Maternal persistent marijuana use and cigarette smoking are independently associated with shorter gestational age.
Nobutoshi NawaHenri M Garrison-DesanyYoona KimYuelong JiXiumei HongGuoying WangColleen PearsonBarry S ZuckermanXiaobin WangPamela J SurkanPublished in: Paediatric and perinatal epidemiology (2020)
In this high-risk US population, maternal marijuana use and cigarette smoking during pregnancy were independently associated with shorter gestational age. When we examined the effects on preterm birth subtypes, the elevated risk was only observed with spontaneous preterm birth.