Two Dimension Threshold Model for Medical Decision Making

Two previous threshold approaches to medical decision making, one using the clinician's estimate of the probability that the patient has the disease and the other using the patient's utility for his/her current health state, were combined. We derived a two dimensional threshold space for deciding to treat or not treat. The case where an additional diagnostic test was available was also explored. The situation where more than one treatment choice is available, which is more interesting with a two dimensional space than with the traditional one dimensional threshold, was also explored.