Fig. 3
From: An algorithm to identify cases of pulmonary arterial hypertension from the electronic medical record
Ranked features of final random forests algorithm. Importance of features of the algorithm are depicted. Strength was defined as the number of mentions throughout the medical record. Persistence was defined as the number of days that code or term stayed on the record. Durability was defined as the persistence divided by the length of the record after the first appearance on the record