marginal significanceP = 0.04
After pooling all three sets of data, only the allele frequency showed a marginal significance, OR = 1.18 (95% CI = 1.01, 1.37, P = 0.04), and CT + TT genotypes did not reach a level of significant difference, OR = 1.15 (95% CI = 0.9–1.36, P = 0.09) ( Table 1 ).