Fig. 2
From: Imputation methods for serologic biomarkers in inflammatory bowel disease
Average AUC as a function of percentage of missingness for different imputers across three classification tasks: CD vs. non-IBD (top row), UC vs. non-IBD (middle row), and CD vs. UC (bottom row), under MAR, MCAR, and MNAR mechanisms. The black horizontal line indicates the performance using the original (complete) data. Iterative imputers (II), particularly II(BR) and II(RF), tend to maintain higher AUCs in CD-related comparisons, whereas AE consistently outperforms others in UC vs. non-IBD at moderate to high missingness. Black horizontal line: original (complete-case) AUC and ribbons show ± 1 SD across imputations/repeats.
