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Table 5 Predictive values for significant CAD prediction depending on its prevalence

From: Usefulness of carotid ultrasonography in the diagnosis of coronary artery disease in patients undergoing exercise echocardiography

Prevalence of CAD PPV (95%CI) NPV (95%CI)
EE alone
 15% 29.8% (23.0–37.6) 97.9% (95.0–99.0)
 65% 81.7% (75.9–86.4) 81.4% (66.3–90.7)
 85% 93.2% (90.6–95.1) 58.8% (39.1–76.1)
EE + CP
 15% 32.1% (22.8–43.1) 99.5% (96.4–99.9)
 65% 83.3% (75.6–88.9) 94.8% (71.8–99.2)
 85% 93.8% (90.4–96.0) 85.6% (45.5–97.7)
  1. Abbreviations as in Table 4