Development of the Knee OA Pre-Screening Questionnaire.
Flavia Yázigi1, Filomena Carnide1, Margarida Espanha1
1Univ Lisboa, Fac Motricidade Humana, CIPER, LBMF, P-1499-002, Lisbon, Portugal.
International Journal of Rheumatic Diseases
|September 27, 2014
Summary
A new Knee Osteoarthritis Pre-Screening Questionnaire (KOPS) shows good validity and reliability for screening knee osteoarthritis (KOA). This tool is valuable for health professionals lacking advanced diagnostic equipment.
Area of Science:
- Orthopedics
- Rheumatology
- Epidemiology
Background:
- Self-report questionnaires are crucial for disease screening and epidemiological studies.
- Limited validated screening tools exist for knee osteoarthritis (KOA).
- Health and exercise professionals require accessible KOA screening methods.
Purpose of the Study:
- To develop and validate a screening tool for knee osteoarthritis (KOA).
- To create a cost-effective and accessible KOA screening questionnaire for non-specialists.
Main Methods:
- The study involved content validity, reliability, criterion validity, construct validity, and responsiveness assessments.
- Internal consistency and reproducibility were evaluated using Cronbach's alpha and ICC.
- Criterion validity compared KOPS scores with SF-12, WOMAC, and 6-minute walk test; construct validity used ROC curves.
Main Results:
- The KOPS demonstrated good internal consistency (Cronbach's alpha: 0.747) and reliability (ICC: 0.646).
- Reproducibility was high (ICC: 0.895-0.992).
- ROC analysis indicated a sensitivity of 86.96% and specificity of 75.82%, with medium responsiveness.
Conclusions:
- The Knee OA Pre-Screening Questionnaire (KOPS) is a valid screening tool for KOA.
- Consideration should be given to translating the KOPS into English for broader use.
