title: The development of summary components for the Disablement in the Physically Active scale in collegiate athletes.
abstract: OBJECTIVE
  The Disablement in the Physically Active scale (DPA) is a generic patient-reported outcome designed to evaluate constructs of disability in physically active populations. The purpose of this study was to analyze the DPA scale structure for summary components.
  
  
  METHODS
  Four hundred and fifty-six collegiate athletes completed a demographic form and the DPA. A principal component analysis (PCA) was conducted with oblique rotation. Factors with eigenvalues >1 that explained >5 % of the variance were retained.
  
  
  RESULTS
  The PCA revealed a two-factor structure consistent with paradigms used to develop the original DPA. Items 1-12 loaded on Factors 1 and Items 13-16 loaded on Factor 2. Items 1-12 pertain to impairment, activity limitations, and participation restrictions. Items 13-16 address psychosocial and emotional well-being. Consideration of item content suggested Factor 1 concerned physical function, while Factor 2 concerned mental well-being. Thus, items clustered around Factor 1 and 2 were identified as physical (DPA-PSC) and mental (DPA-MSC) summary components, respectively. Together, the factors accounted for 65.1 % of the variance.
  
  
  CONCLUSIONS
  The PCA revealed a two-factor structure for the DPA that resulted in DPA-PSC and DPA-MSC. Analyzing the DPA as separate constructs may provide distinct information that could help to prescribe treatment and rehabilitation strategies.
authors.affiliation: Department of Interdisciplinary Health Sciences, A.T. Still University, Mesa, AZ, USA. mnhouston@atsu.edu.
authors.forename: Megan N
authors.initials: MN
authors.lastname: Houston
authors.affiliation: School of Physical Therapy & Athletic Training, Old Dominion University, Norfolk, VA, USA.
authors.forename: Johanna M
authors.initials: JM
authors.lastname: Hoch
authors.affiliation: School of Physical Therapy & Athletic Training, Old Dominion University, Norfolk, VA, USA.
authors.forename: Bonnie L
authors.initials: BL
authors.lastname: Van Lunen
authors.affiliation: School of Physical Therapy & Athletic Training, Old Dominion University, Norfolk, VA, USA.
authors.forename: Matthew C
authors.initials: MC
authors.lastname: Hoch
mesh_terms: D000328:Adult; D056352:Athletes / Q000523:psychology*; D004185:Disability Evaluation; D004644:Emotions; D005260:Female; D006801:Humans; D008297:Male; D025341:Principal Component Analysis; D062486:Public Health Surveillance / Q000379:methods*; D011788:Quality of Life / Q000523:psychology*; D013334:Students / Q000523:psychology; D011795:Surveys and Questionnaires; D014495:Universities; D055815:Young Adult
keywords: Disablement; Patient-centered care; Patient-reported outcomes; Quality of life