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Table 6 Number of hospitals and cases for stem cell 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 81 73 84  
Change to 2006 - −9,9 % +2,5 %  
Annual no. of cases 6181 5542 6320  
Change to 2006 - −10,3 % +2,2 %  
  Min. – max. 1–349 1–306 1–320  
  Median 40,00 40,00 38,50  
  Mean (SD) 76,31 (78,9) 75,92 (74,9) 75,24 (77,5)  
Hospitals complying MVS*: 25 per year 63 (77,8 %) 55 (75,3 %) 62 (73,8 %)  
No. of cases in hospitals complying MVS 5927 (95,9 %) 5290 (95,5 %) 6030 (95,4 %)  
Hospitals not complying MVS 18 (22,2 %) 18 (24,7 %) 21 (26,2 %)  
No. of cases in hospitals not complying MVS 254 (4,1 %) 252 (4,5 %) 290 (5,6 %)  
Tercile 1 hospitals 27 24 28  
No. of cases 4497 3940 4694 0,904**
 Percentage of annual cases 72,8 % 71,1 % 74,3 %  
  Min. – max. 80–349 83–306 82–320  
  Median 143,00 153,00 158,00  
  Mean (SD) 166,56 (76,1) 164,17 (67,1) 167,64 (167,6)  
Tercile 2 hospitals 27 24 28  
No. of cases 1202 1170 1184 0,381**
 Percentage of annual cases 19,4 % 21,1 % 18,7 %  
  Min. – max. 27–79 27–82 26–82  
  Median 40,00 40,50 38,50  
  Mean (SD) 44,52 (16,0) 48,75 (19,3) 42,29 (16,1)  
Tercile 3 hospitals 27 25 28  
No. of cases 482 432 442 0,547**
 Percentage of annual cases 7,8 % 7,8 % 7,0 % 0,990#
  Min. – max. 1–26 1–26 1–26  
  Median 19,00 19,00 16,00  
  Mean (SD) 17,85 (7,6) 17,28 (8,5) 15,79 (7,7)  
  1. *minimum volume standards; **Kruskal-Wallis-test; # chi-square-test