Reference Author Year Cases Controls Cases (Allele) Controls (Allele) Cases dominant model Controls dominant model Cases Recessive model Controls Recessive model
      CC CT TT CC CT TT CC TT CC TT CC CT+TT CC CT+TT CC+CT TT CC+CT TT
10 Hamajima et al. 2002 48 71 24 154 179 66 167 119 487 311 48 95 154 245 119 24 333 66
11 Zhang et al. 2003 40 55 29 52 86 27 135 113 190 140 40 84 52 311 95 29 138 27
12 Sarbia et. al 2003 200 10 10 185 63 4 510 130 433 71 200 120 185 67 310 10 248 4
13 Malik et al. 2012 51 39 18 112 68 15 141 75 292 98 51 57 112 83 90 18 180 15
Table 2: NQO1609C>T polymorphism genotype distribution of each study included in the meta-analysis.