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Table 3 Accuracy and net benefit of high maternal risk models to predict severe maternal morbidity or direct obstetric death

From: Methodology for sampling women at high maternal risk in administrative data

  Obstetric comorbidity index Unweighted comorbidities
Total High Risk 7260 (1.3%) 193,247 (35.1%)
True Positives 436 1588
Sensitivity 16.4% 59.8%
Specificity 98.7% 65%
Accuracy 98% 65%
Positive Predictive Value 6% 0.8%
Negative Predictive Value 99.6% 99.7%
OR (95% CI) 15.6 (14.0, 17.3) 2.8 (2.6, 3.0)
Net Benefit 0.7 −185.7