Table 1.
Distribution of Data. This Includes All Features Included in the Model Except for Actual Surgical Procedure and Surgeon Identification
| Characteristic | All cases | |
|---|---|---|
| n | % | |
| Total | 13,447 | |
| Service line | ||
| Other | 1183 | 8.8 |
| Breast surgery | 866 | 6.4 |
| Colorectal surgery | 1203 | 8.9 |
| Ears nose and throat | 1766 | 13.1 |
| Minimally invasive surgery | 745 | 5.5 |
| Obstetrics and gynecology | 1904 | 14.2 |
| Orthopedic surgery | 4843 | 36.0 |
| Urology | 937 | 7.0 |
| ASA PS ≥ 3 (%) | 2895 | 21.5 |
| Age (y)–mean (SD) | 49.4 (16.6) | |
| Male sex (%) | 5409 | 40.2 |
| Weight (kg)–mean (SD) | 79.0 (19.2) | |
| Number of cases in the operating room–median (quartiles) | 5 (4–7) | |
| Number of times surgeon performed surgery–median (quartiles) | 38 (11–96) | |
| Scheduled incision time (min)–median (quartiles) | 60 (33–90) | |
| Scheduled room time (min)–median (quartiles) | 65 (40–95) | |
| Actual room time (min)–median (quartiles) | 74.5 (49–113) | |
| PACU length of stay (min)–median (quartiles) | 84 (63–112) | |
| Total perioperative time (room + PACU min)–median (quartiles) | 165 (122–225) | |
Abbreviations: ASA PS, American Society of Anesthesiologists Physical Status; PACU, postanesthesia care unit; SD, standard deviation.