COMPASS 31 – A Refined and Abbreviated Composite Autonomic Symptom Score (P03.019)
COMPASS 31 – A Refined and Abbreviated Composite Autonomic Symptom Score (P03.019)
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DOI:
10.1212/wnl.80.7_supplement.p03.019
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发表时间:
2013-02
期刊:
影响因子:
9.9
通讯作者:
D. Sletten;J. Mandrekar;P. Low;W. Singer
中科院分区:
文献类型:
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作者:
D. Sletten;J. Mandrekar;P. Low;W. Singer
OBJECTIVE: To develop an updated, concise, and statistically robust instrument for the standarized assessment of autonomic symptoms. BACKGROUND: The Autonomic Symptom Profile (ASP) is a well-established questionnaire evaluating severity and distribution of autonomic symptoms. Using a subset of questions, we have generated a validated scoring instrument, the composite autonomic symptom score (COMPASS). An error-prone scoring algorithm, time-consuming administration, and lack of internal consistency necessitated a redesign to an updated, more concise, statistically solid, and broadly applicable tool for autonomic symptom quantification. DESIGN/METHODS: We assessed the internal consistency of COMPASS using Cronbach alpha coefficients based on the ASP of 405 healthy control subjects. Applying a simplified scoring algorithm, we then used exploratory factor analysis with orthogonal rotation and Eigenvalue calculations to extract internally consistent domains and to reduce dimensionality. This was followed by expert revisions to eliminate redundant content and to retain clinically important questions, and final assessment of the new instrument. RESULTS: The new, simplified scoring algorithm alone resulted in higher Cronbach alpha values in all domains. Factor analysis revealed 7 domains with a total of 54 questions retained. Expert revisions resulted in further reduction of questions and domains with a remaining total of 31 questions in 6 domains (COMPASS 31). Measures of internal consistency were much improved compared to COMPASS. Following appropriate weighting, this instrument provides an autonomic symptom score from 0 to 100. CONCLUSIONS: COMPASS 31 is a refined, internally consistent, and markedly abbreviated quantitative measure of autonomic symptoms. It is based on the original ASP and COMPASS, applies a much simplified scoring algorithm, and is suitable for widespread use in autonomic research and practice. Supported by: In part by National Institutes of Health (NS 32352 Autonomic Disorders Program Project; NS 44233 Pathogenesis and Diagnosis of Multiple System Atrophy, U54 NS065736 Autonomic Rare Disease Clinical Consortium, and K23NS075141), Mayo CTSA (UL1 RR24150), and Mayo Funds. Disclosure: Dr. Sletten has nothing to disclose. Dr. Mandrekar has nothing to disclose. Dr. Low has received personal compensation for activities with Chelsea, Pfizer Inc, and WR Medical Inc. as a consultant. Dr. Low has received personal compensation in an editorial capacity for Autonomic Neuroscience. Dr. Singer has received payments from Jacobus Pharmaceuticals.