Volume-outcome relationship and minimum volume regulations in the German hospital sector – evidence from nationwide administrative hospital data for the years 2005–2007

Hentschker, Corinna; Mennicken, Roman; Reifferscheid, Antonius; Wasem, Jürgen; Wübker, Ansgar

doi:10.1186/s13561-018-0204-8

Table 4 Results of the accessibility analysis for 2007

From: Volume-outcome relationship and minimum volume regulations in the German hospital sector – evidence from nationwide administrative hospital data for the years 2005–2007

	All patients				Affected patients
	Observed travel time	Minimum travel time			Observed travel time	Minimum travel time
	Observed travel time	Status quo	Immediate closure	Successive closure	Observed travel time	Status quo	Immediate closure	Successive closure
Liver
Average	69.0	45.0	49.3	48.4	43.7	36.2	70.0	67.8
Standard deviation	67.9	28.1	30.4	30.2	42.7	25.6	34.4	39.6
Minimum	2	2	2	2	4	4	13	13
Maximum	497	166	167	167	276	108	167	167
25% percentile	26	23	25	25	17	16	48	35
50% percentile	49	41	45	43	32.5	30.5	63.5	56
75% percentile	89	60	67	65	57	48	88	93
95% percentile	193	98	106	106	106	85	126	128
Min volume threshold	9	9	21	21
Number of hospitals	22	22	17	18
Number of patients	1041	1041	1041	1041	62	62	62	49
Kidney
Average	52.4	38.2	38.9	38.9	36.8	32.6	50.7	50.7
SD	41.6	23.5	23.8	23.8	18.8	15.5	15.5	15.5
Minimum	2	2	2	2	5	5	23	23
Maximum	451	130	130	130	83	61	82	82
25% percentile	23	19	20	20	25	25	41	41
50% percentile	43	33	34	34	38	34	53	53
75% percentile	71	54	55	55	48	45	61	61
95% percentile	125	84	84	84	61	55	72	72
Min volume threshold	19	19	26	26
Number of hospitals	42	42	40	40
Number of patients	2835	2835	2835	2835	41	41	41	41
Oesophagus
Average	35.7	19.6	26.2	23.5	24.6	16.0	29.5	26.1
SD	44.9	13.9	17.6	16.1	36.4	11.9	18.0	16.6
Minimum	0	0	0	0	0	0	2	0
Maximum	495	85	107	104	395	64	100	85
25% percentile	12	9	12	11	9	7	15	13
50% percentile	22.5	16	22	20	16	13	25	22
75% percentile	43	27	37	34	27	21	41	36
95% percentile	102	47	60	56	69	39	63	59
Min volume threshold	3	3	11	10
Number of hospitals	270	270	117	150
Number of patients	3080	3080	3080	3080	842	842	842	598
Pancreas
Average	33.2	15.6	19.1	18.1	17.4	12.8	24.4	22.9
SD	43.2	10.6	13.0	12.5	21.8	9.0	14.5	14.1
Minimum	0	0	0	0	0	0	1	1
Maximum	535	84	89	87	324	58	85	67
25% percentile	11	7	9	9	7	6	12	12
50% percentile	19	13	16	15	13	11	21	20
75% percentile	38	21	27	25	21	17	34	31
95% percentile	104	36	44	43	43	30	52	51
Min volume threshold	3	3	10	10
Number of hospitals	502	502	303	338
Number of patients	8733	8733	8733	8733	1111	1111	1111	829
Stem cell
Average	51.4	30.7	33.2	32.5	37.2	25.3	39.3	37.1
SD	49.6	19.8	20.7	20.5	39.6	16.3	19.4	19.8
Minimum	0	0	0	0	2	1	4	4
Maximum	481	117	117	117	251	109	109	109
25% percentile	20	15	16	16	16	14	23	21
50% percentile	39	26	29	28	26	22	37	34
75% percentile	65	42	46	45	44	32	52	50
95% percentile	138	70	73	72	113	58	73	72
Min volume threshold	4	4	25	25
Number of hospitals	90	90	65	68
Number of patients	5517	5517	5517	5517	317	317	317	264
Knee
Average	26.7	12.9	13.6	13.5	22.3	11.8	16.8	16.5
SD	32.1	7.8	8.2	8.1	30.2	7.3	9.2	8.9
Minimum	0	0	0	0	0	0	0	0
Maximum	553	92	92	92	465	46	62	53
25% percentile	11	7	7	7	9	6	10	10
50% percentile	19	11	12	12	15	10	16	15
75% percentile	31	18	18	18	25	16	22	22
95% percentile	68	27	29	29	60	26	34	34
Min volume threshold	3	3	50	50
Number of hospitals	974	974	845	853
Number of patients	133,389	133,389	133,389	133,389	3290	3290	3290	2924
CABG
Average	45.1	31.3	32.5	32.5	45.2	29.7	49.5	48.6
SD	38.8	18.5	19.3	19.2	46.9	19.2	25.4	24.7
Minimum	0	0	0	0	0	0	2	2
Maximum	497	113	113	113	458	96	110	106
25% percentile	19	17	17	17	16	15	29	27
50% percentile	34	28	28	28	29	25	48	49
75% percentile	59	43	45	45	62	41	65	65
95% percentile	113	66	69	68	132	68	96	92
Min volume threshold	3	3	200	200
Number of hospitals	83	83	71	72
Number of patients	37,965	37,965	37,965	37,965	1133	1133	1133	943

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ISSN: 2191-1991

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