Table 2 Frequency of NQO1 C609T polymorphism in different populations included in a meta-analysis
From: NQO1 C609T polymorphism and esophageal cancer risk: a HuGE review and meta-analysis
Ref. | Investigator | Year | Sample size (%) | Race | Cases (%) | Controls (%) | P value for HWE | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
CC | CT | TT | CC | CT | TT | ||||||
[25] | Hamajima et al. | 2002 | 343(10.47) | Asian | 36.3 | 51.0 | 12.7 | 35.7 | 44.4 | 19.9 | 0.165 |
[27] | Sarbia et al. | 2003 | 313(9.55) | Caucasian | 49.2 | 47.5 | 3.3 | 73.4 | 25.0 | 1.6 | 0.602 |
[29] | Zhang JH et al. | 2003 | 509(15.54) | Caucasian | 71.2 | 21.8 | 7.0 | 73.4 | 25.0 | 1.6 | 0.602 |
[29] | Zhang JH et al. | 2003 | 499(15.23) | Asian | 26.4 | 47.7 | 25.9 | 34.0 | 49.6 | 16.3 | 0.765 |
[30] | Zhang JH et al. | 2003 | 623(19.02) | Asian | 32.3 | 44.4 | 23.4 | 31.5 | 52.1 | 16.4 | 0.390 |
[28] | Rahden et al. | 2005 | 400(12.21) | Caucasian | 65.0 | 30.0 | 5.0 | 71.2 | 25.0 | 3.8 | 0.166 |
[31] | Zhang WC et al. | 2006 | 212(6.47) | Asian | 26.4 | 46.2 | 27.4 | 40.6 | 35.8 | 23.6 | 0.007 |
[24] | Martino et al. | 2007 | 234(7.14) | Caucasian | 68.1 | 30.5 | 1.4 | 59.1 | 35.5 | 5.4 | 0.986 |
[26] | Marjani et al. | 2010 | 143(4.37) | Caucasian | 54.8 | 37.6 | 7.5 | 44.0 | 48.0 | 8.0 | 0.467 |