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## Review of Quitting Measures  Velicer et al. (1997, cited in Velicer, 2004) classifies outcomes of smoking cessation **studies** (studies or programmes??) programmes  into three measures as follows: * point prevalence abstinence. -- refers to the proportion of people not smoking at any given point in time,   * continuous abstinence. -- refers to the proportion of people not smoking at all since the onset of the intervention  
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