Table 2.
Performance of univariate features and multivariate models.
| TPR | PPV | ROC-AUC | |
|---|---|---|---|
| Bio + SpO2 | 57.0% | 36.8% | 0.85 |
| CDI (Bio + Temperature) + SpO2 | 58.2% | 37.2% | 0.85 |
| Bio + Feeling + SpO2 | 56.1% | 36.4% | 0.84 |
| CDI (Bio + Temperature) | 55.7% | 36.4% | 0.84 |
| Bio + Feeling + SpO2 + Demographics | 55.9% | 36.4% | 0.83 |
| Bio + Feeling | 48.4% | 33.1% | 0.82 |
| Bio | 50.9% | 34.2% | 0.82 |
| Bio + Feeling + SpO2 + Temperature | 44.9% | 31.4% | 0.81 |
| Bio + Temperature + Demographics | 44.9% | 31.4% | 0.81 |
| Actigraphy only + Nighttime features | 42.1% | 30.1% | 0.79 |
| Min. respiration rate while not sleeping* | 43.3% | 30.6% | 0.77 |
| SpO2 at rest* | 34.0% | 23.8% | 0.75 |
| Min. heart rate while sleeping* | 34.6% | 25.6% | 0.74 |
| Max. Skin temperature while sleeping* | 47.4% | 31.5% | 0.72 |
| SpO2 after walking* | 43.6% | 31.0% | 0.72 |
| Nighttime features | 22.7% | 18.8% | 0.72 |
| HRV only | 26.2% | 21.2% | 0.71 |
| Actigraphy only | 25.7% | 20.8% | 0.71 |
| RR only | 29.8% | 23.3% | 0.69 |
| HR only | 31.9% | 24.6% | 0.69 |
| Feeling + SpO2 | 27.0% | 21.6% | 0.68 |
| Temperature + SpO2 | 40.7% | 29.3% | 0.68 |
| Demographics + Feeling + SpO2 | 14.7% | 13.9% | 0.67 |
| Demographics | 18.2% | 15.4% | 0.66 |
All statistics are weighted for equal participant contribution. TPR and PPV are given at 7% FPR threshold. All univariate features are marked with an asterisk (*). Bio refers to the top 50 features ultimately derived from ECG or Accelerometery signals, Feeling refers to the overall symptom survey response. Other feature groups represent models created using only the top 50 features from that particular source (i.e., the Actigraphy Only model uses only the top 50 actigraphy based features).