Deriving summary indices of health status from the Amyotrophic Lateral Sclerosis Assessment Questionnaires (ALSAQ-40 and ALSAQ-5).

Journal article

OBJECTIVES: To use statistical procedures, operationalising what is known as item response theory (IRT), to assess the unidimensionality of the 40 item Amyotrophic Lateral Sclerosis Assessment Questionnaire, and consequently to develop a single index figure from the measure. A secondary objective is to compare scores gained on the ALSAQ-40 with a five item short form (the ALSAQ-5). METHODS: Postal survey of patients diagnosed with motor neurone disease (MND) on the MND Associations database. ...

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Authors: Jenkinson, C; Norquist, J; Fitzpatrick, R

• Publication status: Published
• Journal: Journal of neurology, neurosurgery, and psychiatry
• Volume: 74
• Issue: 2
• Pages: 242-245
• Publication date: 2003-02-01
• DOI: 10.1136/jnnp.74.2.242
• EISSN: 1468-330X
• ISSN: 0022-3050
• Language: English
• Keywords: Health Status Indicators; Humans; Neurologic Examination; Sensitivity and Specificity; Middle Aged; Aged; Female; Great Britain; Male; Questionnaires; Aged, 80 and over; Activities of Daily Living; Data Interpretation, Statistical; Adult; Disease Progression; Amyotrophic Lateral Sclerosis; Follow-Up Studies