Crude and adjusted hazard ratios for stroke among the primary chronic kidney disease (CKD) and control groups younger than 75 years old and without comorbidities during the three-year follow-up period (n = 1617).

Abbreviations: 95% CI = 95% confidence interval; HR = hazard ratio.*Adjustments are made for patient's age, gender, diabetes, hypertension, coronary heart disease, hyperlipidemia, geographic region, urbanization level, and enrollee category.