Role of maternal occupational physical activity and psychosocial stressors on adverse birth outcomes

Details

• Alternative Title:
  Occup Environ Med
• Personal Author:
  Lee, Laura J ; Symanski, Elaine ; Lupo, Philip J ; Tinker, Sarah C ; Razzaghi, Hilda ; Chan, Wenyaw ; Hoyt, Adrienne T ; Canfield, Mark A
• Corporate Authors:
  National Birth Defects Prevention Study
• Description:
  Objectives
  
  We examined the association of an array of estimated maternal occupational physical activities and psychosocial stressors during pregnancy with odds for preterm birth (PTB) and small-for-gestational age (SGA).
  
  Methods
  
  Data for infants born without major birth defects delivered from 1997 to 2009 whose mothers reported working at least 1 month during pregnancy were obtained from the National Birth Defects Prevention Study. We linked occupational codes to the US Department of Labor’s Occupational Information Network, which provides estimates of exposure for multiple domains of physical activity and psychosocial stressors by occupational categories. We conducted factor analysis using principal components extraction with 17 occupational activities and calculated factor scores. ORs for PTB and SGA across quartiles of factor scores in each trimester were computed using logistic regression.
  
  Results
  
  Factor analysis grouped occupational domains into 4 groups based on factor loadings. These groups were ‘occupational physical activity’, ‘interpersonal stressor’, ‘automated work’ and ‘job responsibility’. High levels of ‘occupational physical activity’ were significantly associated with SGA (adjusted OR (AOR) for highest quartile compared with lowest quartile of factor score: 1.36; 95% CIs 1.02 to 1.82; p for trend=0.001) and were also positively associated with PTB (AOR: 1.24; 95% CI 0.93 to 1.64; p for trend=0.01). No clear results were observed across domains of psychosocial stressors.
  
  Conclusions
  
  Our findings expand understanding of associations between occupational physical activity and psychosocial stressors and PTB and SGA and suggest that additional research is needed to further examine these relationships.
  
  
• Keywords:
  Adult Case-Control Studies Exercise Factor Analysis, Statistical Female Humans Infant, Small For Gestational Age Maternal Exposure Occupational Diseases Premature Birth Risk Factors Stress, Psychological United States Women, Working Workload Young Adult

  More +
• Source:
  Occup Environ Med. 74(3):192-199
• Pubmed ID:
  27919059
• Pubmed Central ID:
  PMC5394923
• Document Type:
  Journal Article
• Funding:
  CC999999/ImCDC/Intramural CDC HHSUnited States/ ; T42 OH008421/OH/NIOSH CDC HHSUnited States/ ; T42OH008421/ACL/ACL HHSUnited States/ ; U01 DD000494/DD/NCBDD CDC HHSUnited States/
• Volume:
  74
• Issue:
  3
• Collection(s):
  CDC Public Access
• Main Document Checksum:
  urn:sha256:478e5065678539d8670b7d33954394d2900f57743ddf0598e479605b9b6c1ff8
• Download URL:
  https://stacks.cdc.gov/view/cdc/45229/cdc_45229_DS1.pdf
• File Type:
  [PDF - 360.48 KB ]