| Oxygen saturation SaO2 ranges | 2005 Percent of Hospital A ICU blood gas samples | 2010 Percent of Hospital A ICU blood gas samples | 2015 Percent of Hospital A ICU blood gas samples | 2015 Percent of Hospital B ICU blood gas samples |
|---|---|---|---|---|
| <70% | 0.7% | 0.7% | 1.4% | 2.9% |
| 70–89.9% | 1.7% | 3.7% | 3.7% | 6.1% |
| 90–94% | 4.0% | 7.8% | 10.2% | 12.8% |
| 94.1–98% | 36.3% | 42.7% | 55.6% | 48.5% |
| >98% | 57.4% | 45.1% | 29.0% | 29.7% |