Development of a brief core set for knee dysfunction based on the International Classification of Functioning, Disability and Health: assessing construct validity and measurement potential.

Background: The comprehensive core set for knee dysfunction was developed to classify the functioning of people with any knee dysfunction. To be used as a clinical instrument to measure the functioning of people with knee dysfunction, the construct validity of the core set still needs to be assessed. The purpose of this study was to analyze the construct validity of the comprehensive core set for knee dysfunction as an instrument to measure functioning.

Content validity of the International Classification of Functioning, Disability and Health core set for knee dysfunction: a Delphi study.

Objective: To assess the content validity of the preliminary core set for knee dysfunction based on the opinion of experts.

Design: A panel of 180 experts in knee disorders or on the use of the International Classification of Functioning, Disability, and Health for musculoskeletal conditions was invited for this Delphi study. The experts gave their opinion on whether to include the categories of the preliminary core set for knee dysfunction in a more comprehensive core set, using a six-item Likert scale.

Development of a Core Set for Knee Dysfunction Based on the International Classification of Functioning, Disability and Health: A Cross-sectional Study.

Objective: To develop an International Classification of Functioning, Disability and Health core set for patients with knee dysfunction.

Design: Cross-sectional study.

Setting: The study was conducted at all levels of care (general community, primary care units, rehabilitation clinics/centers, hospital).