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. Author manuscript; available in PMC: 2015 May 12.
Published in final edited form as: Dev Psychol. 2011 Mar;47(2):388–395. doi: 10.1037/a0021066

Table 1.

Family demographic information

Variable 7 Months (N = 717) 24 Months (N = 579)
State (% NC)1 48.5% 46.8%
Mother age (in years) 28.0 (5.55) 29.6 (5.32)
Father age (in years) 30.6 (6.4) 32.1 (6.5)
Child age (in months) 7.35 (1.33) 24.61 (1.63)
Income-to-needs ratio 2.39 (1.85) 2.34 (1.69)
Mother education (in years) 13.2 (2.1) 13.4 (2.1)
Father education (in years) 12.9 (2.2) 13.1 (2.2)
Child sex (% female) 49.0% 49.9%
Child ethnicity/race
 African American 25.8% 24.7%
 European American 74.2% 75.3%
 Other2 0.0% 0.0%

Note:

1

As compared to PA.

2

The “other” ethnicities at 7 months included one Native American, one Guamanian, and one Vietnamese child. The “other” ethnicities at 24 months included only one Vietnamese child.