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Validity and reliability of a pilot scale for assessment of multiple system atrophy symptoms.

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Title: Validity and reliability of a pilot scale for assessment of multiple system atrophy symptoms.
Authors: Matsushima, Masaaki Browse this author
Yabe, Ichiro Browse this author →KAKEN DB
Takahashi, Ikuko Browse this author
Hirotani, Makoto Browse this author →KAKEN DB
Kano, Takahiro Browse this author →KAKEN DB
Horiuchi, Kazuhiro Browse this author
Houzen, Hideki Browse this author
Sasaki, Hidenao Browse this author →KAKEN DB
Keywords: Multiple system atrophy
Symptom assessment scale
Intraclass correlation coefficient
Cronbach’s α coefficient
Issue Date: Dec-2017
Journal Title: Cerebellum & ataxias
Volume: 4
Start Page: 11
Publisher DOI: 10.1186/s40673-017-0067-5
PMID: 28680652
Abstract: Background: Multiple system atrophy (MSA) is a rare progressive neurodegenerative disorder for which brief yet sensitive scale is required in order for use in clinical trials and general screening. We previously compared several scales for the assessment of MSA symptoms and devised an eight-item pilot scale with large standardized response mean [handwriting, finger taps, transfers, standing with feet together, turning trunk, turning 360°, gait, body sway]. The aim of the present study is to investigate the validity and reliability of a simple pilot scale for assessment of multiple system atrophy symptoms. Methods: Thirty-two patients with MSA (15 male/17 female; 20 cerebellar subtype [MSA-C]/12 parkinsonian subtype [MSA-P]) were prospectively registered between January 1, 2014 and February 28, 2015. Patients were evaluated by two independent raters using the Unified MSA Rating Scale (UMSARS), Scale for Assessment and Rating of Ataxia (SARA), and the pilot scale. Correlations between UMSARS, SARA, pilot scale scores, intraclass correlation coefficients (ICCs), and Cronbach’s alpha coefficients were calculated. Results: Pilot scale scores significantly correlated with scores for UMSARS Parts I, II, and IV as well as with SARA scores. Intra-rater and inter-rater ICCs and Cronbach’s alpha coefficients remained high (> 0.94) for all measures. Conclusion: The results of the present study indicate the validity and reliability of the eight-item pilot scale, particularly for the assessment of symptoms in patients with early state multiple system atrophy.
Type: article
Appears in Collections:北海道大学病院 (Hokkaido University Hospital) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 松島 理明

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