Purpose: The present article summarises the characteristics of Rasch's theory, providing an
original metrological model for persons' measurements. Properties describing the person …

Healthcare clinicians strive to make meaningful changes in patient function and
participation. A minimal clinically important difference (MCID) is an estimate of the …

Purpose: The present paper presents developments and advanced practical applications of
Rasch's theory and statistical analysis to construct questionnaires for measuring a person's …

Abstract Background The Rasch model allows for linear measurement based on ordinal item
responses from rating scales commonly used to assess health outcomes. Such linear …

Idiopathic scoliosis is common in adulthood and can impact patients' physical and
psychological health. The Scoliosis Research Society-22 Questionnaire (SRS-22) has been …

Background Balance, ie, the ability not to fall, is often poor in neurological patients and this
impairment increases their risk of falling. The Mini-Balance Evaluation System Test (Mini …

Objectives: Assessing listening difficulties and associated complaints can be challenging.
Often, measures of peripheral auditory functions are within normal ranges, making clinicians …

This study aims to test the construct validity and reliability of the Quebec User Evaluation of
Satisfaction with assistive Technology 2.0 (QUEST)–device, an eight-item questionnaire for …

Abstract Background Musculoskeletal disorders (MSDs) are a common reason for seeking
primary health care. The STarT Musculoskeletal (MSK) tool is designed to stratify patients …

Modern medicine tends to privilege disciplines promising “objective “laws governing body
parts (from molecules to organs). Studies on a person's illness and disability are …