title: Data linkage between the National Birth Defects Prevention Study and the Occupational Information Network (O*NET) to assess workplace physical activity, sedentary behaviors, and emotional stressors during pregnancy.
abstract: BACKGROUND
  Knowledge of the prevalence of work-related physical activities, sedentary behaviors, and emotional stressors among pregnant women is limited, and the extent to which these exposures vary by maternal characteristics remains unclear.
  
  
  METHODS
  Data on mothers of 6,817 infants without major birth defects, with estimated delivery during 1997 through 2009 who worked during pregnancy were obtained from the National Birth Defects Prevention Study. Information on multiple domains of occupational exposures was gathered by linking mother's primary job to the Occupational Information Network Version 9.0.
  
  
  RESULTS
  The most frequent estimated physical activity associated with jobs during pregnancy was standing. Of 6,337 mothers, 31.0% reported jobs associated with standing for ≥75% of their time. There was significant variability in estimated occupational exposures by maternal age, race/ethnicity, and educational level.
  
  
  CONCLUSIONS
  Our findings augment existing literature on occupational physical activities, sedentary behaviors, emotional stressors, and occupational health disparities during pregnancy.
authors.affiliation: Department of Epidemiology, Human Genetics and Environmental Sciences, University of Texas School of Public Health, Southwest Center for Occupational and Environmental Health, Houston, Texas.
authors.forename: Laura J
authors.initials: LJ
authors.lastname: Lee
authors.affiliation: Department of Epidemiology, Human Genetics and Environmental Sciences, University of Texas School of Public Health, Southwest Center for Occupational and Environmental Health, Houston, Texas.
authors.forename: Elaine
authors.initials: E
authors.lastname: Symanski
authors.affiliation: Department of Pediatrics, Section of Hematology-Oncology, Baylor College of Medicine, Houston, Texas.
authors.forename: Philip J
authors.initials: PJ
authors.lastname: Lupo
authors.affiliation: National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia.
authors.forename: Sarah C
authors.initials: SC
authors.lastname: Tinker
authors.affiliation: National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia.
authors.forename: Hilda
authors.initials: H
authors.lastname: Razzaghi
authors.affiliation: Department of Epidemiology, Human Genetics and Environmental Sciences, University of Texas School of Public Health, Southwest Center for Occupational and Environmental Health, Houston, Texas.
authors.forename: Lisa A
authors.initials: LA
authors.lastname: Pompeii
authors.affiliation: Birth Defects Epidemiology and Surveillance Branch, Texas Department of State Health Services, Austin, Texas.
authors.forename: Adrienne T
authors.initials: AT
authors.lastname: Hoyt
authors.affiliation: Birth Defects Epidemiology and Surveillance Branch, Texas Department of State Health Services, Austin, Texas.
authors.forename: Mark A
authors.initials: MA
authors.lastname: Canfield
authors.affiliation: Department of Biostatistics, University of Texas School of Public Health, Houston, Texas.
authors.forename: Wenyaw
authors.initials: W
authors.lastname: Chan
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D015331:Cohort Studies; D005260:Female; D015438:Health Behavior; D006801:Humans; D007231:Infant, Newborn; D016247:Information Storage and Retrieval; D018811:Maternal Exposure / Q000009:adverse effects / Q000706:statistics & numerical data; D009043:Motor Activity; D009784:Occupational Diseases / Q000209:etiology* / Q000523:psychology; D016273:Occupational Exposure / Q000009:adverse effects / Q000706:statistics & numerical data; D011187:Posture; D011247:Pregnancy; D011248:Pregnancy Complications / Q000209:etiology* / Q000523:psychology; D012307:Risk Factors; D057185:Sedentary Behavior; D013315:Stress, Psychological / Q000209:etiology*; D014481:United States / Q000453:epidemiology; D017132:Workplace / Q000706:statistics & numerical data*; D055815:Young Adult
keywords: NBDPS; O*NET; exposure assessment; occupational physical activity; occupational stressors