Table 2 Association analyses of IL23R gene polymorphisms with the risk of ONFH. Genotype distributions, odds ratio (OR; 95% confidence interval) and corresponding P values for logistic analyses of three alternative models and alleles are shown. Logistic regressions were applied in codominant (homozygote for major allele vs heterozygote vs homozygote for minor allele), dominant (homozygote for major allele vs heterozygote + homozygote for minor allele), recessive (homozygote for major allele + heterozygote vs homozygote for minor allele), and allele (major vs minor) models
