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Correlation of symptomatic improvements with functional improvements and patient-reported outcomes in adults with attention-deficit/hyperactivity disorder treated with OROS methylphenidate

Rösler, Michael, Ginsberg, Ylva, Arngrim, Torben, Adamou, Marios, Niemelä, Asko, Dejonkheere, Joachim, van Oene, Joop and Schäuble, Barbara (2013) Correlation of symptomatic improvements with functional improvements and patient-reported outcomes in adults with attention-deficit/hyperactivity disorder treated with OROS methylphenidate. World Journal of Biological Psychiatry, 14 (4). pp. 282-290. ISSN 1562-2975

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Abstract

Objectives. To evaluate correlations between symptom severity and daily functioning in adults with ADHD. Methods. In the 5-week, double-blind LAMDA study, 401 adults with ADHD were randomly assigned to Osmotic-Release Oral System (OROS) methylphenidate (MPH) 18, 36 or 72 mg/day, or placebo. The primary variable – investigator-rated Conners’ Adult ADHD Rating Scale (CAARS:O-SV) – has been presented previously. Secondary endpoints included the self-reported version of CAARS (CAARS-S:S) and Clinical Global Impression – Severity (CGI-S). Daily functioning and quality of life were assessed using the Sheehan Disability Scale (SDS) and Quality of Life Enjoyment and Satisfaction Questionnaire (Q-LES-Q). Relationships between symptom and functional outcomes were evaluated in post-hoc Pearson partial correlation, multivariate regression and mediator analyses. Results. Improvements in CAARS-S:S, CGI-S and SDS scores were significantly greater in each OROS MPH arm versus placebo (P < 0.01 for all comparisons). Correlations between symptom and functioning scores were significant for all comparisons (P < 0.0001). In regression analyses, CAARS Hyperactivity/Impulsivity subscale and CGI-S were correlated with SDS (P < 0.05). CAARS Inattention was correlated with the SDS Family Life domain (P < 0.05). In a mediator analysis, the impact of treatment on SDS scores was fully mediated by improvement in CAARS:O-SV score. Conclusions. OROS MPH 18–72 mg/day was associated with significant improvements in ADHD symptoms, which correlated with improved daily functioning and health-related quality of life.

Item Type: Article
Subjects: R Medicine > R Medicine (General)
Schools: School of Human and Health Sciences
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Depositing User: Cherry Edmunds
Date Deposited: 11 Aug 2011 13:21
Last Modified: 22 May 2013 13:18
URI: http://eprints.hud.ac.uk/id/eprint/11251

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