Skip to main content

Table 5 Adjusted regression coefficients (95% confidence interval), from linear mixed models, including exam time specific associations

From: Maternal methylmercury exposure through rice ingestion and child neurodevelopment in the first three years: a prospective cohort study in rural China

  

Time Specific Associations

All observationsa (n = 454)

12 months (n = 264)

36 months (n = 190)

Interaction term p-value

MDI

Log2 Hair THg (β)

−1.3 (−2.6, −0.14)*

− 1.7 (−3.1, − 0.26)*

−0.77 (− 2.5, 1.0)

0.39

PDI

Log2 Hair THg (β)

−1.2 (− 2.6, 0.14)

−1.2 (− 2.9, 0.43)

−1.2 (− 3.5, 1.0)

0.99

  1. *p < 0.05, p-values are for the Beta coefficients
  2. MDI Mental Developmental Index, PDI Psychomotor Developmental Index, THg total mercury
  3. Note: All estimates are from models that were adjusted for maternal age (years), maternal fish consumption (0 servings/weekly, 0 < servings/weekly< 2 servings/weekly, or ≥ 2 servings/weekly), maternal rice consumption (<daily, or ≥ daily), maternal serum zinc (μg/L), log2 maternal blood lead (μg/dL), log2 maternal energy intake (kcal), pre-pregnancy body mass index (underweight, normal weight, or overweight/obese), maternal education completed (<high school, high school, or some university), child sex, birth weight-for-gestational age (z-score), child’s primary caregiver (3 categories: mother, father, or grandparent), the difference in child’s age between the targeted age and actual age at testing (months), a categorical variable for exam time (12 or 36 months), and the interaction between THg and exam time
  4. aThis model does not include the interaction of THg with exam time
Back to article page

Environmental Health

ISSN: 1476-069X