בשל "הגנת זכויות יוצרים" מובא להלן קישור לתקציר המאמר. לקריאתו בטקסט מלא, אנא פנה/י לספרייה הרפואית הזמינה לך. 

To study the association between nicotine or cannabis metabolite presence in maternal urine and child neurodevelopmental outcomes.

We conducted a secondary analysis of two parallel multicenter randomized controlled trials of treatment for hypothyroxinemia or subclinical hypothyroidism among pregnant individuals enrolled at 8–20 weeks of gestation.

All maternal–child dyads with a maternal urine sample at enrollment and child neurodevelopmental testing were included (N=1,197). Exposure was urine samples positive for nicotine (cotinine) or cannabis 11-nor-9-carboxy-delta-9-tetrahydrocannabinol [THC-COOH]) or both metabolites.

Primary outcome was child IQ at 60 months. Secondary outcomes included cognitive, motor and language, attention, behavioral and social competency, and differential skills assessments at 12, 24, 36, and 48 months.

Quantile regression analysis was performed with confounder adjustment.