Table 6 Sensitivity, specificity, positive predictive value, negative predictive value, and accuracy between (A) original model, (B) original model with rbs kernel adjustment, (C) model B with three additional features, and (D) features in model C with a random forests approach.

From: Impact of recording length and other arrhythmias on atrial fibrillation detection from wrist photoplethysmogram using smartwatches

PPIs

AUC

AUC 95% CI

Accuracy (%)

Sensitivity (%)

Specificity (%)

PPV (%)

NPV (%)

A

0.9263

0.9213–0.9312

90.63

93.03

88.50

87.81

92.86

B

0.9610

0.9577–0.9642

92.17

92.89

91.44

90.88

92.96

C

0.9629

0.9597–0.9660

92.24

92.17

92.30

91.70

92.32

D

0.9680

0.9651–0.9710

93.76

94.11

93.46

93.09

93.99

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