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  • Title: Variable influence of the degree of smoking dependence on adult attention deficit/hyperactivity disorder in Iraqi medical students.
    Author: Ashor AW.
    Journal: Neurosciences (Riyadh); 2012 Jul; 17(3):241-7. PubMed ID: 22772930.
    Abstract:
    OBJECTIVE: To demonstrate the differences in the patterns of adult attention deficit/hyperactivity disorder (ADHD) symptoms among non, light, and heavy smokers. METHODS: A cross-sectional study involving 400 medical students (representing first to sixth year students) was conducted in the Department of Pharmacology, University of Al-Mustansiriya, Baghdad, Iraq from March to June 2011. The medical students completed a questionnaire containing the adult ADHD self-report scale (ASRS-screener) and the Fagerstrom Test for Nicotine Dependence (FTND). An ADHD score ≥14 was considered positive. An FTND score ≥6 signifies heavy smokers, and an FTND score ≤5 signifies light smokers. RESULTS: Three hundred and sixty-one medical students completed the questionnaire, 16.6% reported ADHD symptoms (19.8% male, 12.1% females). Forty-five percent of ADHD adults were smokers; more than half of them were categorized as heavy smokers (51.8%). In comparison with non-smokers, heavy smokers displayed significant deterioration in their inattentive and total ASRS score (p=0.0001). Light smokers show significantly higher hyperactive symptoms in comparison with non-smokers (p=0.041). A high FTND score was associated with severer deterioration in inattentive (r=0.391, p=0.001) but not hyperactive symptoms (r=0.153, p=0.117). CONCLUSION: The ADHD symptoms are highly prevalent among Iraqi medical students, and smoking among ADHD students is higher and heavier than non-ADHD controls. Heavy smoking tends to deteriorate rather than ameliorate (self-medicate) ADHD symptoms.
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