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Table 3 Accuracy of a previously used [5] ICD-10-based algorithm for major bleeding

From: Sensitivity and specificity of an algorithm based on medico-administrative data to identify hospitalized patients with major bleeding presenting to an emergency department

N True positive True negative False positive False negative Sensitivity % (95% CI) Specificity % (95% CI) PPV %(95% CI) NPV %(95% CI) Positive LR % (95% CI) Negative LR % (95% CI)
16,012 482 15,121 155 254 65.5 (61.9 to 68.9) 99.0 (98.8 to 99.1) 75.7 (72.1 to 78.9) 98.3 (98.1 to 98.5) 64.5 (21.8 to ∞) 0.35 (0.00 to 2.08)
  1. PPV and NPV denote positive and negative predictive values respectively, LR denotes likelihood ratio, CI denotes Clopper-Pearson’s (exact) confidence interval