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VALIDATION OF THE LYMPHEDEMA LIFE IMPACT SCALE (LLIS): A CONDITION-SPECIFIC MEASUREMENT TOOL FOR PERSONS WITH
Lymphology
|March 5, 2016
Summary
The Lymphedema Life Impact Scale (LLIS) is a reliable and valid tool for assessing lymphedema
Area of Science:
- Lymphedema assessment
- Outcome measurement
- Rehabilitation science
Background:
- Evidence-based practice necessitates validated outcome measures for lymphedema.
- Existing measures lack lymphedema specificity.
- A comprehensive, condition-specific tool is needed to assess lymphedema's impact.
Purpose of the Study:
- To develop and validate the Lymphedema Life Impact Scale (LLIS).
- To assess the reliability and validity of the LLIS in patients with extremity lymphedema.
Main Methods:
- A multicenter, cross-sectional study.
- Assessed test-retest reliability in 17 participants.
- Evaluated internal consistency and validity in 71 lymphedema patients and 31 controls.
Main Results:
- High test-retest reliability (ICC .965–.990).
- Strong internal consistency (Cronbach's alpha .841–.926).
- LLIS demonstrated construct validity with symptoms and correlated highly with other measures.
Conclusions:
- The Lymphedema Life Impact Scale (LLIS) is a valid and reliable instrument.
- LLIS effectively assesses physical, psychosocial, and functional impairments in lymphedema patients.
- The LLIS is suitable for evaluating lymphedema severity across extremities.
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