Polymorphisms Alleles Controls (%) Cases (%) χ2 P-value P value  (Cochrane- Armitage trend test)
Number 288 (100) 300 (100)      
TT 140 (48.6) 143 (47.7) 5.3 0.07 0.238
TG 129 (44.8) 121 (40.3)      
GG 19 (6.6) 36 (12.0)      
T frequency 0.71 0.68 0.64 0.43 -
G frequency 0.29 0.32      
TT & GT 269 (93.4) 264 (88.0) 5.06 0.025 -
GG 19 (6.6) 36 (12.0)      
Table 3: Genotype and allele frequency of SNP +45T>G(rs2241766) among cases and controls.