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  • Title: OROS-methylphenidate or placebo for adult smokers with attention deficit hyperactivity disorder: racial/ethnic differences.
    Author: Covey LS, Hu MC, Winhusen T, Weissman J, Berlin I, Nunes EV.
    Journal: Drug Alcohol Depend; 2010 Jul 01; 110(1-2):156-9. PubMed ID: 20219292.
    Abstract:
    OBJECTIVE: To explore racial/ethnic difference in OROS-methylphenidate (OMPH) efficacy when added to nicotine patch and counseling for treating nicotine dependence among smokers with attention deficit hyperactivity disorder (ADHD). METHOD: Participants were adult smokers with ADHD (202 whites and 51 non-whites) randomly assigned to OMPH or placebo in a multi-site, randomized controlled trial. Study outcomes were complete, prolonged, and point-prevalence abstinence at the end of treatment, and weekly ratings of ADHD symptoms, tobacco withdrawal symptoms, and desire to smoke. RESULTS: The rate of four-week complete abstinence (no slips or lapses) was significantly higher with OMPH than placebo among non-white (OMPH=42.9%, placebo=13.3%, chi(2)(1)=5.20, p=0.02) but not white participants (OMPH=23.1%, placebo=23.5%, chi(2)(1)=0.00, p=0.95). Patterns of prolonged and point-prevalence abstinence among non-whites were similar but fell short of statistical significance. OMPH reduced ADHD symptoms in both race/ethnic groups, and produced greater reductions in desire to smoke and withdrawal symptoms among the non-white than white participants. Change in desire to smoke, but not in withdrawal or ADHD symptoms predicted abstinence. The ability of OMPH to reduce desire to smoke among non-whites appeared to mediate the medication's positive effect on abstinence. CONCLUSION: Differential efficacy favoring non-whites of a medication for achieving smoking cessation is a potentially important finding that warrants further investigation. OROS-MPH could be an effective treatment for nicotine dependence among a subgroup of smokers.
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