Relationship between admission oxygen saturation group and inpatient mortality on univariate and multivariate analysis in patients without supplemental oxygen
| Died/ total | Univariate analysis | Multivariate analysis | |||||
| OR | 95% CI | P value | OR | 95% CI | P value | ||
| Oxygen saturations | N=96/1618 | ||||||
| 88%–92% | 35/479 | 1 | Reference | – | 1 | Reference | – |
| 97%–100% | 4/169 | 0.34 | 0.12 to 0.96 | 0.042 | 0.44 | 0.14 to 1.30 | 0.14 |
| 93%–96% | 20/570 | 0.46 | 0.26 to 0.81 | 0.007 | 0.62 | 0.34 to 1.15 | 0.13 |
| 87% or less | 37/401 | 1.29 | 0.80 to 2.09 | 0.30 | 0.88 | 0.51 to 1.51 | 0.64 |
| NEWS2-sats | – | – | – | 1.17 | 1.05 to 1.30 | 0.005 | |
| DECAF | – | – | – | 2.91 | 2.37 to 3.57 | <0.001 | |
DECAF, dyspnoea, eosinopenia, chest X-ray consolidation, acidaemia, atrial fibrillation; NEWS2, National Early Warning Score.