Table 2.
Baseline characteristics of Michigan Bariatric Surgery Collaborative patients according to tercile of median surgeon operative time [BMI: body mass index; NIDDM: Non-insulin Dependent Diabetes Mellitus; VTE: Venous Thromboembolic Events; values are listed as mean ± standard deviation or number (percentage)].
| Patient Characteristics | Terciles of Surgeon Operative Time
|
p-value | ||
|---|---|---|---|---|
| Fast N = 7,235 |
Medium N = 4,264 |
Slow N = 4,845 |
||
|
| ||||
| Demograhics | ||||
| Age | 45.0 ± 11.3 | 47.0 ± 11.6 | 46.0 ± 11.0 | <0.001 |
| Body mass index (pre-op) | 47.5 ± 7.7 | 47.2 ± 7.8 | 48.2 ± 8.0 | <0.001 |
| Male (%) | 1,457 (20.1) | 933 (21.9) | 1,013 (20.9) | 0.083 |
| Private insurance (%) | 4,541 (62.8) | 3,118 (73.1) | 3,366 (69.5) | <0.001 |
| Current smoker (%) | 190 (2.6) | 179 (4.2) | 226 (4.7) | <0.001 |
| Mobility Limitations (%) | 331 (4.6) | 275 (6.4) | 335 (6.9) | <0.001 |
| Comorbidities (%) | ||||
| Musculoskeletal disorder | 6,240 (86.2) | 3,203 (75.1) | 3,714 (76.7) | <0.001 |
| Cardiovascular Disease | 3,743 (51.7) | 2,559 (60.0) | 2,891 (59.7) | <0.001 |
| Hypertension | 3,635 (50.2) | 2,440 (57.2) | 2,817 (58.1) | <0.001 |
| Hyperlipidemia | 3,713 (51.3) | 2,348 (55.1) | 2,631 (54.3) | <0.001 |
| Gastroesophageal reflux | 3,328 (46.0) | 2,174 (51.0) | 2,586 (53.4) | <0.001 |
| Psychological disorder | 3,601 (49.8) | 2,258 (53.0) | 2,284 (47.1) | <0.001 |
| Sleep apnea | 3,163 (43.7) | 2,206 (51.7) | 2,284 (47.1) | <0.001 |
| NIDDM | 2,339 (32.3) | 1,618 (38.0) | 1,766 (36.4) | <0.001 |
| NIDDM requiring insulin | 778 (10.8) | 507 (11.9) | 590 (12.2) | 0.034 |
| Cholelithiasis | 2,034 (28.1) | 1,248 (29.3) | 1,316 (27.2) | 0.083 |
| Lung Disease | 1,990 (27.5) | 1,044 (24.5) | 1,441 (29.7) | <0.001 |
| Urinary incontinence | 1,434 (19.8) | 1,195 (28.0) | 1,223 (25.2) | <0.001 |
| Liver disorder | 266 (3.7) | 227 (5.3) | 244 (5.0) | <0.001 |
| Prior VTE | 248 (3.4) | 172 (4.0) | 248 (5.1) | <0.001 |
| Peptic ulcer disease | 182 (2.5) | 116 (2.7) | 273 (5.6) | <0.001 |
| History of abdominal wall hernia repair | 179 (2.5) | 101 (2.4) | 113 (2.3) | 0.869 |