Objective: To assess the transtheoretical model applied to smoking cessation using the framework of N. D. Weinstein, A. J. Rothman, and S. R. Sutton (1998), which is the general framework for designing and evaluating stage models of health behavior.
Design: Systematic review.
Results and conclusion: The transtheoretical model applied to smoking cessation does not satisfy the criteria required of a valid stage model. Most significantly, the evidence indicates that the stages of change are not qualitatively distinct categories.
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