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Table 5 In-hospital Mortality of Major Hepatobiliary Surgery According to Hospital Volume Categories, Stratified by Underlying Disease

From: In-hospital mortality and failure to rescue following hepatobiliary surgery in Germany - a nationwide analysis

   Hospital Volume Categories
Very Low (1–10) Low (11–20) Medium (21–40) High (41–100) Very High (> 100)
Major Liver Surgery
 All Indications n/N 488/4208 269/2480 274/2646 406/4399 349/3540
Obs Rate % 11.6 10.9 10.4 9.2 9.9
Adj Rate % (95% CI) 11.4 (10.4–12.5) 10.1 (9.0–11.3) 9.19 (8.1–10.4) 8.0 (7.3–8.9) 7.4 (6.6–8.2)
 Metastatic Disease n/N 139/2149 74/1248 65/1221 91/1852 60/1250
Obs Rate % 6.5 5.9 5.3 4.9 4.8
Adj Rate % (95% CI) 6.5 (5.4–7.6) 5.4 (4.3–6.8) 5.02 (3.9–6.4) 4.83 (3.9–5.9) 4.67 (3.6–6.0)
 Malignant Neoplasm n/N 265/1286 148/813 159/982 250/1736 239/1702
Obs Rate % 20.6 18.2 16.2 14.4 14.0
Adj Rate % (95% CI) 18.8 (16.6–21.2) 15.8 (13.3–18.5) 13.34 (11.3–15.6) 11.86 (10.4–13.4) 10.59 (9.3–12.0)
 Benign Disease n/N 11/229 10/151 10/170 16/355 7/247
Obs Rate % 4.8 6.6 5.9 4.5 2.8
Adj Rate % (95% CI) 4.5 (2.3–8.1) 6.2 (3.0–11.3) 5.8 (2.8–10.6) 4.02 (2.3–6.5) 3.7 (1.5–7.6)
 Other Medical n/N 73/544 37/268 40/273 49/456 43/341
 Indicationa Obs Rate % 13.4 13.8 14.7 10.8 12.6
Adj Rate % (95% CI) 12.9 (10.1–16.2) 13.6 (9.6–18.7) 14.81 (10.6–20.2) 11.26 (8.3–14.9) 11.4 (8.2–15.3)
  1. Data are in n/N. Observed Rates (Obs Rate) in % and Adjusted Rates (Adj Rate) in % (95% CI). Covariates used for risk adjustment are displayed in Appendix Table 2
  2. aIncluding Liver Injury