Biostatistics & Research · single question
A dental office compares three lasers using a cost-effectiveness chart. Laser 1: cost-effectiveness analysis (CEA) negative, lower price. Laser 2 (Erbium:YAG): CEA positive, mid-price. Laser 3: CEA negative, higher price. Which is most appropriate to purchase?
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Correct answer: B. Laser 2 (positive cost-effectiveness, mid-price)
A positive cost-effectiveness result means the device delivers value justifying its cost; Laser 2 is the only option with a favorable cost-effectiveness profile, so it is the rational purchase even at a middle price.Other options: Lasers 1 and 3 have negative cost-effectiveness, meaning poor value regardless of price.Key exam takeaway: Choose the option with positive cost-effectiveness; lowest sticker price is not the deciding factor.
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