Figure 4.

Overlay plot of classifications made by the BETS-12 model. This plot illustrates which records were correctly (green dot) and incorrectly (red ×) classified as a function of the model’s predicted (estimated) probability of survival greater than 12 months. Most misclassifications were optimistic, with a median estimated probability of 0.60 (total range 0.26-0.96; interquartile range 0.51, 0.76). Twelve-month survival was underestimated in 62 records (incorrectly classified records from probability 0 to 0.5) in which patients lived longer than the estimated 12 months. They represent cases at risk for implant failure if less-invasive or less durable constructs are used.