Table 2.

CD4 T-cell counts (per µl) among children aged 6 weeks to 24 months, stratified by child HIV status

Child age (weeks)	HIV-infected						HIV-uninfected						pa
	N	Mean	SD	Median	Fifth percentile	Ninety-fifth percentile	N	Mean	SD	Median	Fifth percentile	Ninety-fifth percentile
14	41	1355	561	1350	560	2370	291	1635	575	1597	834	2610	0.002
26	47	1345	687	1203	500	2540	312	1801	625	1736	1034	3060	<.0001
38	19	1324	609	1030	490	2640	201	1654	511	1640	875	2460	0.02
50	36	1179	478	1172	210	1877	294	1864	787	1752	850	3340	<.0001

^aP-values calculated with Wilcoxon-rank sum test.