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2017 ; 177
(6
): 800-807
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Cost-effectiveness of Common Diagnostic Approaches for Evaluation of Asymptomatic
Microscopic Hematuria
#MMPMID28418451
Halpern JA
; Chughtai B
; Ghomrawi H
JAMA Intern Med
2017[Jun]; 177
(6
): 800-807
PMID28418451
show ga
IMPORTANCE: Asymptomatic microscopic hematuria (AMH) is highly prevalent and may
signal occult genitourinary (GU) malignant abnormality. Common diagnostic
approaches differ in their costs and effectiveness in detecting cancer. Given the
low prevalence of GU malignant abnormality among patients with AMH, it is
important to quantify the cost implications of detecting cancer for each
approach. OBJECTIVE: To estimate the effectiveness, costs, and incremental cost
per cancer detected (ICCD) for 4 common diagnostic approaches evaluating AMH.
DESIGN, SETTING, AND PARTICIPANTS: A decision-analytic model-based
cost-effectiveness analysis using inputs from the medical literature. PubMed
searches were performed to identify relevant literature for all key model inputs,
each of which was derived from the clinical study with the most robust data and
greatest applicability. Analysis included adult patients with AMH on routine
urinalysis with subgroups of high-risk patients (males, smokers, age ?50 years)
seen in the primary care or urologic referral setting. INTERVENTIONS: Four
diagnostic approaches were evaluated relative to the reference case of no
evaluation: (1) computed tomography (CT) alone; (2) cystoscopy alone; (3) CT and
cystoscopy combined; and (4) renal ultrasound and cystoscopy combined. MAIN
OUTCOMES AND MEASURES: At termination of the diagnostic period, cancers detected,
costs (payer perspective), and ICCD per 10?000 patients evaluated for AMH.
RESULTS: Of the 4 diagnostic approaches analyzed, CT alone was dominated by all
other strategies, detecting 221 cancers at a cost of $9?300?000. Ultrasound and
cystoscopy detected 245 cancers and was most cost-effective with an ICCD of
$53?810. Replacing ultrasound with CT detected just 1 additional cancer at an
ICCD of $6?480?484. Ultrasound and cystoscopy remained the most cost-effective
approach in subgroup analysis. The model was not sensitive to any inputs within
the proposed ranges. Using probabilistic sensitivity analysis, ultrasound and
cystoscopy was the dominant strategy in 100% of simulations. CONCLUSIONS AND
RELEVANCE: The combination of renal ultrasound and cystoscopy is the most
cost-effective among 4 diagnostic approaches for the initial evaluation of AMH.
The use of ultrasound in lieu of CT as the first-line diagnostic strategy will
optimize cancer detection and reduce costs associated with evaluation of AMH.
Given our findings, we need to critically evaluate the appropriateness of our
current clinical practices, and potentially alter our guidelines to reflect the
most effective screening strategies for patients with AMH.