TABLE 8.
Logistic Regression Models Testing Effects of Chlorpyrifos on the Odds of Behavioral Disorder at 36 Months, Adjusted for Race, Gender, Gestational Age, Maternal Education, Maternal IQ, ETS Exposure, and Home Environment (N = 228)
| Variable | Odds Ratio (95% CI) | ||
|---|---|---|---|
| Attention Problems | ADHD Problems | PDD Problems | |
| Prenatal exposures | |||
| ETSa | 2.81 (0.44–17.77) | 8.10 (1.20–54.65) | 0.75 (0.17–3.41) |
| Chlorpyrifosb | 11.26 (1.79–70.99) | 6.50 (1.09–38.69) | 5.39 (1.21–24.11) |
| Covariates | |||
| Race/ethnicityc | 0.19 (0.02–1.61) | 0.26 (0.04–1.82) | 0.06 (0.01–0.65) |
| Genderd | 2.84 (0.50–16.09) | 1.05 (0.23–4.74) | 2.40 (0.65–8.93) |
| Gestational age | 0.62 (0.39–0.99) | 0.62 (0.40–0.97) | 0.81 (0.50–1.30) |
| Maternal IQe | 0.99 (0.94–1.06) | 1.03 (0.97–1.09) | 1.00 (0.95–1.05) |
| Maternal educationf | 0.22 (0.02–2.08) | 0.35 (0.06–2.10) | 1.75 (0.46–6.61) |
| HOME score | 0.93 (0.80–1.08) | 0.88 (0.77–1.01) | 0.93 (0.82–1.05) |
a
Prenatally exposed = 1; not exposed = 0.
b
High exposure (>6.17 pg/g) = 1; low exposure (≤6.17 pg/g) = 0.
c
Black = 2; Dominican = 1.
d
Male = 2; female = 1.
e
Measured with the Test of Nonverbal Intelligence, Second Edition,42 natural logarithmically transformed.
f
No high school degree = 1; high school degree = 0.