TTM-based interventions are hypothesised to be more effective
than traditional approaches because they target smokers in precontemplation
and contemplation (Prochaska & Velicer, 1997). Eighty
percent or more of smokers are in these stages (Etter, Perneger, &
Ronchi, 1997; Velicer et al., 1995). Prochaska and Velicer (1997) state
that conventional smoking cessation interventions will not influence
these smokers because they are relevant only for smokers in preparation,
defined as intending to quit within 28 days. In this study, we
examined evidence for this. If this hypothesis is correct,we should see
that the effects of stage-based interventions relative to standard
interventions are greater for smokers in precontemplation and
contemplation than they are for smokers in preparation. In precontemplation
and contemplation, standard materials are stage-mismatched,
whereas in preparation they are stage-matched
TTM-based interventions are hypothesised to be more effectivethan traditional approaches because they target smokers in precontemplationand contemplation (Prochaska & Velicer, 1997). Eightypercent or more of smokers are in these stages (Etter, Perneger, &Ronchi, 1997; Velicer et al., 1995). Prochaska and Velicer (1997) statethat conventional smoking cessation interventions will not influencethese smokers because they are relevant only for smokers in preparation,defined as intending to quit within 28 days. In this study, weexamined evidence for this. If this hypothesis is correct,we should seethat the effects of stage-based interventions relative to standardinterventions are greater for smokers in precontemplation andcontemplation than they are for smokers in preparation. In precontemplationand contemplation, standard materials are stage-mismatched,whereas in preparation they are stage-matched
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