title: Prepregnancy obesity prevalence in the United States, 2004-2005.
abstract: OBJECTIVE
  To provide a current estimate of the prevalence of prepregnancy obesity in the United States.
  
  
  METHODS
  We analyzed 2004-2005 data from 26 states and New York City (n = 75,403 women) participating in the Pregnancy Risk Assessment Monitoring System, an ongoing, population-based surveillance system that collects information on maternal behaviors associated with pregnancy. Information was obtained from questionnaires self-administered after delivery or from linked birth certificates; prepregnancy body mass index was based on self-reported weight and height. Data were weighted to provide representative estimates of all women delivering a live birth in each particular state.
  
  
  RESULTS
  In this study, about one in five women who delivered were obese; in some state, race/ethnicity, and Medicaid status subgroups, the prevalence was as high as one-third. State-specific prevalence varied widely and ranged from 13.9 to 25.1%. Black women had an obesity prevalence about 70% higher than white and Hispanic women (black: 29.1%; white: 17.4%; Hispanic: 17.4%); however, these race-specific rates varied notably by location. Obesity prevalence was 50% higher among women whose delivery was paid for by Medicaid than by other means (e.g., private insurance, cash, HMO).
  
  
  CONCLUSIONS
  This prevalence makes maternal obesity and its resulting maternal morbidities (e.g., gestational diabetes mellitus) a common risk factor for a complicated pregnancy.
authors.affiliation: Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA 30341, USA. syc1@cdc.gov
authors.forename: Susan Y
authors.initials: SY
authors.lastname: Chu
authors.forename: Shin Y
authors.initials: SY
authors.lastname: Kim
authors.forename: Connie L
authors.initials: CL
authors.lastname: Bish
mesh_terms: D000328:Adult; D015992:Body Mass Index; D005260:Female; D006801:Humans; D009765:Obesity / Q000150:complications / Q000453:epidemiology* / Q000208:ethnology; D011159:Population Surveillance; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology* / Q000208:ethnology / Q000209:etiology; D011256:Pregnancy Outcome / Q000453:epidemiology / Q000208:ethnology; D015995:Prevalence; D012307:Risk Factors; D012959:Socioeconomic Factors; D014481:United States / Q000453:epidemiology; D055815:Young Adult