Transplant Statistics: Annual Report

Blood Type		Year of Waiting List Registration
		1991	1992	1993	1994	1995	1996	1997	1998	1999	2000
O	Number of Registrations	6,596	7,293	7,688	7,936	8,535	8,849	9,171	9,744	9,997	10,782
	10th Percentile of TT (Days)	78	84	113	101	104	110	125	128	140	140
	25th Percentile of TT (Days)	226	274	316	294	294	331	349	392	422	452
	Median TT (Days)	689	811	928	942	1,001	1,186	1,248	+	+	+
	Median TT 95% C.I. Lower Bound	654	777	887	889	946	1,128	1,198	+	+	+
	Median TT 95% C.I. Upper Bound	727	847	980	996	1,065	1,239	1,333	+	+	+
A	Number of Registrations	4,720	5,227	5,586	5,651	6,087	6,202	6,494	6,728	7,187	7,361
	10th Percentile of TT (Days)	35	51	60	59	59	58	66	71	80	93
	25th Percentile of TT (Days)	102	144	167	170	169	174	187	200	232	245
	Median TT (Days)	317	405	484	486	520	550	592	701	786	+
	Median TT 95% C.I. Lower Bound	302	387	461	463	493	525	562	662	736	+
	Median TT 95% C.I. Upper Bound	338	422	511	512	549	580	623	742	849	+
B	Number of Registrations	1,904	2,119	2,210	2,310	2,591	2,578	2,670	2,913	2,964	3,285
	10th Percentile of TT (Days)	102	138	143	136	127	168	139	145	171	154
	25th Percentile of TT (Days)	285	428	410	404	401	518	426	470	515	+
	Median TT (Days)	857	1,150	1,268	1,275	1,293	1,533	1,501	+	+	+
	Median TT 95% C.I. Lower Bound	801	1,040	1,163	1,189	1,198	1,424	1,343	+	+	+
	Median TT 95% C.I. Upper Bound	951	1,306	1,374	1,436	1,402	1,697	+	+	+	+
AB	Number of Registrations	500	585	603	640	681	694	728	804	841	843
	10th Percentile of TT (Days)	18	18	34	34	41	27	43	61	48	62
	25th Percentile of TT (Days)	56	59	103	97	105	86	108	143	151	170
	Median TT (Days)	157	192	256	255	266	316	350	395	392	525
	Median TT 95% C.I. Lower Bound	140	162	230	231	233	252	305	350	348	411
	Median TT 95% C.I. Upper Bound	194	239	294	293	317	398	404	426	465	+

Source: OPTN/SRTR Data as of August 1, 2001.

(*) = Not determined due to small cell N (0 to 9).

(+) = Not determined due to insufficient follow-up; fewer than this percentile have transplanted.

TT = Time to Transplant in days.

This table takes a cohort of waiting list registrations and shows how long it takes for 10%, 25%, and 50% (the median) of those patients to be transplanted. These tables take the point of view of a patient who has just been registered on a waiting list and take into account all of the things that can happen to the patient after wait listing, including receiving a transplant, being removed from the waiting list, and dying.

See Technical Notes chapter for a full discussion of the methods used for this table.