Evidence map›Paper›PMID 27919059›Full record

ArticleOccupational and environmental medicine2017

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

Laura J Lee, Elaine Symanski, Philip J Lupo, Sarah C Tinker, Hilda Razzaghi, Wenyaw Chan, Adrienne T Hoyt, Mark A Canfield, National Birth Defects Prevention Study

Open access · greenAbstract read
In one paragraph

Article in Occupational and environmental medicine, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 2 pooled it
3.3field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 2 syntheses or guidelines pooled it, 34 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Physical Activity and Pregnancy Norms Among Daasanach Semi-Nomadic Pastoralist Women in Northern Kenya.American journal of human biology : the official journal of the Human Biology Council · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 6 institutions in 1 country.

Laura J LeeDepartment of Epidemiology, Human Genetics and Environmental Sciences, University of Texas Health Science Center at Houston (UTHealth) School of Public Health, Houston, Texas, USA.
Elaine SymanskiDepartment of Epidemiology, Human Genetics and Environmental Sciences, University of Texas Health Science Center at Houston (UTHealth) School of Public Health, Houston, Texas, USA.
Philip J LupoDepartment of Pediatrics, Section of Hematology-Oncology, Baylor College of Medicine, Houston, Texas, USA.
Sarah C TinkerNational Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia, USA.
Hilda RazzaghiNational Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia, USA.
Wenyaw ChanDepartment of Biostatistics, UTHealth School of Public Health, Houston, Texas, USA.
Adrienne T HoytBirth Defects Epidemiology and Surveillance Branch, Texas Department of State Health Services, Austin, Texas, USA.
Mark A CanfieldBirth Defects Epidemiology and Surveillance Branch, Texas Department of State Health Services, Austin, Texas, USA.
National Birth Defects Prevention Study
Texas Department of State Health Services · USThe University of Texas Health Science Center at Houston · USBaylor College of Medicine · USCenters for Disease Control and Prevention · USNational Center on Birth Defects and Developmental Disabilities · USSouthwest Center for Educational Excellence · US

Funding

Southwest Center for Occupational and Environmental HealthT42OH008421 · OH · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI FELKNOR, SARAH A. · 2005 to 2024
$24.1M
Texas Center for Birth Defects Research and PreventionU01DD000494 · DD · TEXAS STATE DEPT OF HEALTH SERVICES · PI CANFIELD, MARK A · 2009 to 2013
$3.9M
ACL HHS T42OH008421Intramural CDC HHS CC999999NCBDD CDC HHS U01 DD000494NIOSH CDC HHS T42 OH008421
6 · The paper itself

Abstract

objectivesWe 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).

methodsData 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.

resultsFactor 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.

conclusionsOur 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.

Indexed as

ExerciseInfant, Small for Gestational AgeStress, PsychologicalAdultCase-Control StudiesFactor Analysis, StatisticalFemaleHumansMaternal ExposureOccupational DiseasesPremature BirthRisk FactorsUnited StatesWomen, WorkingWorkloadYoung Adultphysical activityPreterm birthpsychosocial stressorsSmall-for-gestational age

Identifiers

PMID27919059
PMCPMC5394923
OpenAlexW2528725550

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.