Table 2 Bias and precision for each pulse oximeter (n = 10 000).

From: Accuracy of two pulse-oximetry measurements for INTELLiVENT-ASV in mechanically ventilated patients: a prospective observational study

 

Mean (95% CI)

Blood gas analysis

SaO2

95.72% (95.57–95.86)

Nihon Kohden SpO2

SpO2

96.4% (96.3–96.6)

Bias (SpO2—SaO2)

0.72% (0.62–0.81)

Precision

1.86 (1.78–1.95)

Upper limits of agreement

4.37 (4.11–4.63)

Lower limits of agreement

−2.93 (−3.20 to −2.69)

Masimo SpO2

SpO2

96.9% (96.7–97.1)

Bias (SpO2–SaO2)

1.17% (1.08–1.26)

Precision

1.68 (1.61–1.77)

Upper limits of agreement

4.46 (4.24–4.73)

Lower limits of agreement

−2.12 (−1.90 to −2.39)

  1. CI confidential interval, SaO2 arterial oxygen saturation, SpO2 pulse-oximetric oxygen saturation.
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