|
| Preoperative variables | HVBH n = 942
Weighted n = 4710 | LVBH n = 823
Weighted n = 4115 | value unadjusted | | |
|
| Age (years, mean ± SE) | 47.9 ± 0.6 | 51.0 ± 0.5 | <0.0001 | | |
| Length of stay (days, mean ± SE) | 3.3 ± .02 | 4.1 ± 0.2 | <0.0001 | | |
| Median household income quartile for zip code | 2.5 ± 0.05 | 2.4 ± 0.04 | 0.05 | | |
| Gender, female (% ± SE) | 75.5 ± 1.5 | 71.5 ± 1.4 | 0.06 | | |
| Renal failure (% ± SE) | 0.73 ± 0.30 | 1.17 ± 0.33 | 0.34 | | |
| Hypertension (% ± SE) | 53.3 ± 1.6 | 52.4 ± 1.5 | 0.68 | | |
| Chronic obstructive pulmonary dis. (%± SE) | 5.2 ± 0.8 | 7.9 ± 0.9 | 0.03 | | |
| Diabetes mellitus type 2 (%± SE) | 9.5 ± 1.0 | 11.7 ± 1.0 | 0.12 | | |
| Anemia (%± SE) | 1.94 ± 0.71 | 0.74 ± 0.27 | 0.05 | | |
| Gastroesophageal reflux disease (%± SE) | 39.5 ± 2.1 | 36.9 ± 1.9 | 0.38 | | |
| Chronic peptic ulcer disease (%± SE) | 0.49 ± 0.30 | 0.74 ± 0.26 | 0.54 | | |
| Heart failure (%± SE) | 4.1 ± 0.7 | 6.8 ± 0.8 | 0.01 | | |
| Hypothyroidism (%± SE) | 11.5 ± 1.0 | 12.5 ± 1.0 | 0.49 | | |
| History of venous thromboembolism (%± SE) | 3.7 ± 0.8 | 2.6 ± 0.5 | 0.19 | | |
| History of pulmonary embolism (%± SE) | 2.3 ± 0.5 | 1.6 ± 0.4 | 0.25 | | |
| Nicotine dependence (%± SE) | 21.4 ± 2.1 | 19.0 ± 1.3 | 0.30 | | |
| Obstructive sleep apnea (%± SE) | 42.9 ± 3.6 | 33.7 ± 1.6 | 0.01 | | |
| Cholecystectomy volume (cases/hospital ± SE) | 62.2 ± 8.1 | 40.4 ± 1.2 | <0.00 | | |
|
| Postprocedure complications | HVBH | LVBH | value unadjusted | ATE (95% CI) | value adjusted |
| Shock (% ± SE) | 0.24 ± 0.17 | 0.42 ± 0.21 | 0.52 | — | — |
| Hemorrhage or hematoma (% ± SE) | 0.49 ± 0.22 | 0.42 ± 0.21 | 0.84 | — | — |
| Bowel obstruction (%± SE) | 1.22 ± 0.39 | 1.91 ± 0.45 | 0.25 | −0.50 (−1.57/0.58) | 0.36 |
| Enterotomy (%± SE) | 0.73 ± 0.30 | 0.64 ± 0.24 | 0.81 | 0.37 (−0.35/1.10) | 0.32 |
| GI bleed (%± SE) | 0.49 ± 0.25 | 0.85 ± 0.28 | 0.34 | −0.33 (−1.10/0.43) | 0.39 |
| Pulmonary insufficiency (%± SE) | 0.12 ± 0.12 | 0.42 ± 0.18 | 0.22 | — | — |
| Pulmonary failure (%± SE) | 0.85 ± 0.30 | 4.14 ± 0.67 | <0.0001 | −3.27 (−4.8/−1.73) | <0.0001 |
| Pneumonia (%± SE) | 0.61 ± 0.28 | 0.42 ± 0.18 | 0.57 | — | — |
| Genitourinary complication (%± SE) | 0.24 ± 0.17 | 0.21 ± 0.15 | 0.89 | — | — |
| Postoperative infection (%± SE) | 0.85 ± 0.31 | 0.85 ± 0.30 | 1.00 | 0.18 (−0.90/1.26) | 0.74 |
| Wound complication (%± SE) | 0.12 ± 0.12 | 0.11 ± 0.11 | 0.92 | — | — |
| Venous thromboembolism (%± SE) | 0.12 ± 0.12 | 0.42 ± 0.21 | 0.23 | — | — |
| Pulmonary embolism (%± SE) | 0.36 ± 0.21 | 0.32 ± 0.18 | 0.87 | — | — |
| “Other” complications (%± SE) | 0.12 ± 0.12 | 0.11 ± 0.11 | 0.92 | — | — |
| death (%± SE) | 0.24 ± 0.17 | 0.96 ± 0.32 | 0.06 | −0.65 (−1.30/0.01) | 0.05 |
| Patient had any complication (%± SE) | 6.0 ± 0.9 | 9.5 ± 1.0 | 0.01 | −2.67 (−5.25/−0.09) | 0.04 |
|
