Association of exercise-induced hypoxia and other clinical findings with COVID-19 diagnosis among patients admitted for suspected COVID-19
| Unadjusted OR | Adjusted OR* | |||||
| OR | 95% CI | P value | aOR | 95% CI | p(LR) | |
| EIH >3% | 2.57 | 0.99 to 6.68 | 0.053 | 3.73 | 1.25 to 11.15 | 0.018 |
| CRP >100 mg/L | 5.43 | 2.05 to 14.43 | 0.001 | 6.00 | 2.16 to 16.62 | 0.001 |
| Lymphopenia <1.0×109/L | 3.58 | 1.55 to 8.24 | 0.003 | 5.05 | 1.99 to 12.86 | 0.001 |
| COVID-19 suggestive CXR changes | 15.60 | 6.00 to 40.57 | <0.001 | 20.87 | 7.06 to 61.72 | <0.001 |
| Self-reported dyspnoea | 5.01 | 1.63 to 15.37 | 0.001 | 5.21 | 1.66 to 16.34 | 0.001 |
| Pre-EIH test oxygen saturations | 0.89 | 0.75 to 1.06 | 0.183 | – | – | – |
| Duration of symptoms | 0.99 | 0.96 to 1.04 | 0.977 | – | – | – |
*Adjusted for age, sex and underlying respiratory comorbidity (Chronic obstructive pulmonary disease, pulmonary fibrosis, chronic pulmonary embolic disease).
CRP, C-reactive peptide; EIH, exercise-induced hypoxia; p(LR), p value calculated by likelihood ratio.