CI, confidence interval.
a  Model included mother’s age, season of birth, year of birth, breast-feeding duration, sex, socioeconomic status of the caregiver, tobacco use during pregnancy, village of residence, and number of children living with the participant.
b  Incidence RR when the given quartile was compared to the first quartile of exposure (Poisson regression).
c  p-Values for trends were calculated by Poisson regression in which the contaminant concentration (lipid-based) was entered as a continuous variable (log-transformed).
d  Only infections with a mean incidence > 1.0 episode/year/infant were included; see details in “Materials and Methods”).
*  p < 0.05.