Table 2.

SERPINE2 genotypes of COPD cases and controls, and their association with the risk of COPD

^*Number of cases/number of controls; ^†Two-sided χ² test for either genotype distributions or allele frequencies between cases and controls; ^‡Odds ratios (ORs), 95% confidence intervals (95% CIs) and P values were calculated by unconditional logistic regression analysis, adjusted for age and pack-years of smoking; ^§ORs (95% CIs) and P values were calculated by unconditional logistic regression analysis, adjusted for pack-years of smoking; ^∥Minor allele frequency.

Threshold P value for a significant association=0.014, based on Bonferroni correction for the effective number of independent tests (M_eff=3.59).