A Phase 3, Randomised, Double-blind, Multicentre, Parallel-group, Placebo- and Active-reference, Dose-optimisation Efficacy and Safety Study of Extended-release Guanfacine Hydrochloride in Children and Adolescents aged 6-17 years with Attention-Deficit/Hy
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Last updated:8th Oct 2010
The primary efficacy analysis will be performed on the change from baseline for the ADHD-RS-IV total score at Visit 15 using Last-Observation-Carried Forward (LOCF) methodology, for all subjects randomised and receiving study drug. The mean change from baseline will be compared between treatments using an Analysis of Covariance (ANCOVA) model. The primary treatment comparison is SPD503 versus placebo. The ANCOVA model will include treatment group (the effect of interest), the corresponding baseline score (the covariate), and the blocking factors age group (6-12 years or 13-17 years) and country. The null hypothesis states that there is no difference between SPD503 and placebo, with the 2-sided alternative of a non-zero difference between groups.
|Study start date||2010-10-08|