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Table 3 Diagnostic performance (95% confidence intervals) of heart failure-free cohort compared to Medicare referent standards

From: Assembling and validating a heart failure-free cohort from the Reasons for Geographic and Racial Differences in Stroke (REGARDS) study

  HF according to Medicare
N (%)
Excluded from HF-free cohort
N
Included in HF-free cohort
N
NPV %PPV %Sens %Spec %
Hospitalization for HF+293 (2.9%)2296499.2% (99.1–99.4%)14.6% (12.9–16.4%)78.2% (73.4–82.9%)86.3% (85.6–87.0%)(
9766 (97.1%)13388428
Principal diagnosis of HF+968 (9.6%)64232696.2% (95.8–96.6%)41.0% (38.5–43.4%)66.3% (63.3–69.3%)89.8% (89.2–90.4%)
9091 (90.4%)9258166
Any diagnosis of HF+1135 (11.3%)70942695.0% (94.5–95.4%)45.2% (42.8–47.7%)62.5% (59.6–65.3%)90.4% (89.8–91.0%)
8924 (88.7%)8588066
  1. Abbreviations
  2. HF Heart failure
  3. NPV Negative predictive value
  4. PPV Positive predictive value
  5. Sens Sensitivity
  6. Spec Specificity