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. 2019 Apr 20;6(5):ofz186. doi: 10.1093/ofid/ofz186

Figure 2.

Figure 2.

Discriminative performance (A) and confusion matrices (B) of predictive models for a complicated course of CDI 2 days after diagnosis using either electronic health record (EHR)–based or curated features. Shaded regions in (A) represent empirical 95% confidence intervals. The EHR model dominates the curated model for nearly all values of specificity (1-FPR). At a threshold based on the 95th percentile of risk for each model (marked with dots), the EHR-based model yields better sensitivity, specificity, and positive predictive value. Abbreviations: CDI, Clostridium difficile infection; FN, false negative; FP, false positive; FPR, false-positive rate; PPV, positive predictive value; TN, true negative; TP, true positive.