Length of hospital stay for patients with HF admitted for COVID-19 by risk factors
| Risk factors | LOS (+) | LOS (–) | P value |
| Age≥65 | 8 (5, 12) | 8 (5, 14) | 0.439 |
| Male | 7 (4, 12) | 9 (5, 14) | 0.036 |
| Obesity (BMI ≥30) | 8 (5, 12) | 8 (5, 13) | 0.810 |
| Substance use | |||
| Tobacco | 7 (4, 13) | 8 (5, 13) | 0.507 |
| Alcohol | 10 (5.5, 14.5) | 8 (5, 12) | 0.260 |
| IVDU | 14 (11.3, 19.3) | 7 (4.5, 12) | 0.002 |
| Comorbidities | |||
| AF | 8 (5, 12) | 8 (4.5, 14) | 0.859 |
| Asthma | 13 (9, 20.8) | 7 (4, 12) | 0.001 |
| CB | 5 (5, 11) | 8 (5, 13) | 0.472 |
| CAD | 8 (5, 13) | 8 (4, 13) | 0.817 |
| CKD | 8 (4, 12) | 7 (5, 14) | 0.716 |
| COPD | 7 (5, 11) | 8 (5, 14) | 0.247 |
| DM | 9 (4.5, 14) | 7 (5, 11.5) | 0.428 |
| HLD | 7 (5, 12) | 9 (5, 14) | 0.203 |
| HTN | 8 (5, 13) | 12.5 (4, 20.5) | 0.901 |
| OSA | 10 (5, 14) | 7.5 (5, 13) | 0.501 |
| PAD | 9 (6, 16) | 7 (5, 12) | 0.01* |
| Stroke | 11 (5.75, 17.5) | 7 (4, 11) | 0.002 |
| VTE | 11.5 (5, 14.3) | 7 (5, 12) | 0.127 |
Values are represented by median (interquartile range) number of days hospitalised.
*Adjusted after multivariate linear regression.
AF, atrial fibrillation; BMI, body mass index; CAD, coronary artery disease; CB, chronic bronchitis; CKD, chronic kidney disease; COPD, chronic obstructive pulmonary disease; DM, diabetes mellitus; HF, heart failure; HLD, hyperlipidaemia; IVDU, intravenous drug use; Stroke, ischemic stroke; VTE, venous thromboembolism including deep venous thrombosis and pulmonary embolism.