. Author manuscript; available in PMC: 2009 Mar 1.

Published in final edited form as: Neurotoxicology. 2007 Dec 15;29(2):278–285. doi: 10.1016/j.neuro.2007.11.006

Table 3.

Relationship between childhood blood lead and Mental Development Index and Psychomotor Development Index scales using repeated measures at 24, 30 and 36 stratified by Coopersmith self-esteem score

	Mental Development Index			Psychomotor Development Index
	β (SE) p-value		p-value for interaction	β (SE) p-value		p-value for interaction
	Lowest three quartiles self-esteem	Highest quartile self-esteem		Lowest three quartiles self-esteem	Highest quartile self-esteem
Child blood	−0.31 (0.15)	0.36 (0.44)	0.11	−0.25 (0.15)	0.49 (0.40)	0.21
lead	p=0.04	p=0.42		p=0.10	p=0.23
(24 mo)
μg/dL

Models are adjusted for cohort, child gender, mothers IQ, and mother's educational attainment, parity, smoking, alcohol consumption, and self-esteem as a continuous variable.