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Table 1 Selected demographics for the cohort consisting of 316 pregnant women enrolled between September 2009 and December 2010 from clinics in the New York City area

From: Predictors of serum concentrations of polybrominated flame retardants among healthy pregnant women in an urban environment: a cross-sectional study

Variable N (%)*
Race/ethnicity  
 African American 19 (6%)
 Non Hispanic White 84 (27%)
 Hispanic 211 (67%)
Maternal age (years, range) 29 (16 to 43)
Maternal education  
 Less than high school diploma 50 (16%)
 High school or equivalent 75 (24%)
 College 128 (44%)
 Graduate 50 (16%)
Prepregnancy BMI  
 Underweight (< 18.5) 19 (6%)
 Normal (18.5 to 24.9) 169 (55%)
 Overweight (25–29.9) 78 (25%)
 Obese (> 30) 42 (14$)
Household income  
 <$25,000 198 (63%)
 $25,000 – 50,000 34 (10%)
 >$50,000 84 (27%)
Multiparous 220 (70%)
  1. *Missing values for predictors: race/ethnicity (2), maternal education (3), prepregnancy BMI (8), parity (1).