Table 2. Characteristics of patients and treating institutions, broken down by fulfillment or non-fulfillment of minimum caseload requirements.

	Minimum caseload achieved							Minimum caseload not achieved
	2005	2006	2007	2008	2009	2010	2011	2005	2006	2007	2008	2009	2010	2011
Hepatic transplantation (including partial liver donation from a living donor)*
Treating institutions	116	16	17	16	17	19	17	403	19	14	21	11	14	14
Cases	4462	922	1058	1019	1036	1186	1078	1337	98	73	72	43	45	94
Mean number of cases	38	58	62	64	61	62	63	3	5	5	3	4	3	7
Mean age	57	46	48	48	48	47	48	63	51	52	54	55	53	55
Percent female	44%	36%	36%	39%	35%	36%	33%	47%	49%	33%	35%	45%	48%	28%
Renal transplantation
Treating institutions	39	38	38	35	35	37	36	11	13	9	12	12	5	13
Cases	2611	2717	2861	2645	2693	2862	2817	28	30	48	95	76	30	60
Mean number of cases	67	72	75	76	77	77	78	3	2	5	8	6	6	5
Mean age	49	50	50	49	50	50	50	44	42	55	49	53	50	54
Percent female	39%	38%	38%	37%	36%	37%	37%	18%	47%	35%	35%	28%	40%	27%
Complex esophageal surgery
Treating institutions	186	118	116	121	131	127	130	259	281	310	305	280	300	281
Cases	2677	2251	2323	2455	2615	2589	2634	509	997	1035	1069	973	1029	1039
Mean number of cases	14	19	20	20	20	20	20	2	4	3	4	3	3	4
Mean age	62	62	62	63	63	63	63	64	65	65	66	66	66	65
Percent female	20%	24%	23%	23%	22%	22%	22%	25%	27%	27%	28%	25%	27%	22%
Complex pancreatic surgery*
Treating institutions	420	247	297	302	322	320	348	340	450	376	365	347	360	330
Cases	8208	6748	7816	7979	8444	8658	9369	696	1579	1333	1320	1270	1347	1208
Mean number of cases	20	27	26	26	26	27	27	2	4	4	4	4	4	4
Mean age	61	61	62	62	62	63	63	61	63	63	63	64	64	64
Percent female	42%	42%	43%	44%	43%	45%	44%	40%	44%	43%	43%	46%	43%	43%
Stem cell transplantation
Treating institutions	67	62	63	61	56	62	59	30	34	34	35	41	34	32
Cases	5380	5796	5405	5587	5609	6036	6359	157	382	328	367	455	331	366
Mean number of cases	80	93	86	92	100	97	108	5	11	10	10	11	10	11
Mean age	47	48	48	48	49	50	50	53	55	50	52	52	53	56
Percent female	38%	38%	38%	38%	37%	38%	38%	29%	38%	39%	36%	40%	38%	34%
Total knee replacement
Treating institutions	703	794	837	861	874	879	859	338	205	148	135	130	136	165
Cases	110535	120321	131576	138774	141739	140018	137502	7708	4361	3191	3102	3377	3477	4426
Mean number of cases	157	152	157	161	162	159	160	23	21	22	23	26	26	27
Mean age	70	70	70	70	70	69	69	70	70	70	70	70	70	70
Percent female	69%	69%	68%	67%	67%	66%	65%	70%	67%	68%	68%	67%	65%	67%
Treatment of low-birth-weight neonates
Treating institutions	147	145	145	140	147	151	152	318	288	258	230	222	220	195
Cases	4958	4864	5113	4878	5014	5692	5301	1077	937	868	768	718	686	585
Mean number of cases	34	34	35	35	34	37	35	3	3	3	3	3	3	3
Mean age	882	884	883	878	884	891	885	897	921	901	920	925	936	930
Percent female	49%	49%	49%	49%	49%	48%	49%	50%	49%	49%	50%	50%	50%	49%

^*Institutions performing only post-mortem organ removal are not included