Table 3 Estimation by multiple imputation of the association between history of otitis media in the first year in children and maternal insecticide use from conception to the first (upper) and the second/third (lower) trimesters.

From: Association between maternal insecticide use and otitis media in one-year-old children in the Japan Environment and Children’s Study

 

Adjusted OR

95% C.I

p value

Usage of insecticide by the mother from conception to the first trimester (n = 57,886)

Never

Reference

  

1 to 3 times per month

1.01

0.91–1.12

0.89

More than once a week

1.29

1.03–1.62

0.03

Usage of insecticide by the mother from conception to the second/third trimester (n = 61,580)

Never (%)

Reference

  

1 to 3 times per month (%)

1.07

0.98–1.16

0.13

More than once a week (%)

0.95

0.78–1.16

0.62

  1. OR odds ratio, 95% C.I. 95% confidence interval.
  2. These analyses were adjusted for sex, exclusive breastfeeding for the first 6 months, maternal age, gestational age, birth weight, living with siblings at 6 months, daycare attendance, maternal history of chronic otitis media, Hib vaccination, pneumococcal vaccination, maternal and paternal smoking history, exposure to secondhand smoke, diagnosis of trisomy 21, fertility treatment, family member’s smoking status, and maternal occupational category.
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