Frequency of comorbidities in the patient cohorts
| COVID-19 +ve (n=22) | COVID-19 –ve (n=24) | |
| Ischaemic heart disease | 5 | 6 |
| Atrial fibrillation | 4 | 3 |
| Heart failure | 3 | 1 |
| Chronic obstructive pulmonary disease | 2 | 2 |
| Diabetes mellitus | 8 | 9 |
| Chronic kidney disease | 3 | 5 |
| Hypertension | 11 | 12 |
| Asthma | 1 | 3 |
| Total number of comorbidities | 37 | 41 |