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. Author manuscript; available in PMC: 2014 Apr 23.
Published in final edited form as: Obstet Gynecol. 2013 Oct;122(4):821–829. doi: 10.1097/AOG.0b013e3182a4a085

Figure 1. CE of Imaging versus the Prevalence of Appendicitis.

Figure 1

The pre-test probability, a surrogate for diagnostic certainty, must be greater than 99.5% prior to diagnostic laparoscopy becoming the most effective strategy at a willingness to pay of $50,000 per QALY.