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Table 5 Performance of the SVM models when inputting CDU-based features, clinical features, or a combination of both. Reported values are median [IQR]

From: Exploring the predictive value of carotid Doppler ultrasound and clinical features for spinal anesthesia-induced hypotension: a prospective observational study

 

CDU-based features

Clinical features

CDU-based and clinical features

Sensitivity (%)

25 [19 – 38]

75 [0 – 100]

0 [0 – 63]

Specificity (%)

75 [58 – 85]

75 [0 – 85]

50 [19 – 63]

AUROC

0.47 [0.39 – 0.62]

0.50 [0.47 – 0.66]

0.38 [0.25 – 0.52]

PPV (%)

33 [25 – 75]

38 [0 – 56]

0 [0 – 38]

NPV (%)

57 [53 – 60]

50 [0 – 62]

33 [25 – 41]

F1 score

0.33 [0.21 – 0.44]

0.55 [0 – 69]

0 [0 – 0.47]

  1. AUROC area under the receiver operating characteristic curve, CDU carotid Doppler ultrasound, NPV negative predictive value, PPV: positive predictive value
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Perioperative Medicine

ISSN: 2047-0525