Table 1.
Characteristics of hospitals performing each surgical procedure over five years. Hospital characteristics data are from the AHA. Number of surgeries annually is defined by the number of patients undergoing surgery who stay overnight in the hospital
| Procedures | |||||
|---|---|---|---|---|---|
| Endo AAA | Cystectomy | PD | Esophagectomy | Open AAA | |
| # of hospitals in cohort, n | 866 | 254 | 156 | 162 | 549 |
| Academic status, n (%) | |||||
| non-teaching | 329 (38.0) | 39 (15.4) | 7 (4.5) | 13 (8.0) | 183 (33.3) |
| teaching | 537 (62.0) | 215 (84.7) | 149 (95.5) | 149 (92.0) | 366 (66.7) |
| Hospital beds, n (%) | |||||
| <200 | 126 (14.6) | 15 (5.9) | 6 (3.9) | 7 (4.3) | 47 (8.6) |
| 200-399 | 426 (49.2) | 60 (23.6) | 24 (15.4) | 22 (13.6) | 245 (44.6) |
| 400-599 | 197 (22.8) | 96 (37.8) | 53 (34.0) | 58 (35.8) | 152 (27.7) |
| 600-799 | 78 (9.0) | 48 (18.9) | 45 (28.9) | 43 (26.5) | 68 (12.4) |
| 800-999 | 23 (2.7) | 21 (8.3) | 17 (10.9) | 20 (12.4) | 23 (4.2) |
| 1000+ | 16 (1.9) | 14 (5.5) | 11 (7.1) | 12 (7.4) | 14 (2.6) |
| Average daily census, median (IQR) | 230 (161-351) | 376 (270-519) | 446 (319-603) | 429 (329-604) | 272 (183-417) |
| Number of surgeries annually, median (IQR)* | 5,097 (3,405-8,047) | 8,720 (6,196-11,704) | 10,218 (7,392-13,729) | 10,389 (7,472-13,594) | 6,364 (4,238-9,201) |
| Percentage of hospital beds designated as ICU beds n (%) | |||||
| <2.5% | 1 (0.1) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (0.2) |
| 2.5-4.9% | 28 (3.2) | 13 (5.1) | 6 (3.9) | 6 (3.7) | 20 (3.6) |
| 5-<7.4% | 181 (20.9) | 49 (19.3) | 24 (15.4) | 25 (15.4) | 100 (18.2) |
| 7.5-9.9% | 300 (34.6) | 88 (34.7) | 62 (39.7) | 57 (35.2) | 191 (34.8) |
| 10-12.4% | 180 (20.8) | 49 (19.3) | 30 (19.2) | 36 (22.2) | 110 (20.0) |
| 12.5-14.9% | 94 (10.9) | 31 (12.2) | 20 (12.8) | 23 (14.2) | 68 (12.4) |
| ≥15% | 82 (9.5) | 24 (9.5) | 14 (9.0) | 15 (9.3) | 59 (10.8) |
| Trauma Center | |||||
| no | 389 (45.0) | 75 (29.5) | 40 (25.6) | 45 (27.8) | 217 (39.5) |
| yes | 476 (55.0) | 179 (70.5) | 116 (74.4) | 117 (72.2) | 332 (60.5) |
AAA = abdominal aortic aneurysm; ICU = intensive care unit; IQR = interquartile range; PD = pancreaticoduodenectomy