title: Development and testing of a self-report instrument to measure actions: outpatient physical therapy improvement in movement assessment log (OPTIMAL).
abstract: OBJECTIVE
  Physical therapy is faced with the challenge of producing evidence that physical therapy interventions are effective. The fundamental question confronting physical therapy is whether or not physical therapy interventions make a contribution to function, health, and well-being. The individual's ability to perform actions can serve as a theoretical construct related to movement and health around which physical therapy interventions can be assessed. To this end, the aims of this study were: (1) to develop a self-report instrument to assess ability to perform mobility actions in an adult outpatient population and (2) to assess the psychometric properties of such an instrument in the appropriate population.
  
  
  METHODS
  An instrument was developed to assess difficulty and confidence related to 24 actions. Descriptive statistics and measures of reliability, validity, and responsiveness were computed. A total of 391 patients participated in the study.
  
  
  RESULTS
  The coefficient for reliability was in the required range, and measures of validity and responsiveness were established as well. Three factors were identified.
  
  
  CONCLUSIONS
  The instrument provides the beginning of documentation of outcomes in movement to identify the unique contributions of physical therapist practice.
authors.affiliation: Practice and Research Division, American Physical Therapy Association, 1111 N Fairfax St, Alexandria, VA 22314-1488, USA. andrewguccione@apta.org
authors.forename: Andrew A
authors.initials: AA
authors.lastname: Guccione
authors.forename: Thelma J
authors.initials: TJ
authors.lastname: Mielenz
authors.forename: Robert F
authors.initials: RF
authors.lastname: Devellis
authors.forename: Marc S
authors.initials: MS
authors.lastname: Goldstein
authors.forename: Janet K
authors.initials: JK
authors.lastname: Freburger
authors.forename: Ricardo
authors.initials: R
authors.lastname: Pietrobon
authors.forename: Sarah C
authors.initials: SC
authors.lastname: Miller
authors.forename: Leigh F
authors.initials: LF
authors.lastname: Callahan
authors.forename: Kenneth
authors.initials: K
authors.lastname: Harwood
authors.forename: Timothy S
authors.initials: TS
authors.lastname: Carey
mesh_terms: D000203:Activities of Daily Living; D005163:Factor Analysis, Statistical; D005260:Female; D017144:Focus Groups; D006801:Humans; D008297:Male; D008875:Middle Aged; D009068:Movement; D009140:Musculoskeletal Diseases / Q000534:rehabilitation*; D011594:Psychometrics; D015203:Reproducibility of Results; D020377:Self Efficacy; D011795:Surveys and Questionnaires; D014481:United States