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Table 3 Performance Statistics for Stroke Mimic Prediction Scales

From: External validation of stroke mimic prediction scales in the emergency department

  AUROC
(95% CI)
P value* Cut off Sensitivity (%)
(95% CI)
Specificity (%)
(95% CI)
PPV (%)
(95% CI)
NPV (%)
(95% CI)
LR+
(95% CI)
LR-
(95% CI)
FABS 0.612
(0.487–0.738)
0.151 2 24.6
(19.3–30.5)
52.9
(27.8–77.0)
88.1
(77.8–94.7)
4.7
(2.2–8.8)
0.52
(0.3–0.91)
1.42
(0.90–2.24)
Simplified FABS 0.608
(0.483–0.734)
0.139 2 25.4
(20–31.4)
52.9
(27.8–77.0)
88.4
(78.4–94.9)
4.8
(2.2–8.9)
0.54
(0.31–0.94)
1.41
(0.89–2.22)
TeleStroke Mimic Score 0.750
(0.629–0.872)
Reference 13.6 91.3
(86.9–94.5)
58.8
(32.9–81.6)
96.9
(93.7–98.8)
32.3
(16.7–51.4)
2.22
(1.25–3.92)
0.15
(0.08–0.26)
Khan Score 0.602
(0.517–0.686)
0.081 2 32.1
(26.2–38.4)
88.2
(63.6–98.5)
97.5
(91.2–99.7)
8.4
(4.8–13.5)
2.73
(0.73–10.2)
0.77
(0.63–0.93)
  1. AUROC indicates area under receiver operating characteristics curve; PPV positive predictive value; NPV negative predictive value; LR+ likelihood ratio of a positive test result; LR- likelihood ratio of a negative test result
  2. * P value of comparing paired AUC with Delong method