Univariate logistic regression | Multivariate logistic regression | |||||||
Relative risk | SE | 95% CI | p-value | Relative risk | SE | 95% CI | p-value | |
Mechanical ventilation | 2.84 | 0.75 | 1.69–4.77 | <0.001 | 2.44 | 0.77 | 1.31–4.52 | 0.005 |
Intensive care unit | 2.85 | 0.73 | 1.73–4.71 | <0.001 | 2.55 | 0.76 | 1.42–4.6 | 0.002 |
High-flow oxygen treatment | 2.06 | 0.27 | 1.59–2.66 | <0.001 | 1.95 | 0.26 | 1.5–2.53 | <0.001 |
30-day mortality due to COVID-19 | 1.77 | 0.37 | 1.17–2.67 | 0.007 | 1.14 | 0.29 | 0.7–1.88 | 0.601 |
30-day all-cause mortality | 1.51 | 0.24 | 1.10–2.06 | 0.01 | 0.95 | 0.22 | 0.61–1.51 | 0.853 |
Age, sex, comorbidity and non-high-flow oxygen treatment are included as covariates in the multivariate analysis. In this analysis FLUS was the only variable that predicted need for mechanical ventilation, admission to intensive care unit and high-flow oxygen treatment. FLUS did not predict 30-day mortality or 30-day mortality due to COVID-19. Age was the only positive predictor for these in a multivariable logistic regression.