|
| Preoperative variables | HVBH n = 1047
Weighted n = 5235 | LVBH n = 4399
Weighted n = 21995 | value unadjusted | | |
|
| Age (years, mean ± SE) | 48.1 ± 0.6 | 48.5 ± 0.3 | 0.47 | | |
| Length of stay (days, mean ± SE) | 5.3 ± 0.2 | 4.9 ± 0.1 | 0.05 | | |
| Median household income quartile for zip code | 2.2 ± 0.1 | 2.2 ± 0.0 | 0.49 | | |
| Gender, female (%± SE) | 27.4 ± 1.4 | 30.0 ± 0.7 | 0.10 | | |
| Renal failure (%± SE) | 1.8 ± 0.4 | 1.6 ± 0.2 | 0.58 | | |
| Hypertension (%± SE) | 45.5 ± 1.6 | 44.6 ± 0.8 | 0.65 | | |
| Chronic obstructive pulmonary dis. (%± SE) | 8.2 ± 0.9 | 9.0 ± 0.4 | 0.48 | | |
| Diabetes mellitus type 2 (%± SE) | 10.4 ± 0.9 | 8.9 ± 0.4 | 0.12 | | |
| Anemia (%± SE) | 0.67 ± 0.25 | 0.36 ± 0.09 | 0.17 | | |
| Gastroesophageal reflux disease (%± SE) | 27.7 ± 1.5 | 23.1 ± 0.7 | 0.003 | | |
| Chronic peptic ulcer disease (%± SE) | 0.76 ± 0.27 | 1.18 ± 0.16 | 0.24 | | |
| Heart failure (%± SE) | 10.0 ± 1.0 | 8.2 ± 0.4 | 0.08 | | |
| Hypothyroidism (%± SE) | 10.7 ± 1.0 | 11.6 ± 0.5 | 0.43 | | |
| History of venous thromboembolism (%± SE) | 3.2 ± 0.6 | 2.7 ± 0.2 | 0.42 | | |
| History of pulmonary embolism (%± SE) | 2.1 ± 0.4 | 1.7 ± 0.2 | 0.36 | | |
| Nicotine dependence (%± SE) | 17.1 ± 1.2 | 15.7 ± 0.6 | 0.31 | | |
| Obstructive sleep apnea (%± SE) | 23.4 ± 1.4 | 19.5 ± 0.6 | 0.009 | | |
| Cholecystectomy volume (cases/hospital ± SE) | 54.9 ± 2.5 | 39.0 ± 0.9 | <0.0001 | | |
|
| Postprocedure complications | HVBH | LVBH | value unadjusted | ATE (95% CI) | value adjusted |
| Shock (%± SE) | 0.19 ± 0.13 | 0.11 ± 0.05 | 0.53 | — | — |
| Hemorrhage or hematoma (%± SE) | 0.10 ± 0.10 | 0.27 ± 0.08 | 0.29 | −0.20 (−0.39/−0.02) | 0.03 |
| Cardiac arrest (%± SE) | 0.19 ± 0.13 | 0.05 ± 0.03 | 0.12 | −0.49 (−1.01/0.03) | 0.07 |
| Bowel obstruction (%± SE) | 0.86 ± 0.28 | 1.14 ± 0.16 | 0.43 | −0.19 (−0.55/0.17) | 0.31 |
| Enterotomy (%± SE) | 0.38 ± 0.19 | 0.48 ± 0.10 | 0.68 | −0.17 (−0.53/0.19) | 0.36 |
| GI bleed (%± SE) | 0.19 ± 0.14 | 0.39 ± 0.09 | 0.33 | — | — |
| Pulmonary failure (%± SE) | 1.2 ± 0.3 | 1.6 ± 0.2 | 0.33 | −0.43 (−1.23/0.37) | 0.29 |
| Pneumonia (%± SE) | 0.19 ± 0.13 | 0.25 ± 0.07 | 0.72 | −0.15 (−0.39/0.08) | 0.20 |
| Genitourinary complication (%± SE) | 0.19 ± 0.13 | 0.09 ± 0.04 | 0.38 | — | — |
| Postoperative infection (%± SE) | 0.29 ± 0.16 | 0.43 ± 0.10 | 0.50 | −0.24 (−0.55/0.08) | 0.14 |
| Wound disruption (%± SE) | 0.29 ± 0.16 | 0.27 ± 0.08 | 0.94 | −0.17 (−0.41/0.06) | 0.15 |
| Venous thromboembolism (%± SE) | 0.10 ± 0.10 | 0.25 ± 0.07 | 0.34 | −0.17 (−0.41/0.07) | 0.17 |
| Pulmonary embolism (%± SE) | 0.29 ± 0.16 | 0.30 ± 0.08 | 0.96 | 0.09 (−0.38/0.56) | 0.70 |
| “Other” complications (%± SE) | 0.10 ± 0.10 | 0.16 ± 0.06 | 0.63 | — | — |
| Death (%± SE) | 0.67 ± 0.25 | 0.41 ± 0.10 | 0.26 | 0.22 (−0.27/0.71) | 0.39 |
| Patient had any complication (%± SE) | 3.82 ± 0.58 | 5.11 ± 0.34 | 0.08 | −1.88 (−3.17/−0.58) | 0.005 |
|
