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Table 4 Odds ratios and 95% confidence intervals for the association between GWG and autism in different maternal pre-pregnancy BMI categories

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

Underweighta

 Inadequate weight gain

1.164

0.726–1.866

0.530

 Excessive weight gain

1.016

0.502–2.055

0.965

Normala

 Inadequate weight gain

0.784

0.609–1.010

0.059

 Excessive weight gain

1.289

0.947–1.754

0.107

Overweight/Obesea

 Inadequate weight gain

0.548

0.193–1.559

0.260

 Excessive weight gain

2.468

1.102–5.526

0.028

  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. aAdequate weight gain group was used as a reference