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Preschool: First Findings From the Third Follow-up of the Early Childhood Longitudinal Study, Birth Cohort (ECLS-B)
NCES 2008-025
October 2007

Table 1.  Percentage distribution of children born in 2001, by child and family characteristics: 2005–06
Characteristic  Number of children (thousands) Percent of population  
Total  3,940 100.0
Child's sex 
Male  2,019 51.2
Female  1,921 48.8
Child's race/ethnicity1 
White, non-Hispanic  2,117 53.8
Black, non-Hispanic  544 13.8
Hispanic  985 25.1
Asian, non-Hispanic  101 2.6
American Indian and Alaska Native, non-Hispanic  19 0.5
Other, non-Hispanic  165 4.2
Singleton  3,808 96.8
Twin  119 3.0
Higher order (e.g., triplet)  7 #
Birth weight 
Normal birth weight (more than 5.5 pounds)  3,643 92.5
Moderately low birth weight (more than 3.3 to 5.5 pounds)  244 6.2
Very low birth weight (3.3 pounds or less)  50 1.3
Child's age (in months) at time of assessment 
Less than 48 months (less than 4 years old)  645 16.4
48 through 57 months (4 years old to 4 years, 9 months)  2,939 74.6
More than 57 months (older than 4 years, 9 months)  356 9.0
Family type, preschool round3 
Two parent  3,016 76.5
Single parent  860 21.8
Other  64 1.6
Mother's employment status, preschool round 
Full time (35 hours or more)  1,541 39.4
Part time (Less than 35 hours)  772 19.7
Looking for work  227 5.8
Not in labor force  1,344 34.3
No mother in household  30 0.8
# Rounds to zero.
1 Black, non-Hispanic includes African American. Hispanic includes Latino. Other, non-Hispanic includes Native Hawaiian/other Pacific Islanders and children of more than one race.
2 Plurality is divided into singletons (one baby), twins (two babies), and higher order births (three or more babies). Since higher order births comprise about 0.2 percent of the ECLS-B sample, estimates for higher order births are not presented in tables 3 through 7.
3 Two parent includes biological mother and biological father; biological mother and other father; biological father and other mother; and two adoptive parents. Single parent refers to biological mother only; biological father only; and single adoptive parent. Other refers to related and/or unrelated guardians.
NOTE: Estimates weighted by W3R0. Detail may not sum to totals because of rounding or missing data.
SOURCE: U.S. Department of Education, National Center for Education Statistics, Early Childhood Longitudinal Study, Birth Cohort (ECLS-B), Longitudinal 9-Month-Preschool Restricted-Use Data File (NCES 2008-024).
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