title: Recent trends in treatment admissions for marijuana use during pregnancy.
abstract: OBJECTIVE
  The objective of this study was to investigate recent trends in substance abuse treatment admissions for marijuana use during pregnancy in the United States.
  
  
  METHODS
  Data were obtained from the Treatment Episodes Data Set from 1992 to 2012 and analyzed for trends over time using χ, Cochran-Armitage, and Moran's I tests.
  
  
  RESULTS
  The proportion of treatment admissions for women who were pregnant remained stable at 4%; however, admissions of pregnant women reporting any marijuana use increased substantially from 29% to 43% (P < 0.01). The West North Central census division (20%) experienced the greatest increase followed by the Middle Atlantic (18%) and Pacific (14%) divisions. The demographic characteristics of pregnant marijuana admissions changed over time, with white non-Hispanic women, criminal justice referrals, and those with a psychiatric comorbidity becoming more common whereas polysubstance users decreased (P < 0.01).
  
  
  CONCLUSIONS
  Even though more women using marijuana are seeking and receiving substance abuse treatment during pregnancy, targeting certain risk groups while improving screening and treatment referral systems by health care providers, such as prenatal caregivers, should be emphasized.
authors.affiliation: From the Department of Obstetrics and Gynecology (CEM), University of North Carolina Hospitals, Chapel Hill, NC; Department of Epidemiology and Public Health (NL, MT), University of Maryland, Baltimore, MD; Department Obstetrics, Gynecology and Reproductive Sciences (KM), University of Maryland School of Medicine, Baltimore, MD; Department of Psychiatry and Behavioral Sciences (MSC), Johns Hopkins University School of Medicine, Baltimore, MD; and Behavioral Health System Baltimore (MT), Baltimore, MD.
authors.forename: Caitlin E
authors.initials: CE
authors.lastname: Martin
authors.forename: Nyaradzo
authors.initials: N
authors.lastname: Longinaker
authors.forename: Katrina
authors.initials: K
authors.lastname: Mark
authors.forename: Margaret S
authors.initials: MS
authors.lastname: Chisolm
authors.forename: Mishka
authors.initials: M
authors.lastname: Terplan
mesh_terms: D000328:Adult; D005260:Female; D006760:Hospitalization / Q000706:statistics & numerical data* / Q000639:trends*; D006801:Humans; D008385:Marijuana Smoking / Q000453:epidemiology*; D011247:Pregnancy; D015995:Prevalence; D014481:United States / Q000453:epidemiology; D055815:Young Adult