Comparison of Hydrocephalus Outcome Questionnaire scores to neuropsychological test performance in s

Journal of Neurosurgery: Pediatrics, Volume 8, Issue 4, Page 396-401, October 2011.
Object The Hydrocephalus Outcome Questionnaire (HOQ) is an established means of measuring quality of life, but the cognitive component of this questionnaire has never been formally compared with gold-standard neuropsychological test scores. The authors hypothesized that the HOQ Cognitive Health score would demonstrate a relatively strong correlation with neuropsychological test scores, whereas much weaker correlations would be seen for HOQ Physical and Social-Emotional Health scores. Methods A cross-sectional study of children with long-standing hydrocephalus presenting to The Hospital for Sick Children’s Neurosurgery Clinic was performed between July 2006 and September 2008. Participating children and families completed the HOQ and a battery of 21 standard neuropsychological tests and questionnaires. Pearson correlation analysis was then performed. Results A total of 83 patients (81% participation) was accrued; the mean age was 11.5 ± 3.4 years (mean ± SD) at the time of assessment. The mean age at hydrocephalus treatment was 1.3 ± 2.6 years. The mean overall HOQ score was 0.69 ± 0.21. The HOQ Cognitive score had a moderate or strong correlation with 19 (90%) of 21 neuropsychological test scores, much more so than the HOQ Social-Emotional score (5 moderate or strong correlations, 24%) and the HOQ Physical score (1 moderate correlation, 5%). For 19 neuropsychological tests (90%), the HOQ Cognitive score had a stronger correlation than the other scores. The HOQ Cognitive score had particularly strong correlations with the Verbal IQ, List Learning, Behavior Problems, and Metacognitive Abilities components. Conclusions Data from a wide-ranging representative sample of children with long-standing hydrocephalus provide added evidence of the validity of the HOQ Cognitive score and the overall domain structure of the HOQ itself.

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Júlio Leonardo B. Pereira


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