This is a preview. Log in through your library . Abstract Purpose To examine the construct validity of the Health Utilities Index Mark 3 (HUI3) by exploring relationships among several well-recognized ...

Background: Disease-specific Quality Of Life (QOL) measures are devised to assess the impact of a specific disease across a spectrum of important domains of life. The purpose of this study was to ...

Assessing the presence and degree of synovitis is the cornerstone of managing patients with arthritis. Ultrasound has been ...

1. What is the difference between the reliability and validity of a measurement? The validity of a measure is the extent to which differences in scores on the instrument reflect true differences among ...

In my previous blog post, I noted that reliability and validity are two essential properties of psychological measurement. Measures of intelligence, personality, vocational interests, and so forth ...