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Table 4 Length of Stay, In-hospital Mortality and Failure to Rescue Following Minor and Major Hepatobiliary Resections, According to Hospital Volume Categories

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)
Minor Liver Surgery
 Length of Stay (Days) Median (IQR) 14 (10–21) 13 (10–20) 12 (9–18) 13 (9–21) 12 (9–19)
 In-hospital Mortality n/N 247/5526 82/2473 60/2002 93/2156 57/1684
Obs Rate % 4.5 3.3 3.0 4.3 3.4
Adj Rate % (95% CI) 4.5 (4.0–5.1) 3.3 (2.6–4.1) 3.3 (2.5–4.2) 4.0 (3.2–4.8) 3.3 (2.5–4.2)
 Incidence of Complicationsa n/N 1137/5526 479/2473 391/2002 507/2156 408/1684
Obs Rate % 20.58 19.37 19.53 23.52 24.23
 Failure to Rescuea n/N 208/1137 73/479 57/391 87/507 53/408
Obs Rate % 18.29 15.24 14.58 17.16 12.99
Adj Rate % (95% CI) 17.9 (15.6–20.5) 15.33 (12.0–19.3) 14.0 (10.6–18.1) 17.1 (13.7–21.1) 13.54 (10.1–17.7)
Major Liver Surgery
 Length of Stay (Days) Median (IQR) 17 (12–28) 17 (12–29) 16 (12–28) 17 (12–28) 18 (12–30)
 In-hospital Mortality 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)
 Incidence of Complicationsa n/N 1487/4208 893/2480 881/2646 1514/4399 1405/3540
Obs Rate % 35.34 36.01 33.30 34.42 39.69
 Failure to Rescuea n/N 451/1487 259/893 268/881 394/1514 341/1405
Obs Rate % 30.33 29.00 30.42 26.02 24.27
Adj Rate % (95% CI) 29.38 (26.7–32.2) 27.13 (23.9–30.7) 28.05 (24.8–31.6) 24.0 (21.7–26.5) 21.38 (19.2–23.8)
  1. Data are in n/N. Observed Rate (Obs Rate) in % and Adjusted Rate (Adj Rate) in % (95% CI). Covariates used for risk adjustment are displayed in Appendix Table 2
  2. aNumber of Treatment Cases with at Least one Complication (including Peritonitis, Sepsis, Liver Failure, Acute Myocardial Infarction, Stroke, Pulmonary Embolism, Hemodialysis [> 72 h], Prolonged Mechanical Ventilation [> 48 h], Blood Transfusions [≥6], Percutaneous Abdominal Drainage)