(a).
| Cholecystostomy group (N = 71) | Acute cholecystectomy group (N = 736) | Difference | P (univariate analysis) | P (multivariate analysis) | |
|---|---|---|---|---|---|
| Mean hospital stay, days (95% confidence interval) | 11.4 (8.9–13.8) | 5.1 (4.8–5.4) | 6.3 (3.6–9.0) | <0.001 | <0.001 |
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