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Extended-release guanfacine hydrochloride in 6–17-year olds with ADHD: a randomised-withdrawal maintenance of efficacy study / Jeffrey H. NEWCORN in Journal of Child Psychology and Psychiatry, 57-6 (June 2016)
[article]
Titre : Extended-release guanfacine hydrochloride in 6–17-year olds with ADHD: a randomised-withdrawal maintenance of efficacy study Type de document : Texte imprimé et/ou numérique Auteurs : Jeffrey H. NEWCORN, Auteur ; Valerie HARPIN, Auteur ; Michael HUSS, Auteur ; Andrew LYNE, Auteur ; Vanja SIKIRICA, Auteur ; Mats JOHNSON, Auteur ; Josep Antoni RAMOS-QUIROGA, Auteur ; Judy VAN STRALEN, Auteur ; Benoit DUTRAY, Auteur ; Sasha SRECKOVIC, Auteur ; Ralph BLOOMFIELD, Auteur ; Brigitte ROBERTSON, Auteur Article en page(s) : p.717-728 Langues : Anglais (eng) Mots-clés : Long term efficacy randomised withdrawal attention-deficit/hyperactivity disorder guanfacine Index. décimale : PER Périodiques Résumé : Background Extended-release guanfacine hydrochloride (GXR), a selective ?2A-adrenergic agonist, is a nonstimulant medication for attention-deficit/hyperactivity disorder (ADHD). This phase 3, double-blind, placebo-controlled, randomised-withdrawal study evaluated the long-term maintenance of GXR efficacy in children/adolescents with ADHD. Methods Children/adolescents (6–17 years) with ADHD received open-label GXR (1–7 mg/day). After 13 weeks, responders were randomised to GXR or placebo in the 26-week, double-blind, randomised-withdrawal phase (RWP). The primary endpoint was the percentage of treatment failure (?50% increase in ADHD Rating Scale version IV total score and ?2-point increase in Clinical Global Impression-Severity compared with RWP baseline, at two consecutive visits). The key secondary endpoint was time to treatment failure (TTF). Trial registration ClinicalTrials.gov identifier NCT01081145; EudraCT 2009-018161-12. Results A total of 528 participants enrolled; 316 (59.8%) entered the RWP. Treatment failure occurred in 49.3% of the GXR and 64.9% of the placebo group (p = 0.006). TTF was significantly longer in GXR versus placebo (p = 0.003). GXR was well tolerated. Conclusions Guanfacine hydrochloride demonstrated long-term maintenance of efficacy compared with placebo in children/adolescents with ADHD. Implications of the placebo substitution design and findings with different ADHD medications are discussed. En ligne : http://dx.doi.org/10.1111/jcpp.12492 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=289
in Journal of Child Psychology and Psychiatry > 57-6 (June 2016) . - p.717-728[article] Extended-release guanfacine hydrochloride in 6–17-year olds with ADHD: a randomised-withdrawal maintenance of efficacy study [Texte imprimé et/ou numérique] / Jeffrey H. NEWCORN, Auteur ; Valerie HARPIN, Auteur ; Michael HUSS, Auteur ; Andrew LYNE, Auteur ; Vanja SIKIRICA, Auteur ; Mats JOHNSON, Auteur ; Josep Antoni RAMOS-QUIROGA, Auteur ; Judy VAN STRALEN, Auteur ; Benoit DUTRAY, Auteur ; Sasha SRECKOVIC, Auteur ; Ralph BLOOMFIELD, Auteur ; Brigitte ROBERTSON, Auteur . - p.717-728.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 57-6 (June 2016) . - p.717-728
Mots-clés : Long term efficacy randomised withdrawal attention-deficit/hyperactivity disorder guanfacine Index. décimale : PER Périodiques Résumé : Background Extended-release guanfacine hydrochloride (GXR), a selective ?2A-adrenergic agonist, is a nonstimulant medication for attention-deficit/hyperactivity disorder (ADHD). This phase 3, double-blind, placebo-controlled, randomised-withdrawal study evaluated the long-term maintenance of GXR efficacy in children/adolescents with ADHD. Methods Children/adolescents (6–17 years) with ADHD received open-label GXR (1–7 mg/day). After 13 weeks, responders were randomised to GXR or placebo in the 26-week, double-blind, randomised-withdrawal phase (RWP). The primary endpoint was the percentage of treatment failure (?50% increase in ADHD Rating Scale version IV total score and ?2-point increase in Clinical Global Impression-Severity compared with RWP baseline, at two consecutive visits). The key secondary endpoint was time to treatment failure (TTF). Trial registration ClinicalTrials.gov identifier NCT01081145; EudraCT 2009-018161-12. Results A total of 528 participants enrolled; 316 (59.8%) entered the RWP. Treatment failure occurred in 49.3% of the GXR and 64.9% of the placebo group (p = 0.006). TTF was significantly longer in GXR versus placebo (p = 0.003). GXR was well tolerated. Conclusions Guanfacine hydrochloride demonstrated long-term maintenance of efficacy compared with placebo in children/adolescents with ADHD. Implications of the placebo substitution design and findings with different ADHD medications are discussed. En ligne : http://dx.doi.org/10.1111/jcpp.12492 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=289 Sustainability of an early detection program for autism spectrum disorder over the course of 8 years / M. K. PIJL in Autism, 22-8 (November 2018)
[article]
Titre : Sustainability of an early detection program for autism spectrum disorder over the course of 8 years Type de document : Texte imprimé et/ou numérique Auteurs : M. K. PIJL, Auteur ; Jan K. BUITELAAR, Auteur ; M. W. DE KORTE, Auteur ; Nanda N. ROMMELSE, Auteur ; I. J. OOSTERLING, Auteur Article en page(s) : p.1018-1024 Langues : Anglais (eng) Mots-clés : autism spectrum disorder early detection implementation long term screening Index. décimale : PER Périodiques Résumé : The importance of early detection of autism spectrum disorder followed by early intervention is increasingly recognized. This quasi-experimental study evaluated the long-term effects of a program for the early detection of autism spectrum disorder (consisting of training of professionals and use of a referral protocol and screening instrument), to determine whether the positive effects on the age at referral were sustained after the program ended while controlling for overall changes in the number of referrals. Before, during, and after the program, the proportion of children referred before 3 years (versus 3-6 years) of age was calculated for children subsequently diagnosed with autism spectrum disorder ( N = 513) or another, non-autism spectrum disorder, condition ( N = 722). The odds of being referred before 3 years of age was higher in children with autism spectrum disorder than in children with another condition during the program than before (3.1, 95% confidence interval: 1.2-7.6) or after (1.7, 95% confidence interval: 1.0-3.0) the program but was not different before versus after the program. Thus, although the program led to earlier referral of children with autism spectrum disorder, after correction for other referrals, the effect was not sustained after the program ended. This study highlights the importance of continued investment in the early detection of autism spectrum disorder. En ligne : http://dx.doi.org/10.1177/1362361317717977 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=370
in Autism > 22-8 (November 2018) . - p.1018-1024[article] Sustainability of an early detection program for autism spectrum disorder over the course of 8 years [Texte imprimé et/ou numérique] / M. K. PIJL, Auteur ; Jan K. BUITELAAR, Auteur ; M. W. DE KORTE, Auteur ; Nanda N. ROMMELSE, Auteur ; I. J. OOSTERLING, Auteur . - p.1018-1024.
Langues : Anglais (eng)
in Autism > 22-8 (November 2018) . - p.1018-1024
Mots-clés : autism spectrum disorder early detection implementation long term screening Index. décimale : PER Périodiques Résumé : The importance of early detection of autism spectrum disorder followed by early intervention is increasingly recognized. This quasi-experimental study evaluated the long-term effects of a program for the early detection of autism spectrum disorder (consisting of training of professionals and use of a referral protocol and screening instrument), to determine whether the positive effects on the age at referral were sustained after the program ended while controlling for overall changes in the number of referrals. Before, during, and after the program, the proportion of children referred before 3 years (versus 3-6 years) of age was calculated for children subsequently diagnosed with autism spectrum disorder ( N = 513) or another, non-autism spectrum disorder, condition ( N = 722). The odds of being referred before 3 years of age was higher in children with autism spectrum disorder than in children with another condition during the program than before (3.1, 95% confidence interval: 1.2-7.6) or after (1.7, 95% confidence interval: 1.0-3.0) the program but was not different before versus after the program. Thus, although the program led to earlier referral of children with autism spectrum disorder, after correction for other referrals, the effect was not sustained after the program ended. This study highlights the importance of continued investment in the early detection of autism spectrum disorder. En ligne : http://dx.doi.org/10.1177/1362361317717977 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=370