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The Dutch functional performance inventory: validity and reliability in patients with chronic obstructive lung
Saskia W M Weldam1, Jan-Willem J Lammers, M C Caroline de Bruin-Veelers
1Saskia W. M. Weldam, MSc, RN, is Researcher, Department of Respiratory Diseases, Division of Heart and Lungs, University Medical Center Utrecht, the Netherlands. Jan-Willem J. Lammers, MD, PhD, is Head of Department of Respiratory Medicine, Division of Heart and Lungs, University Medical Center Utrecht, the Netherlands. M. C. (Caroline) de Bruin-Veelers, MSc, RN, is Nurse, Department of Respiratory Diseases, Division Heart and Lungs, University Medical Center Utrecht, the Netherlands. Marieke J. Schuurmans, PhD, RN, is Chair of Nursing Science, Department of Rehabilitation, Nursing Science and Sports, University Medical Center Utrecht, the Netherlands.
The Dutch Functional Performance Inventory (FPI) is a reliable tool for measuring daily living activities in COPD patients. While valid, its performance evidence is less robust than in other populations.
Area of Science:
- Pulmonary Medicine
- Rehabilitation Science
- Health Outcomes Research
Background:
- Activities of daily living (ADLs) are crucial outcome measures for chronic obstructive pulmonary disease (COPD).
- The Functional Performance Inventory (FPI) assesses ADL performance in individuals with COPD.
Purpose of the Study:
- Translate the FPI into Dutch.
- Evaluate the validity and reliability of the Dutch FPI in a Dutch COPD population.
Main Methods:
- Translation and cross-cultural adaptation of the FPI.
- Validation using the Clinical COPD Questionnaire (CCQ), Chronic Respiratory Questionnaire, and Medical Research Council Dyspnea Scale.
- Test-retest reliability assessed over two weeks in stable COPD patients.
Main Results:
- Dutch FPI demonstrated good reliability (Cronbach's alpha .55–.97, ICC .84–.97).
- Correlations with CCQ functional status domain were as hypothesized for household maintenance and physical exercise subscales.
- Recreation and Spiritual Activity subscales showed variability upon retesting.
Conclusions:
- The Dutch FPI is a reliable and reproducible measure for ADL in COPD.
- Evidence for the validity of the Dutch FPI is reasonable but requires further investigation compared to other populations.
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