Transplant Statistics: Annual Report

Blood Type		Year of Waiting List Registration
		1993	1994	1995	1996	1997	1998	1999	2000
O	Number of Registrations	22	30	34	38	64	76	84	86
	10th Percentile of TT (Days)	39	87	14	50	32	13	27	41
	25th Percentile of TT (Days)	184	387	116	232	99	80	75	122
	Median TT (Days)	+	+	467	+	377	440	226	343
	Median TT 95% C.I. Lower Bound	+	+	267	+	221	162	130	221
	Median TT 95% C.I. Upper Bound	+	+	+	+	+	+	319	+
A	Number of Registrations	23	33	40	34	47	59	44	52
	10th Percentile of TT (Days)	24	27	31	21	20	4	50	19
	25th Percentile of TT (Days)	38	150	132	44	52	55	186	51
	Median TT (Days)	863	551	464	163	793	165	+	201
	Median TT 95% C.I. Lower Bound	95	163	263	89	125	121	+	117
	Median TT 95% C.I. Upper Bound	+	+	+	339	+	+	+	+
B	Number of Registrations	10	16	16	9	14	13	17	25
	10th Percentile of TT (Days)	243	6	13	*	8	16	35	24
	25th Percentile of TT (Days)	1,033	160	114	*	+	122	192	92
	Median TT (Days)	+	+	+	*	+	+	+	+
	Median TT 95% C.I. Lower Bound	+	+	+	*	+	+	+	+
	Median TT 95% C.I. Upper Bound	+	+	+	*	+	+	+	+
AB	Number of Registrations	4	5	2	7	10	4	5	8
	10th Percentile of TT (Days)	*	*	*	*	6	*	*	*
	25th Percentile of TT (Days)	*	*	*	*	69	*	*	*
	Median TT (Days)	*	*	*	*	113	*	*	*
	Median TT 95% C.I. Lower Bound	*	*	*	*	69	*	*	*
	Median TT 95% C.I. Upper Bound	*	*	*	*	+	*	*	*

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.

The Intestine waiting list began in 1993.

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.