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Table 1 Characteristics for the ECLS-B sample and the sample for the present study

From: The role of length of maternity leave in supporting mother–child interactions and attachment security among American mothers and their infants

Characteristics Total ECLS-B % Working mother %
Child’s gender
 Male 51.2 51.9
 Female 48.8 48.1
Mother’s ethnicity
 White 53.7 55.7
 African American or black 13.7 14.5
 Hispanic white 6.6 14.6
 Hispanic non-white 8.7 7.5
Asian 2.7  
 Pacific Islander .2 .2
 Native American .5 .4
 More than 1 race (not Hispanic) 3.9 4.3
Mother’s marital status
 Married 67.3 67.9
 Unmarried 32.7 32.1
Maternal employment status
 Working 52.7 100
 Not working 47.2  
N 10,700a 3850a
  1. Data from ECLS-B restricted-use data file. Weighted frequencies are representative of the children born in the U.S. in the year 2001
  2. aSamples sizes are rounded to the nearest 50, consistent with the requirements of the National Center for Education Statistics