Table 2

Comparison of the automated readmissions algorithm to the gold standard using the entire sample (n=2000) as the denominator

Gold standard
First admissionReadmissionTotal
Algorithm
 First admission1784271811
 Readmission16173189
 Total18002002000
Estimate (95% CI)
Sensitivity86.5% (81.0% to 90.9%)
Specificity99.1% (98.6% to 99.5%)
PPV91.5% (86.6% to 95.1%)
NPV98.5% (97.8% to 99.0%)
Agreement97.9% (97.1% to 98.4%)
  • NPV, negative predictive value; PPV, positive predictive value.