Time with SpO2 values within and outside the target range with FiO2>21%
| Percentage of time, % | |||
|---|---|---|---|
| Manual | Automated | p Value* | |
| SpO2<80%, median (IQR) | 1.1 (0.4–1.7) | 0.9 (0.5–2.1) | ns |
| SpO2<85%, median (IQR) | 2.7 (1.4–4.0) | 3.2 (1.8–5.1) | ns |
| SpO2<90%, median (IQR) | 8.6 (7.2–11.7) | 15.1 (14.0–21.1) | <0.0001 |
| 90%≤SpO2≤95%, median (IQR) | 48.4 (41.5–56.4) | 62.0 (56.4–68.6) | <0.01 |
| SpO2 of >95%, median (IQR) | 41.9 (30.6–49.4) | 19.3 (11.5–24.5) | <0.001 |
| SpO2 of >98%, median (IQR) | 10.1 (3.7–14.4) | 2.1 (0.7–3.1) | <0.0005 |
Method: time with SpO2 within various ranges were collated for each infant individually and aggregated as proportions of recorded time (median and IQR).
*Statistical analysis comprised non-parametric Kruskal-Wallis rank-sum test.
FiO2, fraction of inspired oxygen; SpO2, pulse oxygen saturation.