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. Author manuscript; available in PMC: 2015 Nov 1.
Published in final edited form as: Acad Pediatr. 2014 Oct 30;14(6):581–588. doi: 10.1016/j.acap.2014.03.014

Figure 1. Percentage of nine month old infants with cognitive delay by number of social risk factors, national estimates from the 2001 ECLS-B.

Figure 1

Figure 1 presents the unadjusted prevalence of cognitive delay at nine-months of age (y-axis), by the number social risk factors (x-axis). Social risk factors include: family income below 100% of the Federal poverty level, single-parent household status, maternal black (non-Hispanic) race, maternal education less than high school, and three or more children other than the index child living in the household. Prevalence estimates account for the complex sampling design of the ECLS-B.