ALB and diabetes mellitus: There exist negative correlations between serum 25(OH)D level with age, diabetes, alkaline phosphatase level, NLR, PLR, and MLR (p = .002, p = .002, p = .037, p = .001, p = .041, and p < .001, respectively) and positive correlations between serum 25(OH)D level with albumin level, creatinine level, phosphorus level, HDL‐C, and LDL‐C (p < .001, p < .001, p = .013, p = .02, p = .002, respectively).