Urine proteins and kidney function decline in the cohort study. A: Kaplan-Meier curves of CRI in 210 patients with T2D according to urine haptoglobin levels ≥20 ng/min vs. <20 ng/min. B: Urine albumin levels ≥20 μg/min vs. <20 μg/min. Log-rank test was used for comparing both groups. C: Percentage of CRI in subgroups divided according to urine levels of albumin and haptoglobin. D: ROC curves for UAER, UHER, and UAER and UHER combined.