highly significantp <0.001
After stratification by sex, the protective effect of the HO-1 (GT)n S/S genotype was highly significant in men (OR 5.50, 95% CI 2.67-11.34, p <0.001), whereas the association was not significant in women (OR 1.60, 95% CI 0.75-3.34, p = 0.228).