Reliability and construct validity of the Duchenne Video Assessment
| Autor: | Laura Dalle Pazze, Mindy G. Leffler, Marielle G Contesse, Amber T L Sapp, Susan D. Apkon, Linda Lowes |
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| Rok vydání: | 2021 |
| Předmět: |
0301 basic medicine
Male Duchenne muscular dystrophy medicine.medical_specialty validity Adolescent Physiology Intraclass correlation Movement Video Recording 030105 genetics & heredity Physical function behavioral disciplines and activities Severity of Illness Index clinical outcome assessment 03 medical and health sciences Cellular and Molecular Neuroscience 0302 clinical medicine Physical medicine and rehabilitation Disease severity Physiology (medical) medicine Humans Child Reliability (statistics) Clinical Research Articles Clinical Research Article Data collection reliability Construct validity Reproducibility of Results Test (assessment) Video assessment Muscular Dystrophy Duchenne Caregivers Child Preschool eHealth Neurology (clinical) Psychology 030217 neurology & neurosurgery |
| Zdroj: | Muscle & Nerve |
| ISSN: | 1097-4598 |
| Popis: | Introduction The Duchenne Video Assessment (DVA) assesses quality of movement as an indication of Duchenne muscular dystrophy (DMD) disease severity. Caregivers video record patients performing home‐based movement tasks using a mobile application, and physical therapists (PTs) rate the videos using scorecards with prespecified compensatory movement criteria. Reliability and construct validity of the DVA were tested using video and Pediatric Outcomes Data Collection Instrument (PODCI) data from patients with DMD and healthy controls from a separate study. Methods Fifteen PTs were trained and certified as DVA raters. All raters scored videos of five subjects performing each movement task; nine raters rescored the same videos four weeks later. Three raters scored videos from an average of 25 subjects for each movement task. Aggregate scores were used to test construct validity. An expert DMD clinician assigned each video to a severity group for known‐groups analyses. Differences between rater scores across severity groups were tested and correlations between DVA and PODCI scores were calculated. Results Inter‐rater reliability (intraclass correlation coefficient [ICC]) between all 15 raters ranged from 0.70 to 0.97 for all movement tasks. Mean intra‐rater reliability ICC for nine raters ranged from 0.82 to 0.98 for all movement tasks. There were statistically significant differences between known severity groups for all movement tasks. The DVA correlated strongly with related PODCI constructs of physical function and weakly with unrelated constructs. Discussion The DVA was found to be a reliable and valid tool for measuring quality of movement as an indication of disease severity. |
| Databáze: | OpenAIRE |
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