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Table 5 Number of hospitals and cases for kidney 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

p

Hospitals with no. of cases ≥ 1

40

40

37

 

Change to 2006

-

0,0 %

−7,5 %

 

Annual no. of cases

2784

2784

2856

 

Change to 2006

-

0,0 %

+2,6 %

 

  Min. – max.

4–251

9–255

12–264

 

  Median

57,50

60,50

69,00

 

  Mean (SD)

69,60 (48,4)

69,60 (48,7)

77,19 (51,7)

 

Hospitals complying MVS*: 25 per year

38 (95 %)

36 (90,0 %)

35 (94,6 %)

 

No. of cases in hospitals complying MVS

2769 (99,5 %)

2721 (97,7 %)

2824 (98,9 %)

 

Hospitals not complying MVS

2 (5,0 %)

4 (10,0 %)

2 (5,4 %)

 

No. of cases in hospitals not complying MVS

15 (0,5 %)

63 (2,3 %)

32 (1,1 %)

 

Tercile 1 hospitals

13

13

12

 

No. of cases

1581

1597

1598

0,438**

 Percentage of annual cases

56,8 %

57,3 %

56,0 %

 

  Min. – max.

85–251

86–255

96–264

 

  Median

105,00

107,00

117,00

 

  Mean (SD)

121,62 (48,3)

122,85 (47,5)

133,17 (51,0)

 

Tercile 2 hospitals

14

14

13

 

No. of cases

837

830

883

0,288**

 Percentage of annual cases

30,1 %

29,8 %

30,9 %

 

  Min. – max.

39–84

39–84

40–94

 

  Median

57,50

60,50

69,00

 

  Mean (SD)

59,79 (16,1)

59,29 (15,1)

67,92 (15,6)

 

Tercile 3 hospitals

13

13

12

 

No. of cases

366

357

375

0,433**

 Percentage of annual cases

13,1 %

12,8 %

13,1 %

0,999#

  Min. – max.

4–38

9–38

12–39

 

  Median

32,00

30,00

33,50

 

  Mean (SD)

28,15 (10,4)

27,46 (9,0)

31,25 (8,0)

 
  1. *minimum volume standards; **Kruskal-Wallis-test; # chi-square-test