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Table 3 Odds ratios and 95% confidence intervals for the association among maternal pre-pregnancy BMI, GWG and autism in all subjects

From: Associations among maternal pre-pregnancy body mass index, gestational weight gain and risk of autism in the Han Chinese population

  OR 95% CI p
Maternal pre-pregnancy BMIa
 Underweight 0.958 0.746–1.231 0.738
 Overweight/Obese 0.743 0.515–1.073 0.113
Gestational weight gainb
 Inadequate weight gain 0.855 0.690–1.060 0.154
 Excessive weight gain 1.327 1.021–1.725 0.034
BMI by GWG 1.064 1.009–1.123 0.023
  1. BMI body mass index, GWG gestation weight gain
  2. Child’s gender, child age, parental age, and family annual income were used as covariates
  3. aNormal BMI group was used as a reference
  4. bAdequate weight gain group was used as a reference