Interrater agreement in the assessment of motor manifestations of Huntington's disease
Identifieur interne : 003880 ( Main/Exploration ); précédent : 003879; suivant : 003881Interrater agreement in the assessment of motor manifestations of Huntington's disease
Auteurs : Penelope Hogarth [États-Unis] ; Elise Kayson [États-Unis] ; Karl Kieburtz [États-Unis] ; Karen Marder [États-Unis] ; David Oakes [États-Unis] ; Diana Rosas [États-Unis] ; Ira Shoulson [États-Unis] ; Nancy S. Wexler [États-Unis] ; Anne B. Young [États-Unis] ; Hongwei Zhao [États-Unis]Source :
- Movement Disorders [ 0885-3185 ] ; 2005-03.
English descriptors
- KwdEn :
- Basal Ganglia Diseases (diagnosis), Basal Ganglia Diseases (epidemiology), Basal Ganglia Diseases (prevention & control), Disease Progression, Humans, Huntington Disease (diagnosis), Huntington Disease (epidemiology), Huntington Disease (prevention & control), Huntington's disease, Observer Variation, Prospective Studies, Psychomotor Disorders (diagnosis), Psychomotor Disorders (epidemiology), Psychomotor Disorders (prevention & control), Severity of Illness Index, Videotape Recording, clinical trials, disease progression.
- MESH :
- diagnosis : Basal Ganglia Diseases, Huntington Disease, Psychomotor Disorders.
- epidemiology : Basal Ganglia Diseases, Huntington Disease, Psychomotor Disorders.
- prevention & control : Basal Ganglia Diseases, Huntington Disease, Psychomotor Disorders.
- Disease Progression, Humans, Observer Variation, Prospective Studies, Severity of Illness Index, Videotape Recording.
Abstract
With prospects improving for experimental therapeutics aimed at postponing the onset of illness in preclinical carriers of the Huntington's disease (HD) gene, we assessed agreement among experienced clinicians with respect to the motor manifestations of HD, a relevant outcome measure for preventive trials in this population. Seventy‐five clinicians experienced in the evaluation of patients with early HD and six non‐clinicians were shown a videotape compiled from the film archives of the United States–Venezuela Collaborative HD Research Project. Observers were asked to rate a 2–3‐minute segment of the motor examination for each of 17 at‐risk subjects. The rating scale ranged from 0 (normal) to 4 (unequivocal extrapyramidal movement disorder characteristic of HD). As measured by a weighted κ statistic, there was substantial agreement among the 75 clinicians in the judgment of unequivocal motor abnormalities comparing scale ratings of 4 with ratings that were not 4 (weighted κ = 0.67; standard error (SE) = 0.09). Agreement among the non‐clinicians was only fair (weighted κ = 0.28; SE = 0.10). Even under the artificial conditions of a videotape study, experienced clinicians show substantial agreement about the signs that constitute the motor manifestations of illness in subjects at risk for HD. We expect these findings to translate to a similar level of interobserver agreement in the clinical trial setting involving experienced investigators examining live patients. © 2005 Movement Disorder Society
Url:
DOI: 10.1002/mds.20332
Affiliations:
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<term>Disease Progression</term>
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<front><div type="abstract" xml:lang="en">With prospects improving for experimental therapeutics aimed at postponing the onset of illness in preclinical carriers of the Huntington's disease (HD) gene, we assessed agreement among experienced clinicians with respect to the motor manifestations of HD, a relevant outcome measure for preventive trials in this population. Seventy‐five clinicians experienced in the evaluation of patients with early HD and six non‐clinicians were shown a videotape compiled from the film archives of the United States–Venezuela Collaborative HD Research Project. Observers were asked to rate a 2–3‐minute segment of the motor examination for each of 17 at‐risk subjects. The rating scale ranged from 0 (normal) to 4 (unequivocal extrapyramidal movement disorder characteristic of HD). As measured by a weighted κ statistic, there was substantial agreement among the 75 clinicians in the judgment of unequivocal motor abnormalities comparing scale ratings of 4 with ratings that were not 4 (weighted κ = 0.67; standard error (SE) = 0.09). Agreement among the non‐clinicians was only fair (weighted κ = 0.28; SE = 0.10). Even under the artificial conditions of a videotape study, experienced clinicians show substantial agreement about the signs that constitute the motor manifestations of illness in subjects at risk for HD. We expect these findings to translate to a similar level of interobserver agreement in the clinical trial setting involving experienced investigators examining live patients. © 2005 Movement Disorder Society</div>
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<tree><country name="États-Unis"><region name="Oregon"><name sortKey="Hogarth, Penelope" sort="Hogarth, Penelope" uniqKey="Hogarth P" first="Penelope" last="Hogarth">Penelope Hogarth</name>
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<name sortKey="Oakes, David" sort="Oakes, David" uniqKey="Oakes D" first="David" last="Oakes">David Oakes</name>
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<name sortKey="Zhao, Hongwei" sort="Zhao, Hongwei" uniqKey="Zhao H" first="Hongwei" last="Zhao">Hongwei Zhao</name>
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