Levels and Variation in Overuse of Fecal Occult Blood Testing in the Veterans Health Administration
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Policy-makers have called for efforts to reduce overuse of cancer screening tests, including colorectal cancer screening (CRCS). Overuse of CRCS tests other than colonoscopy has not been well documented.
To estimate levels and correlates of fecal occult blood test (FOBT) overuse in a national Veterans Health Administration (VHA) sample.
Participants included 1,844 CRCS-eligible patients who responded to a 2007 CRCS survey conducted in 24 VHA facilities and had one or more FOBTs between 2003 and 2009.
We combined survey data on race, education, and income with administrative data on region, age, gender, CRCS procedures, and outpatient visits to estimate overuse levels and variation. We coded FOBTs as overused if they were conducted <10 months after prior FOBT, <9.5 years after prior colonoscopy, or <4.5 years after prior barium enema. We used multinomial logistic regression models to examine variation in overuse by reason (sooner than recommended after prior FOBT; sooner than recommended after colonoscopy, barium enema, or a combination of procedures), adjusting for clustering of procedures within patients, and patients within facilities.
Of 4,236 FOBTs received by participants, 885 (21 %) met overuse criteria, with 323 (8 %) sooner than recommended after FOBT, and 562 (13 %) sooner than recommended after other procedures. FOBT overuse varied across facilities (9–32 %, p < 0.0001) and region (12–23 %, p < .0012). FOBT overuse after prior FOBT declined between 2003 and 2009 (8 %–5 %, p = .0492), but overuse after other procedures increased (11–19 %, p = .0002). FOBT overuse of both types increased with number of outpatient visits (OR 1.15, p < 0.001), but did not vary by patient demographics. More than 11 % of overused FOBTs were followed by colonoscopy within 12 months.
Many FOBTs are performed sooner than recommended in the VHA. Variation in overuse by facility, region, and outpatient visits suggests addressing FOBT overuse will require system-level solutions.
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- Levels and Variation in Overuse of Fecal Occult Blood Testing in the Veterans Health Administration
Journal of General Internal Medicine
Volume 27, Issue 12 , pp 1618-1625
- Cover Date
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- colorectal neoplasms
- mass screening
- clinical practice variation
- Industry Sectors
- Author Affiliations
- 1. Center for Chronic Disease Outcomes Research, Minneapolis Veterans Affairs Medical Center, One Veterans Drive (2E-152), Minneapolis, MN, 55417, USA
- 2. Department of Medicine, University of Minnesota, Minneapolis, MN, USA
- 3. Center for Organization, Leadership and Management Research, VA Boston Healthcare System, Boston, MA, USA
- 4. Boston University School of Public Health, Department of Health Policy and Management, Boston, MA, USA
- 5. Health Services Research and Development, Center of Excellence in Primary Care, Durham VA Medical Center, Durham, NC, USA
- 6. Department of Medicine, Duke University Medical Center, Durham, NC, USA