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Stratum-specific analysis (hazard ratios [HRs] for very high UIC compared to normal UIC). HRs were calculated in Cox proportional hazards regression models for all-cause mortality adjusting for age, sex, race/ethnicity, education status, active smoking, diabetes, hypertension, hypercholesterolemia, previous cardiovascular disease, previous cancer, body mass index, and estimated glomerular filtration rate (Model 2). p-Values test for homogeneity among subgroups.
