Maternal cannabis use in pregnancy and child neurodevelopmental outcomes

Media reports:

https://www.insider.com/marijuana-use-in-pregnancy-linked-to...

https://medicalxpress.com/news/2020-08-cannabis-pregnancy-li...

https://www.nbcnews.com/health/kids-health/using-marijuana-p...

https://www.cnn.com/2020/08/10/health/weed-marijuana-pregnan...

"We find an association between maternal cannabis use in pregnancy and the incidence of autism spectrum disorder in the offspring. The incidence of autism spectrum disorder diagnosis was 4.00 per 1,000 person-years among children with exposure compared to 2.42 among unexposed children, and the fully adjusted hazard ratio was 1.51 (95% confidence interval: 1.17–1.96) in the matched cohort.

The incidence of intellectual disability and learning disorders was higher among offspring of mothers who use cannabis in pregnancy, although less statistically robust.

We emphasize a cautious interpretation of these findings given the likelihood of residual confounding."