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Table 1 Characteristics of Sample (N = 350)

From: Impact of low-level gestational exposure to organophosphate pesticides on neurobehavior in early infancy: a prospective study

Maternal characteristics Frequency (percent)
Maternal age at delivery (years) a 30 (5.7)
Race  
White, non-Hispanic 223 (64%)
Black, non-Hispanic 104 (30%)
Other 23 (6%)
Marital status  
Married 235 (67%)
Not married, living with someone 48 (14%)
Not married, living alone 67 (19%)
Household income ($) b 55 K (27 K – 85 K)
Employed 288 (82%)
Education  
<= HS or GED 74 (21%)
Some college or college graduate 91 (26%)
College graduate 107 (31%)
Graduate or professional school 78 (22%)
Moderate to severe depression  
(BDI-II > 13 at Baseline or 5-wk post-partum) 89 (25%)
Maternal BMI a 27.5 (6.8)
Weight gain during pregnancy a (lbs/week) 1.2 (0.5)
Alcohol use during pregnancy  
Never drank alcohol during pregnancy 193 (55%)
Drank <1 alcoholic drink per month 106 (30%)
Drank >1 alcoholic drink per month 51 (15%)
Marijuana use during pregnancy 23 (6%)
Max blood lead (microg/dL) c 0.82 (0.79 – 0.86)
Max serum cotinine (ng/mL) c 0.095 (0.072 – 0.12)
Reported Active smoking during pregnancy 39 (11%)
Folate (total whole blood folate, nmol/L) c 410.8 (117.9–1431.7)
Fresh fruit and vegetable consumption during pregnancy  
≥ daily 215 (61%)
< daily 135 (39%)
Any organic fruit and vegetable consumption 162 (46%)
Infant characteristics  
Male 163 (46%)
Gestational age (weeks) a 39 (1.7)
Birthweight (grams) a 3391 (615)
Age at 5-week NNNS exam (days) 34 (5)
Birth order  
First child 153 (44%)
Second child 114 (32%)
> Second child 83 (24%)
  1. a Mean (SD), b Median (25th, 75th percentile) or c Geometric Mean (95% confidence interval).