Table 2.
Baseline Characteristics by Type of Surgical Procedure
| Anterior Cruciate Ligament Reconstruction n (%) | Cholecystectomy n (%) | Hernia Repair n (%) | Breast-Conserving Surgery n (%) | |
|---|---|---|---|---|
| Total number of patients | 21,062 | 57,750 | 60,861 | 42,489 |
| Female | 8,617 (40.9) | 43,058 (74.6) | 12,243 (20.1) | 42,489 (100.0) |
| Age (median, interquartile range) | 30 (19–42) | 45 (35–54) | 48 (37–56) | 49 (42–56) |
| Operation facility type | ||||
| Inpatient hospital | 981 (4.7) | 14,360 (24.9) | 4,743 (7.8) | 2,330 (5.5) |
| Ambulatory surgery center | 6,939 (33.0) | 3,552 (6.2) | 8,378 (13.8) | 4,326 (10.2) |
| Outpatient hospital | 8,049 (38.2) | 33,848 (58.6) | 40,183 (66.0) | 26,211 (61.7) |
| Missing facility | 5,093 (24.2) | 5,990 (10.4) | 7,557 (12.4) | 9,622 (22.7) |
| Surgical site infection (SSI) | ||||
| No SSI | 20,843 (99.0) | 57,334 (99.3) | 60,199 (98.9) | 41,821 (98.4) |
| Non-serious SSI | 51 (0.2) | 150 (0.3) | 291 (0.5) | 340 (0.8) |
| Serious SSI* | 168 (0.8) | 266 (0.5) | 371 (0.6) | 328 (0.8) |
| Wound care | 9 (5.4) | 45 (16.9) | 86 (23.2) | 146 (44.5) |
| Outpatient surgery | 32 (19.0) | 9 (3.4) | 25 (6.7) | 50 (15.2) |
| Inpatient hospitalization without reoperation | 33 (19.6) | 158 (59.4) | 179 (48.2) | 97 (29.6) |
| Reoperation during inpatient hospitalization | 94 (56.0) | 54 (20.3) | 81 (21.8) | 35 (10.7) |
*
Serious SSI defined as requiring wound care and/or hospitalization. The rows following display the categorization of serious SSI according to increasing severity.