. Author manuscript; available in PMC: 2010 Dec 1.

Published in final edited form as: J Acquir Immune Defic Syndr. 2009 Dec;52(5):636–642. doi: 10.1097/QAI.0b013e3181b32646

Table 3.

Differences in mean cognitive and motor development growth curves of HIV-infected children (cohort 1), HIV-uninfected affected children (cohort 2), and control children (cohort 3).

	P-values^* for Cohort Differences
	Cohort 1 vs.2 vs.3	Cohort 1 vs. 3	Cohort 2 vs. 3	Cohort 1 vs. 2
Cognitive development
Hypothesis: Same growth curve	< 0.0001	< 0.0010	0.0034	0.0383
Hypothesis: Same shape of growth curve	0.0969	ns ^#	ns	Ns
Motor development
Hypothesis: Same growth curve	< 0.0001	< 0.0001	< 0.0001	0.0014
Hypothesis: Same shape of growth curve	0.0370	0.0187	0.7067	0.0223

Model-based p-value for the F-test of the indicated null hypothesis. Type I error controlled by hierarchical testing. P-values significant at 0.05 level.

“ns” indicates a non-significant result due to a preceding non-significant test in the hierarchical sequence of hypothesis testing