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Comparison of measurement bias and agreement.
| SpO2a, % | Biasb (95% CI), % | Lower LOA (95% CI), % | Upper LOA (95% CI), % | Arms, % |
|---|---|---|---|---|
| Entire range | 0.0 (−0.2 to 0.3) | −5.8 (−6.2 to −5.4) | 5.9 (5.5–6.3) | 3.0 |
| <90 | 1.2 (0.7 to 1.7) | −5.3 (−6.1 to −4.4) | 7.6 (6.7–8.4) | 3.4 |
| 90–100 | −0.3 (−0.6 to 0.1) | −5.8 (−6.2 to −5.4) | 5.1 (4.7–5.5) | 2.8 |
[(smartwatch + oximeter)/2].
[smartwatch − oximeter].
LOA: 95% limits of agreement.
