Table 2

Age-adjusted associations of breastfeeding and autistic disorder for children aged 2–18 years.

Variable
Odds Ratio
(95% Confidence Interval)
p value

No Breastfeeding
2.48
(1.42 – 4.35)
0.001
Breastfeeding <2 months
1.70
(1.00 – 2.88)
0.050
Breastfeeding 2–6 months
1.27
(0.75 – 2.14)
0.373
Breastfeeding >6 months
reference


Limited to cases with reported regression in development
No Breastfeeding
1.95
(1.01 – 3.78)
0.048
Breastfeeding <2 months
1.84
(0.98 – 3.44)
0.057
Breastfeeding 2–6 months
1.59
(0.86 – 2.96)
0.141
Breastfeeding >6 months
reference



Schultz et al. International Breastfeeding Journal 2006 1:16   doi:10.1186/1746-4358-1-16