Apathy in amyotrophic lateral sclerosis: insights from Dimensional Apathy Scale

Gabriella Santangelo, Mattia Siciliano, Luigi Trojano, Cinzia Femiano, Maria Rosaria Monsurrò, Gioacchino Tedeschi, Francesca Trojsi

Research output: Contribution to journalArticle

Abstract

OBJECTIVES: Apathy is associated with cognitive decline and worse survival in amyotrophic lateral sclerosis (ALS); an accurate evaluation of this aspect is relevant in clinical settings. The aims of this study are to evaluate the prevalence of apathy in a large ALS sample, using published diagnostic criteria, and to explore the psychometric properties, the sensitivity and the specificity of the Dimensional Apathy Scale (DAS) as a screening tool for apathy.

METHODS: One hundred and thirty-one patients underwent clinical interview based on diagnostic criteria for apathy, DAS, Apathy Evaluation Scale, and assessment of depression, global cognitive functioning, and non-verbal intelligence.

RESULTS: According to diagnostic criteria, apathy occurred in 28.2% of the patients. The DAS showed high consistency, convergent, and discriminant validities. Apathetic and non-apathetic patients significantly differed on total DAS and executive and Behavioral/Cognitive Initiation subscales, indicating good criterion validity. Receiver operating characteristics analysis, considering diagnostic criteria for apathy as gold standard, revealed that a score of 26/27 was an optimal cut-off score for the identification of apathy.

CONCLUSIONS: The DAS is a valid screening tool for apathy and its aspects in ALS through limiting the impact of physical disability. Executive and behavioral/cognitive aspects of apathy, rather than emotional aspects, are more frequent in ALS.

Original languageEnglish
Pages (from-to)434-442
Number of pages9
JournalAmyotrophic Lateral Sclerosis and Frontotemporal Degeneration
Volume18
Issue number5-6
DOIs
Publication statusPublished - Aug 2017

Keywords

  • Journal Article

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    Santangelo, G., Siciliano, M., Trojano, L., Femiano, C., Monsurrò, M. R., Tedeschi, G., & Trojsi, F. (2017). Apathy in amyotrophic lateral sclerosis: insights from Dimensional Apathy Scale. Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration, 18(5-6), 434-442. https://doi.org/10.1080/21678421.2017.1313865