Abstract:
OBJECTIVE:The assessment of behavioral disturbances in amyotrophic lateral sclerosis (ALS) is important because of the overlap with the behavioral variant of frontotemporal dementia (ALS-bvFTD). Motor symptoms and dysarthria are not taken into account in currently used behavioral questionnaires. We examined the clinimetric properties of a new behavioral questionnaire for patients with ALS (Amyotrophic Lateral Sclerosis-Frontotemporal Dementia-Questionnaire [ALS-FTD-Q]). METHODS:In addition to other clinimetric properties, we examined reliability, clinical validity, and construct validity of the ALS-FTD-Q, using data from patients with ALS (n = 103), ALS-bvFTD (n = 10), bvFTD (n = 25), muscle disease control subjects (n = 39), and control subjects (n = 31). Construct validity of the ALS-FTD-Q was assessed using the Frontal Systems Behavior scale (FrSBe), Frontal Behavioral Inventory (FBI), Hospital Anxiety and Depression Scale, ALS Functional Rating Scale-Revised, Frontal Assessment Battery, Mini-Mental State Examination, and a fluency index. In addition, the point prevalence of behavioral disturbances according to the ALS-FTD-Q was compared with those obtained with the FrSBe and FBI. RESULTS:The internal consistency of the ALS-FTD-Q was good (Cronbach α = 0.92). The ALS-FTD-Q showed construct validity because it correlated highly with other behavioral measures (r = 0.80 and 0.79), moderately with measures of frontal functions and global cognitive functioning (r = 0.37; r = 0.32), and poorly with anxiety/depression and motor impairment (r = 0.18 for both). The ALS-FTD-Q discriminated between patients with ALS-bvFTD, patients with ALS, and control subjects. The point prevalence of behavioral disturbances in patients with ALS measured with the ALS-FTD-Q was lower than that for the FrSBe and FBI. CONCLUSION:The ALS-FTD-Q is a feasible and clinimetrically validated instrument for the screening of behavioral disturbances in ALS.
journal_name
Neurologyjournal_title
Neurologyauthors
Raaphorst J,Beeldman E,Schmand B,Berkhout J,Linssen WH,van den Berg LH,Pijnenburg YA,Grupstra HF,Weikamp JG,Schelhaas HJ,Papma JM,van Swieten JC,de Visser M,de Haan RJdoi
10.1212/WNL.0b013e31826c1aa1subject
Has Abstractpub_date
2012-09-25 00:00:00pages
1377-83issue
13eissn
0028-3878issn
1526-632Xpii
WNL.0b013e31826c1aa1journal_volume
79pub_type
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