Risk of 30-day postoperative mortality and complications among controls and patients with preoperative regular dialysis receiving non-cardiac surgery.

*Adjusted for age, sex, teaching hospital, coexisting disease and type of surgery and anesthesia.†Increased length of stay: patients in specific groups who’s length of hospitalization were above the lower limit of the highest quintile of length of stay (≥18 days in this study) among the overall patients and divided by number of patients in each group as the percent of increased length of stay.OR, odds ratio; CI, confidence interval; ICU, intensive care unit.