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Table 4 The cut-off value of LA strain and strain rate for POAF and ROC curve analysis

From: Strain and strain rate echocardiographic imaging predict occurrence of atrial fibrillation in post-coronary artery bypass grafting patients

Cut-off value SN %
(95% CI)
SP %
(95% CI)
PPV %
(95% CI)
NPV %
(95% CI)
Accuracy %
(95% CI)
AUC
(95% CI)
P-value
PALS (%) ≤ 29.8 82.1%
(63.1–93.9)
80.3%
(68.2–89.4)
65.7%
(47.8–80.9)
90.7%
(79.7–96.9)
80.9%
(71.2–88.5)
0.800
(0.667–0.884)
< 0.001
LASRs (s−1) ≤ 1.6 78.6%
(59.1–91.7)
65.6%
(52.3–77.3)
51.2%
(35.5–66.7)
87%
(73.7–95.1)
69.7%
(59.0–79.0)
0.749
(0.622–0.838)
< 0.001
LASRe (s−1) ≤ −1.36 82.1%
(63.1–93.9)
73.8%
(60.9–84.2)
59%
(42.1–74.4)
90%
(78.2–96.7)
76.4%
(66.2–84.8)
0.824
(0.710–0.896)
< 0.001
LASRa (s−1) ≤ −1.67 85.7%
(67.3–96.0)
90.2%
(79.8–96.3)
80%
(61.4–92.3)
93.2%
(83.5–98.1)
88.8%
(80.3–94.5)
0.908
(0.810–0.957)
< 0.001
  1. ROC curve receiver operating characteristic curve, SN sensitivity, SP specificity, PPV positive predictive value, NPV negative predictive value, AUC area under the curve, 95% CI 95% confidence interval