Reliability and validity of the Home Care STAT (Safety Task Assessment Tool)

Ryan Olson, Brad Wipfli, Robert R. Wright, Layla Garrigues, Thuan Nguyen, Borja López de Castro

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


Home care workers are a priority population for ergonomic assessment and intervention, but research on caregivers' exposures to hazards is limited. The current project evaluated the reliability and validity of an ergonomic self-assessment tool called Home Care STAT (Safety Task Assessment Tool). Participants (N=23) completed a background survey followed by 10-14 days of self-monitoring with the STAT. Results showed that the most frequent task was house cleaning, and that participants regularly performed dangerous manual client moving and transferring tasks. Researcher in-home observations of 14 workers (duration ≤2h) demonstrated that workers' self-assessments were moderately reliable. Correlational and multi-level analyses of daily self-assessment data revealed that several task exposures were significantly related to daily fatigue and/or pain. Other associations have implications for Total Worker Health™ ; for example, daily stress was positively associated with both pain and consumption of high calorie snacks. Findings support the STAT as a reliable and potentially valid tool for measuring home care workers' exposures to physically demanding tasks.

Original languageEnglish (US)
Pages (from-to)1157-1166
Number of pages10
JournalApplied Ergonomics
Issue number4
StatePublished - Jul 2014


  • Hazard exposure
  • Home care workers
  • Self-assessment

ASJC Scopus subject areas

  • Human Factors and Ergonomics
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Safety, Risk, Reliability and Quality
  • Engineering (miscellaneous)


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