In the National Survey of Drug Use and Health, the adjusted prevalence of past 30-day cannabis use in pregnant women aged 18 to 44 years rose from 2.37% in 2002 to 3.85% in 2014.1 Another study found a relatively similar increase from 4.2% in 2009 to 7.1% in 2014.2 Corresponding rates of alcohol use (eg, 11.2% from 2001-2005 vs 10.2% from 2011-2013) and cigarette smoking (eg, 13.3% in 2002 vs 12.3% in 2010) during pregnancy have generally decreased.3-5 These reports encourage more detailed characterization of patterns of substance use during the course of pregnancy.
Agrawal A, Rogers CE, Lessov-Schlaggar CN, Carter EB, Lenze SN, Grucza RA. Alcohol, Cigarette, and Cannabis Use Between 2002 and 2016 in Pregnant Women From a Nationally Representative Sample. JAMA Pediatr. Published online November 05, 2018. doi:10.1001/jamapediatrics.2018.3096
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