Screening for XXXX . A decision analytic view.

@entity5 @entity1 @entity263 @entity1486
OBJECTIVE: To determine the clinical and economic effects of screening for @entity263 with @entity1486 (PSA), transrectal ultrasound (TRUS), and digital rectal examination (DRE). DESIGN: Decision analytic cost-utility analysis comparing four screening strategies with a strategy of not screening. We assumed that the @entity5 detection rate and stage distribution were predicted by each combination of tests and that localized @entity5 was treated with radical prostatectomy. For each strategy, we calculated life expectancy, quality-adjusted life expectancy (QALE), and cost-utility ratios for unselected and high-prevalence populations. DATA: Probabilities and rates for clinical events were gathered from published data. We assessed utilities by the time-trade-off method using urologists, radiation oncologists, and internists as subjects. The Clinical Cost Manager at the New England Medical Center provided cost data. RESULTS: In unselected @entity1 between the ages of 50 and 70 years, screening with PSA or TRUS prolonged unadjusted life expectancy but diminished QALE. Screening with DRE alone yielded no reduction in mortality at any age. All programs increased costs. Results were sensitive only to assumptions about the efficacy of treatment. In high-prevalence populations, screening produced a similar pattern: gains in unadjusted life expectancy, losses in QALE, and increased costs. CONCLUSIONS: Our analysis does not support using PSA, TRUS, or DRE to screen asymptomatic @entity1 for @entity263 . Screening may result in poorer health outcomes and will increase costs dramatically. Assessment of comorbidity, risk attitude, and valuation of sexual function may identify individuals who will benefit from screening, but selecting high-prevalence populations will not improve the benefit of screening.
