Development and validation of NEWSQOL, the Newcastle Stroke-Specific Quality of Life Measure

Cerebrovascular Diseases
Deborah BuckGary A Ford

Abstract

A review of stroke-specific quality of life (QOL) measures indicated little evidence of their validity/reliability. To describe the development/validation of a new measure - the Newcastle Stroke-Specific Quality of Life Measure (NEWSQOL). Phase I: qualitative interviews (28 stroke patients) determined QOL issues for inclusion in the measure. Initial items/response categories were pre-tested (30 patients). Administration of the NEWSQOL in the item reduction stage (100 patients) identified poorly performing items and factor analysis showed likely domains. Internal consistency was examined. Phase II: NEWSQOL and comparator measures were administered (106 patients) to examine validity/test-retest reliability. Phase I: 140 items were identified for initial inclusion. Qualitative pre-testing led to an extensive revision. Item reduction resulted in a final measure of 56 items in 11 domains (feelings, activities of daily living/self-care, cognition, mobility, emotion, sleep, interpersonal relationships, communication, pain/sensation, vision, fatigue; Cronbach's alpha = 0.71-0.90). Phase II: NEWSQOL domain scores, except cognition, were moderately/highly correlated (0.45-0.76) with relevant comparator measures. NEWSQOL domains feelings,...Continue Reading

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