Worse Outcomes in Patients Undergoing Urgent Surgery for Left-Sided Diverticulitis Admitted on Weekends vs Weekdays

Results: In total, 31 832 patients were included; 7066 (22.2%) were admitted on weekends, and 24 766 (77.8%) were admitted on weekdays. The mean (SD) age of patients was 60.8 (15.3) years, and 16 830 (52.9%) were female. A Hartmann procedure was performed in 4580 patients (64.8%) admitted on weekends compared with 13 351 patients (53.9%) admitted on weekdays (riskadjusted odds ratio [OR], 1.57; P .001). In riskadjusted analyses, patients admitted on weekends had significantly higher risk for any postoperative complication (OR, 1.10; P=.005) and nonroutine hospital discharge (OR, 1.33; P .001) compared with patients admitted on weekdays, as well as a median length of hospital stay that was 0.5 days longer and median total hospital charges that were $3734 higher (P .001 for both).