Figure 1From: Are decision trees a feasible knowledge representation to guide extraction of critical information from randomized controlled trial reports? Example tree structure from an RCT (PMID: 12637461). The tree compares tamoxifen treatment with tamoxifen plus aminoglutenthimide for postmenopausal breast cancer patients. The primary outcome measure is 5 year disease free survival (DFS), whose numerical values can directly be utilized in decision analysis. The corresponding true decision tree is illustrated.Back to article page