In contrast, patients with an eGFR ≥ 60 ml/min/1.73 m2 and higher vitamin D concentrations had a 2.8% reduced mortality risk (HR = 0.972; CI = 0.95-0.99; p = 0.0097) even after adjusting for potential confounders such as sex, heart disease, and CRP value. Here, CRP is linked to heart disorder.