NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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Ace your North American Pharmacist Licensure Examination (NAPLEX) with our comprehensive practice test. Features include interactive flashcards, multiple-choice questions, with detailed hints and explanations. Fast-track your pharmacy career today!

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What is the formula for calculating the Incremental Cost Effectiveness Ratio (ICER)?

(cost new - cost old)/(effect new - effect old)
% risk in control group - % risk in treatment group
hazard rate in treatment group / hazard rate in control group
Cigarette packs/day x years smoked

The correct answer is: (cost new - cost old)/(effect new - effect old)

The correct formula for calculating the Incremental Cost Effectiveness Ratio (ICER) is (cost new - cost old)/(effect new - effect old). This formula compares the difference in costs between two treatment options to the difference in their effects. It helps in determining the additional cost incurred for gaining an additional unit of effect when comparing two interventions. Option B, % risk in control group - % risk in treatment group, is not the correct formula for calculating ICER. This equation seems to be related to calculating the absolute risk reduction or relative risk reduction, rather than ICER. Option C, hazard rate in treatment group / hazard rate in control group, is not the correct formula for ICER calculation. This formula appears to be related to hazard ratios in survival analysis, not the calculation of cost-effectiveness ratios. Option D, Cigarette packs/day x years smoked, is not relevant to the calculation of ICER. This formula is related to assessing smoking habits and does not provide a framework for evaluating the cost-effectiveness of interventions.