Fig. 2A–B.

The Bayesian Belief Network structure of the (A) 1-month and (B) 6-month models are shown. There are two first-degree associates of 1-month survival. These are the features that are most highly related to the outcome of interest and include the senior surgeon’s estimate of survival and the presence of a completed (as opposed to an impending) pathologic fracture. In comparison, there are six first-degree associates of 6-month survival, including preoperative hemoglobin, absolute lymphocyte count, oncologic diagnosis, presence of a completed pathologic fracture, the number of bone metastases, and the senior surgeon’s estimate of survival.