CRP and chronic kidney disease: Multivariate logistic regression analysis adjusted for DM, age, SBP, DBP, fasting glucose, eGFR, iPTH, CRP, and 25-hydroxyvitamin D revealed age (odds ratio (OR) 1.140, 95% confidence interval [CI] 1.088–1.194, p < 0.001) and serum 25-hydroxyvitamin D level (OR 0.895, 95% CI 0.828–0.968, p = 0.005) to be independent predictors of PAS in CKD patients (Table 2).