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Bias, precision and accuracy of peripheral oxygen measurements during 6MWT
| Probe location | Number of valid measurements | Bias (SpO2–SaO2) | Standard deviation | Accuracy (ARMS) |
|---|---|---|---|---|
| Finger | ||||
| Pre-test | 73 | − 0.7% | 1.9% | 1.9% |
| Post-test | 78 | − 3.3% | 4.8% | 5.8% |
| Earlobe | ||||
| Pre-test | 75 | 1.5% | 0.8% | 1.7% |
| Post-test | 77 | 1.3% | 2.0% | 2.4% |
| Forehead | ||||
| Pre-test | 64 | 0.0% | 1.3% | 1.3% |
| Post-test | 76 | 0.2% | 1.6% | 1.6% |
6MWT 6-Minute Walk Test, ARMS Accuracy root mean square
