VDR and Sepsis: No statistical association between VDR Apa I polymorphism and sepsis susceptibility were observed under the allelic contrast model (A vs a, P = .95, OR = 1.01, 95% CI = 0.86–1.17), dominant genetic model (AA vs Aa + aa, P = .80, OR = 1.03, 95% CI = 0.83–1.28), recessive genetic model (AA + Aa vs aa, P = .49, OR = 0.90, 95% CI = 0.67–1.21).