title: Length of time spent working on a commercial construction site and the associations with worker characteristics.
abstract: BACKGROUND
  Construction workers move frequently from jobsite to jobsite, yet little is documented about length of stay on-site and associations with worker characteristics.
  
  
  METHODS
  Using cross-sectional data, we investigated associations between worker characteristics (including trade and musculoskeletal pain) and length of stay on-site (dichotomized as < 1 month, n = 554, and ≥ 1 month, n = 435).
  
  
  RESULTS
  Approximately, 56% of workers remained on the worksite for at least 1 month. Length of stay was significantly associated with workers' race/ethnicity, union status, title, trade, and musculoskeletal pain (P-values < 0.05). Trades associated with longer length of stay included pipefitters and plumbers. Trades associated with shorter length of stay included operators and piledrivers. Workers with single-location pain had 2.21 times (95%CI: 1.52, 3.19) the odds of being short-term versus long-term, adjusting for trade, title, and race/ethnicity.
  
  
  CONCLUSIONS
  The length of stay and associated characteristics provide important insight into how workers come and go on construction sites and the methodological challenges associated with traditional intervention evaluations.
authors.affiliation: Department Environmental Health, Harvard T.H. Chan School of Public Health.
authors.forename: Emily H
authors.initials: EH
authors.lastname: Sparer
authors.affiliation: Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health.
authors.forename: Cassandra A
authors.initials: CA
authors.lastname: Okechukwu
authors.affiliation: Department of Physical Therapy, Movement, and Rehabilitation Sciences, Bouvé College of Health Sciences, Bouvé College of Health Sciences, Northeastern University.
authors.forename: Justin
authors.initials: J
authors.lastname: Manjourides
authors.affiliation: Department Environmental Health, Harvard T.H. Chan School of Public Health.
authors.forename: Robert F
authors.initials: RF
authors.lastname: Herrick
authors.affiliation: Department Environmental Health, Harvard T.H. Chan School of Public Health.|Department of Epidemiology, Harvard T.H. Chan School of Public Health.|Orthopedic and Arthritis Center for Outcomes Research, Department of Orthopedic Surgery, Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Harvard Medical School.
authors.forename: Jeffrey N
authors.initials: JN
authors.lastname: Katz
authors.affiliation: Department Environmental Health, Harvard T.H. Chan School of Public Health.|Department of Physical Therapy, Movement, and Rehabilitation Sciences, Bouvé College of Health Sciences, Bouvé College of Health Sciences, Northeastern University.
authors.forename: Jack T
authors.initials: JT
authors.lastname: Dennerlein
mesh_terms: D000328:Adult; D060389:Construction Industry / Q000706:statistics & numerical data*; D003430:Cross-Sectional Studies; D004651:Employment / Q000706:statistics & numerical data*; D005006:Ethnicity / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D007750:Labor Unions / Q000706:statistics & numerical data; D008297:Male; D008875:Middle Aged; D059352:Musculoskeletal Pain / Q000453:epidemiology / Q000209:etiology; D009784:Occupational Diseases / Q000453:epidemiology / Q000209:etiology; D016017:Odds Ratio; D044469:Racial Groups / Q000706:statistics & numerical data; D013997:Time Factors; D014937:Work; D017132:Workplace / Q000706:statistics & numerical data*
keywords: construction; dynamic work environment; length of time on-site; worker characteristics