Applied Health Economics and Health Policy

, Volume 10, Issue 1, pp 15–29

Intra-operative vs pre-operative endoscopic sphincterotomy in patients with gallbladder and common bile duct stones

Cost-utility and value-of-information analysis
  • Kurinchi Gurusamy
  • Edward Wilson
  • Andrew K. Burroughs
  • Brian R. Davidson
Original Research Article

DOI: 10.2165/11594950-000000000-00000

Cite this article as:
Gurusamy, K., Wilson, E., Burroughs, A.K. et al. Appl Health Econ Health Policy (2012) 10: 15. doi:10.2165/11594950-000000000-00000



Patients with gallbladder and common bile duct stones are generally treated by pre-operative endoscopic sphincterotomy (ES) followed by laparoscopic cholecystectomy (POES). Recently, a meta-analysis has shown that intra-operative ES during laparoscopic cholecystectomy (IOES) results in fewer complications than POES, with similar efficacy. The cost effectiveness of IOES versus POES is unknown.


The objective of this study was to compare the cost effectiveness of IOES versus POES from the UK NHS perspective.


A decision-tree model estimating and comparing costs to the UK NHS and QALYs gained following a policy of either IOES or POES was developed with a time horizon of 3 years. Uncertainty was investigated with probabilistic sensitivity analysis, and the expected value of perfect information (EVPI) and partial information (EVPPI) were also calculated.


IOES was less costly than POES (approximately −£623 per patient [year 2008 values]) and resulted in similar quality of life (+0.008 QALYs per patient) as POES. Given a willingness-to-pay threshold of £20 000 per QALY gained, there was a 92.9% probability that IOES is cost effective compared with POES. Full implementation of IOES could save the NHS £2.8 million per annum. At a willingness to pay of £20 000 per QALY gained, the 10-year population EVPI was estimated at £0.6 million.


IOES appears to be cost effective compared with POES.

Copyright information

© Adis Data Information BV 2012

Authors and Affiliations

  • Kurinchi Gurusamy
    • 1
    • 4
  • Edward Wilson
    • 2
  • Andrew K. Burroughs
    • 3
  • Brian R. Davidson
    • 1
  1. 1.Hepatopancreatobiliary and Liver Transplant SurgeryUniversity Department of SurgeryLondonUK
  2. 2.Health Economics Group, Faculty of HealthUniversity of East AngliaNorwichUK
  3. 3.The Liver UnitThe Royal Free HospitalLondonUK
  4. 4.C/O Professor B.R. Davidson, 9th FloorUniversity Department of Surgery, Royal Free HospitalLondonUK

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