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The strongest feature of this comprehensive textbook on clinical prevention is the clear presentation in several introductory chapters of the criteria for the evaluation of preventive maneuvers. Multiple sources of error can easily lead to a conclusion that a preventive maneuver is beneficial when it is not. These pitfalls include selection bias, length bias, lead-time bias, and the counterintuitively low predictive value that typically applies to screening for disease of low prevalence. All are discussed in the introductory chapters. Additional strengths of the book are excellent chapters on specific topics, including those on smoking cessation and adolescence. The chapter on
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