Table 4 RE-epoch detection performance on the hold-out set with and without the low rPPG quality recordings exclusion.

From: Wearable monitoring of sleep-disordered breathing: estimation of the apnea–hypopnea index using wrist-worn reflective photoplethysmography

Recordings

Number of epochs (RE-epochs) (#)

Prevalence /Bias index63

Cohen’s kappa (kappa max63)

Accuracy (%)

Sensitivity (%)

Specificity (%)

PPV (%)

PR AUC

ROC AUC

All

222039 (32456)

0.73/0.04

0.36 (0.80)

85

38

94

53

0.48

0.80

Low rPPG quality recordings excluded

171237 (22305)

0.75/0.03

0.37 (0.84)

86

39

94

51

0.47

0.82

  1. The performance is for the overall amount of epochs contributing to the AHI (i.e. not Wake and epochs with less than 80% undefined features).
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