | Nationality | Type | Number of cases/controls | Genotype method |
|---|---|---|---|---|---|
| Nimptsch et al. | 2015 | Mixed | CRC | 727/727 | TaqMan |
| Yang et al. | 2011 | China | CRC | 421/218 | TaqMan |
| Slattery et al. (CC) | 2011 | U.S.A. | CRC | 1574/1970 | Golden Gate assay |
| Slattery et al. (RC) | 2011 | U.S.A. | CRC | 791/999 | Golden Gate assay |
| Ognjanovic et al. | 2010 | U.S.A. | CRC | 271/539 | TaqMan |
| Tsilidis et al. | 2009 | U.S.A. | CRC | 208/381 | TaqMan |
| Siemes et al. (CRC) | 2006 | Holland | CRC | 189/5767 | TaqMan |
Abbreviation: CC, colon cancer.