Abstract
Our objective was to compare scores on a smoking questionnaire to a diagnosis of cigarette smoking. As part of follow-ups in studies of ADHD, we assessed for cigarette smoking using structured interviews and the modified Fagerstrom Tolerance Questionnaire (mFTQ). Data were obtained from 162 subjects (mean = 19.2 yrs). ROC analysis and kappa coefficients revealed that a cutoff score of 3 on the mFTQ showed the strongest agreement with a full diagnosis of cigarette smoking (kappa = 0.68). Clinicians and researchers using the mFTQ in adolescents and young adults should consider a cutoff score of 3 to be indicative of cigarette smoking.
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