ATP7A and vitamin D deficiency: The results of mixed exposure-adjusted covariates indicated that BP3 (OR: 0.857, 95% CI: (0.810, 0.906)), TRS (OR: 0.931, 95% CI: (0.882, 0.982)), and MC1 (OR: 0.910, 95% CI: (0.825, 0.992)) played a protective role against vitamin D deficiency.