Table 1 Characteristics of individual studies included in the meta-analysis
References | Country (ethnicity) | Sample size | Genotyping method | Case | HWE | Control | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Case | Control | CC | CT | TT | CC | CT | TT | ||||
Chen et al. (2004) | China (Asian) | 107 | 116 | RTDF-PRCR | 32 | 61 | 14 | Yes | 88 | 27 | 1 |
China (Asian) | 136 | 127 | SSP-PCR | 87 | 48 | 1 | Yes | 90 | 35 | 2 | |
Li et al. (2007) | China (Asian) | 164 | 121 | AS-PCR | 58 | 130 | 6 | Yes | 55 | 58 | 8 |
Yang et al. (2007) | China (Asian) | 54 | 42 | Gene chip | 29 | 23 | 2 | Yes | 34 | 8 | 0 |
Chatzikyriakidou et al. (2009) | Greece (Caucasian) | 49 | 68 | PCR-RFLP | 33 | 3 | 13 | No | 40 | 5 | 23 |
Cai et al. (2009) | China (Asian) | 112 | 96 | SSP-PCR | 34 | 69 | 9 | Yes | 72 | 22 | 2 |
Mei et al. (2009) | China (Asian) | 83 | 200 | PCR | 36 | 42 | 5 | Yes | 144 | 49 | 7 |
Chung et al. (2011) | Korea (Asian) | 119 | 135 | PCR-RFLP | 95 | 24 | 0 | Yes | 90 | 43 | 2 |
Tong et al. (2012) | China (Asian) | 106 | 106 | MALDI-TOF | 39 | 47 | 20 | Yes | 72 | 29 | 5 |
Ji et al. (2013) | China (Asian) | 57 | 30 | PCR-RFLP | 10 | 44 | 3 | Yes | 14 | 14 | 2 |