Early prediction of median survival among a large AIDS surveillance cohort

BMC Public Health

Table 2 Predicted versus True 0.50 Quantiles using the 0.15 Quantile as a Predictor Variable.

	Data as of December 31, 1996					Data as of December 31, 2001
		Observed Quantiles
Cohort	n	largest follow-up time (months)	0.15 (A)	0.50 (B)	Predicted 0.50 Quantile† (C)	largest follow-up time (months)	"True" 0.15 Quantile§ (D)	True 0.50 Quantile‡ (E)	Difference (C – E)
831	140	167	2	12	16	227	2	12	4
832	154	164	2	11	16	224	1	11	5
833	204	161	1	10	13	221	1	10	3
834	205	158	1	10	13	218	1	11	2
841	277	155	2	10	16	215	1	10	6
842	315	152	1	9	13	212	1	11	2
843	397	149	2	12	16	209	1	11	5
844	418	146	2	10	16	206	1	9	7
851	531	143	1	10	13	203	1	10	3
852	624	140	1	10	13	200	1	10	3
853	718	137	1	11	13	197	1	10	3
854	689	134	1	11	13	194	1	10	3
861	876	131	1	10	13	191	1	10	3
862	955	128	1	10	13	188	1	10	3
863	1113	125	1	11	13	185	1	11	2
864	1110	122	1	14	13	182	1	15	-2
871	1316	119	1	15	13	179	1	14	-1
872	1474	116	1	16	13	176	1	15	-2
873	1484	113	1	17	13	173	2	17	-4
874	1425	110	2	17	16	170	2	17	-1
881	1649	107	2	18	16	167	2	18	-2
882	1658	104	2	19	16	164	3	19	-3
883	1759	101	2	18	16	161	2	18	-2
884	1693	98	1	18	13	158	1	18	-5
891	1930	95	2	19	16	155	2	18	-2
892	2187	92	2	20	16	152	2	19	-3
893	2047	89	3	20	18	149	3	21	-3
894	1997	86	2	19	16	146	2	18	-2
901	2265	83	2	21	16	143	3	22	-6
902	2243	80	3	21	18	140	4	22	-4
903	2285	77	3	19	18	137	3	20	-2
904	2139	74	3	20	18	134	3	20	-2
911	2611	71	5	21	23	131	5	22	1
912	2543	68	4	23	21	128	4	23	-2
913	2845	65	4	23	21	125	4	23	-2
914	2930	62	5	24	23	122	5	24	-1
921	3227	59	7	27	29	119	8	27	2
922	2920	56	7	28	29	116	7	28	1
923	2971	53	7	28	29	113	7	27	2
924	3061	50	7	30	29	110	7	29	0
931	3264	47	9	32	34	107	9	31	3
932	2903	44	8	32	31	104	8	32	-1
933	2788	41	9	*	34	101	9	32	2
934	2624	38	9	*	34	98	9	40	-6
941	2766	35	8	*	31	95	9	46	-15
942	2518	32	7	*	29	92	8	80	-51
943	2335	29	9	*	34	89	9	*
944	2203	26	9	*	34	86	8	*
951	2451	23	10	*	37	83	9	*
952	2245	20	11	*	39	80	10	*
953	1949	17	8	*	31	77	9	*
954	1860	14	10	*	37	74	9	*
961	1894	11	*	*	*	71	12	*
962	1488	8	5	*	23	68	16	*
963	1225	5	*	*	*	65	16	*
964	475	2	*	*	*	62	9	*

ISSN: 1471-2458