1. The Management of Small Polyps Found by Virtual Colonoscopy: Results of a Decision Analysis 
Chin Hur, Daniel C. Chung, Robert E. Schoen, G. Scott Gazelle 
Clinical Gastroenterology and Hepatology 
Volume 5, Issue 2, Pages (February 2007)
DOI: /j.cgh
Copyright © 2007 AGA Institute Terms and Conditions

2. Figure 1
Markov model used for the analysis. The start of the model shows a hypothetic 50-year-old patient who is found to have a 6- to 9-mm polypoid lesion on a screening CTC. Two strategies, immediate colonoscopy for polypectomy (COLO), and repeat the CTC examination in 3 years (WAIT), are modeled. A triangle at the end of a course signifies that the patient will be in this state at the end of the 3-year analysis. A circle with the letter m inside signifies that this is a Markov chain and that the patient will continue to another portion of the model. As stated in the text box, a patient with cancer can die from the cancer at any time in the 3-year analysis based on the annual stage-specific mortality rates stage (see Table 1).
Clinical Gastroenterology and Hepatology 2007 5, DOI: ( /j.cgh )
Copyright © 2007 AGA Institute Terms and Conditions