Evaluating the psychometric properties of a telephone-based version of the Life-Space Assessment in older adults
- Conditions
- ife-Space Mobilitysociodemographic, environmental, cognitive, psychosocial and physical characteristics
- Registration Number
- DRKS00026666
- Lead Sponsor
- ehrstuhl für Geriatrie, Universität Heidelberg; AGAPLESION BETHANIEN KRANKENHAUS HEIDELBERG
- Brief Summary
The Life-Space Assessment (LSA) is the most commonly used questionnaire to assess life-space mobility (LSM) in older adults, with well-established psychometric properties for face-to-face (FF) administration. However, these properties have not yet been explicitly studied when the LSA is administered by telephone. The study aim was to evaluate the concurrent and construct validity, test-retest reliability, responsiveness and feasibility of a telephone-based LSA version (TE-LSA) in older adults. Fifty community-dwelling older adults (age=79.3±5.3 years) participated in the study. Concurrent validity was assessed against the FF-LSA, construct validity by testing 15 a priori hypotheses on expected associations with LSM determinants, test-retest reliability via two telephone surveys one week apart, responsiveness after 8.5±1.8 months in participants with improved, stable, and worsened mobility defined by two external criteria, and feasibility by the completion rate/time and ceiling/floor effects. Good to excellent agreement between the two different administration methods was found (intraclass correlation coefficient [ICC2,1]=.73-.98). Twelve of 15 (80%) hypotheses on construct validity were confirmed. ICCs for test-retest reliability were good to excellent (ICC2,1=.62-.94). Minimal detectable change for the TE-LSA total score was 20 points. Standardized response means were large for worsened (0.88), moderate for improved (0.68), and trivial for stable participants (0.04). Completion rate was 100% and mean completion time was 5.5±3.3 min. No ceiling or floor effects were observed for the TE-LSA total score. In conclusion, telephone administration of the LSA is valid, reliable, responsive, and feasible for assessing LSM in community-dwelling older adults.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Complete
- Sex
- All
- Target Recruitment
- 50
age =65 Jahre
- community-dwelling
- telephone available
- adequate German language skills
- ability to give consent
- cognitive impairment (Mini-Mental State Examination < 24 points)
- severe hearing impairment
- severe neurological, cardiovascular, metabolisch, mental or psychiatric disorders
Study & Design
- Study Type
- observational
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Evaluation of the feasibility, construct and concurrent validity, test-retest-reliability and sensitivity to change of the TE-LSA
- Secondary Outcome Measures
Name Time Method Evaluation of the test-retest-reliability and sensitivity to change of the face-to-face version of the German LSA