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The effect of non-medical factors on variations in the performance of colonoscopy among different health care settings

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Author Info

  • Karine Lamiraud
  • Alberto Holly
  • Bernard Burnand
  • Pascal Juillerat
  • Vincent Wietlisbach
  • Florian Froehlich
  • Jean-Jacques Gonvers
  • John-Paul Vader

Abstract

Background: Previous studies in the literature have shown significant variations in colonoscopy performance, even when medical factors are taken into account. This study aimed to examine the role of non-medical factors (i.e. embodied in health care system design) as possible contributors to variations in colonoscopy performance. Methods: We used patient data from a multicenter observational study conducted between 2000 and 2002 in 21 centers across 11 western countries. Variability was captured through two performance outcomes (diagnostic yield and colonoscopy withdrawal time), jointly studied as dependent variables using a multilevel two-equation system. Results: Results showed that open-access systems and high-volume colonoscopy centers were independently associated with a higher likelihood of detecting significant lesions and higher withdrawal durations. Fee for service (FFS) payment was associated with shorter withdrawal durations, and had an indirect negative impact on the diagnostic yield. Teaching centers exhibited lower detection rates and higher withdrawal times. Conclusions: Our results suggest that gate-keeping colonoscopy is likely to miss patients with significant lesions and that developing specialized colonoscopy units is important to improve performance. Results also suggest that FFS may result in a lower quality of care in colonoscopy practice and highlight that longer withdrawal times do not necessarily mean higher quality in teaching-centers.

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File URL: http://www.chuv.ch/bdfm/cdsp/80262.pdf
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Bibliographic Info

Paper provided by University of Lausanne, Institute of Health Economics and Management (IEMS) in its series Working Papers with number 0904.

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Length: 35 pages
Date of creation: Aug 2009
Date of revision:
Handle: RePEc:hem:wpaper:0904

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Related research

Keywords: Medical Practice Variation (MPV); performance; non-medical factors; panel two-equation linear-probit model; colonoscopy;

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  1. Nigel Rice & Andrew Jones, 1997. "Multilevel models and health economics," Health Economics, John Wiley & Sons, Ltd., vol. 6(6), pages 561-575.
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