Abstract
Several studies were undertaken to assess the psychometric properties (reliability and initial convergent and discriminant construct validity) of the Neurological Quality of Life Questionnaire (NeuroQOL). The NeuroQOL contains 114 items answered in self report Likert format, with higher scores reflecting better quality of life. Study one compared the questionnaire with existing quality of life measures (Symptom Distress Scale, Sickness Impact Profile) and a significant ( p < 0.05) correlation was found. Studies two through five evaluated the relationship between the NeuroQOL and disease stage, psychological, neuropsychological and neurological measures, and a significant correlation was also found with each domain. The internal consistency reliability (alpha = 0.96), split half reliability ( r 12 = 0.97), and test-retest reliability (coefficients were 0.78 for 6 months and 0.67 for one year intervals between test and retest) were all found to be high and adequately stable. Overall, these results indicate acceptable reliability and initial construct validity for the NeuroQOL.
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