TABLE 4.

Adjusted MDI and PDI Scores by ARV Exposure Overall, by Birth Weight, and on the Basis of Separate Models for Each BSID Test Version

Characteristic	n	MDI		PDI
		Adjusted Meana	Pb	Adjusted Meana	Pb
Overall in utero ARV exposure			.07		.82
Not exposed	146	92.2		93.5
Exposed	1694	94.8		93.9
Model excluding adjustment for birth weight
Overall in utero ARV exposure			.07		.82
Not exposed	146	93.8		95.2
Exposed	1694	96.4		95.5
Model including interaction by birth weight
LBW (<2500 g)			.01		<.01
Not exposed	19	82.8		79.9
Exposed	274	92.8		92.3
Normal birth weight (≥2500 g)			.73		.76
Not exposed	127	95.9		97.8
Exposed	1420	97.3		96.3
Separate models for each BSID test version
BSID I			.31		.36
Not exposed	115	96.4		102.1
Exposed	334	98.4		100.0
BSID II			.13		.14
Not exposed	31	85.5		85.5
Exposed	1360	89.3		89.7

^aAdjusted for age, birth year, sex, race/ethnicity, type of caregiver, caregiver education level, primary language, birth weight (except where indicated), BSID test version (except in separate models by version), region of country, site size, and rural/urban site classification, all at the levels shown in Table 1.

^bFrom F test in multiple regression model, adjusting for all of the above covariates.