Fig. 2
From: Accommodating heterogeneous missing data patterns for prostate cancer risk prediction
Amount of missing risk factor data by cohort on the x-axis; all patients were required to have prostate-specific antigen (PSA) and age, hence 0% missing for these covariates. The 3rd cohort separated by the black vertical line is used as an external validation set, and leave-one-cohort-out cross-validation was applied to the other cohorts. Cohorts were sorted by missing data pattern