TABLE 5.

Agreement between on-site replicate sample CD4 and CD8 counts^a

CD4 stratum and laboratory	CD4 count (cells/μl)						CD8 count (cells/μl)
	6 h			24 h			6 h			24 h
	10th	50th	90th	10th	50th	90th	10th	50th	90th	10th	50th	90th
All strata
All labs	−29	10b	72	−62	2	65	−120	23*	194	−206	−21*	140
A	−22	18*	72	−93	7	55	−75	59*	207	−379	−2	212
B	−59	−7*	69	−132	−33*	14	−304	−42*	193	−396	−140*	9
C	−10	9*	66	−41	2	111	−52	39*	257	−169	4	234
D	−25	14*	75	−5	20*	89	−142	−1	158	−106	11	103
E	−5	21*	74	−29	4	43	−49	32*	183	−107	−10*	110
<200
All labs	−15	5*	38	−35	1	38	−102	21*	202	−185	−4*	154
A	−14	11*	41	−156	10*	31	−66	63*	227	−972	44	246
B	−32	−1*	58	−48	−25*	3	−233	−33	205	−493	−142*	−49
C	−6	0	23	−20	−1	54	−20	39*	208	−159	20	208
D	−4	6*	36	−3	12*	52	−99	−4	183	−72	14	115
E	−5	9*	43	−14	6*	39	−57	23	189	−67	10	132
≥200
All labs	−50	24*	105	−92	6	101	−155	25*	182	−223	−38*	124
A	−27	24*	87	−71	2	73	−77	57*	201	−288	−23	172
B	−84	−15	112	−165	−58*	42	−325	−50*	156	−362	−136*	36
C	−31	26*	95	−64	34	149	−73	38*	240	−181	−26	312
D	−90	36*	100	−21	51*	132	−358	15	108	−158	−10	89
E	−7	32*	128	−46	2	48	−31	51*	170	−148	−45*	82

^aSee Table 4, footnote a. 

^b*, P < 0.05 for the estimated 50th percentile by the Wilcoxon signed-rank test.