Table 2.

Number of hospitals and cases for complex pancreatic interventions in 2006, 2008, and 2010 and number of cases per quintile

	2006	2008	2010	p
Hospitals with no. of cases ≥ 1	437	444	461
Change to 2006	-	+1,6 %	+5,5 %
Annual no. of cases	8258	8843	9180
Change to 2006	-	+7,1 %	+11,2 %
Min. – max.	1–384	1–395	1–427
Median	11,00	13,00	13,00
Mean (SD)	18,90 (31,6)	19,92 (29,3)	19,91 (29,6)
Hospitals complying MVS*: 10 per year	279 (63,8 %)	311 (70,0 %)	328 (71,1 %)
No. of cases in hospitals complying MVS	7534 (91,2 %)	8236 (93,1 %)	8576 (93,4 %)
Hospitals not complying MVS	158 (36,2 %)	133 (30,0 %)	133 (28,9 %)
No. of cases in hospitals not complying MVS	724 (8,8 %)	607 (6,9 %)	604 (6,6 %)
Quintile 1 hospitals	87	88	92
No. of cases	4794	4938	5087	0,735**
Percentage of annual cases	58,0 %	55,8 %	55,4 %
Min. – max.	25–384	25–395	27–427
Median	38,00	40,00	39,00
Mean (SD)	55,10 (57,0)	56,11 (50,6)	55,29 (51,8)
Quintile 2 hospitals	87	89	92
No. of cases	1550	1682	1770	0,002**
Percentage of annual cases	18,8 %	19,0 %	19,3 %
Min. – max.	14–25	15–25	15–26
Median	17,00	18,00	18,00
Mean (SD)	17,82 (3,4)	18,90 (2,5)	19,24 (3,2)
Quintile 3 hospitals	87	89	92
No. of cases	1010	1152	1182	<0,001**
Percentage of annual cases	12,2 %	13,0 %	12,9 %
Min. – max.	10–14	11–15	11–15
Median	12,00	13,00	13,00
Mean (SD)	11,61 (1,1)	12,94 (1,3)	12,85 (1,3)
Quintile 4 hospitals	88	89	92
No. of cases	673	802	860	<0,001**
Percentage of annual cases	8,1 %	9,1 %	9,4 %
Min. – max.	5–10	6–11	7–11
Median	8,00	10,00	10,00
Mean (SD)	7,65 (1,6)	9,01 (1,5)	9,35 (1,3)
Quintile 5 hospitals	88	89	93
No. of cases	231	269	281	0,295**
Percentage of annual cases	2,8 %	3,0 %	3,1 %	0,999#
Min. – max.	1–5	1–6	1–6
Median	3,00	3,00	3,00
Mean (SD)	2,63 (1,4)	3,02 (1,8)	3,02 (1,7)

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