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Table 7 Number of hospitals and cases for liver transplantations in 2006, 2008, and 2010 and number of cases per tercile

From: Minimum volume standards in German hospitals: do they get along with procedure centralization? A retrospective longitudinal data analysis

  2006 2008 2010  
Hospitals with no. of cases ≥ 1 23 23 23  
Change to 2006 - 0,0 % 0,0 %  
Annual no. of cases 1381 1386 1464  
Change to 2006 - +0,4 % +6,0 %  
  Min. – max. 16–143 11–146 17–160  
  Median 51,00 47,00 60,00  
  Mean (SD) 60,04 (36,7) 60,26 (37,9) 63,65 (35,7)  
Hospitals complying MVS*: 20 per year 22 (95,7 %) 20 (87,0 %) 22 (95,7 %)  
No. of cases in hospitals complying MVS 1365 (98,8 %) 1349 (97,3 %) 1447 (98,8 %)  
Hospitals not complying MVS 1 (4,3 %) 3 (13,0 %) 1 (4,3 %)  
No. of cases in hospitals not complying MVS 16 (1,2 %) 37 (2,7 %) 17 (1,2 %)  
Tercile 1 hospitals 7 7 7  
No. of cases 739 748 749 0,989**
 Percentage of annual cases 53,5 % 54,0 % 51,2 %  
  Min. – max. 65–143 80–146 90–160  
  Median 103,00 102,00 97,00  
  Mean (SD) 105,57 (29,6) 106,86 (24,4) 107,00 (24,4)  
Tercile 2 hospitals 8 8 8  
No. of cases 426 444 483 0,428**
 Percentage of annual cases 30,8 % 32,0 % 33,0 %  
  Min. – max. 46–60 42–70 43–81  
  Median 53,50 55,50 60,00  
  Mean (SD) 53,25 (5,4) 55,50 (13,3) 60,38 (12,2)  
Tercile 3 hospitals 8 8 8  
No. of cases 216 194 232 0,578**
 Percentage of annual cases 15,6 % 14,0 % 15,8 % 0,990#
  Min. – max. 16–41 11–41 17–43  
  Median 24,50 20,50 28,50  
  Mean (SD) 27,00 (8,5) 24,25 (12,5) 29,00 (9,4)  
  1. *minimum volume standards; **Kruskal-Wallis-test; # chi-square-test