题目选项分析

Treatment for hypertension forestalls certain medical expenses by preventing strokes and heart disease.Yet any money so saved amounts to only one-fourth of the expenditures required to treat the hypertensive population.Therefore, there is no economic justification for preventive treatment for hypertension.

Which of the following, if true, is most damaging to the conclusion above?

【选项】The cost, per patient, of preventive treatment for hypertension would remain constant even if such treatment were instituted on a large scale.