Table 1 Participant demographics and clinical parameters
From: Accelerated immune ageing is associated with COVID-19 disease severity
|  | Healthy controls (n = 59) | Mild COVID-19 (n = 15) | Moderate COVID-19 (n = 32) | Severe COVID-19 (n = 56) | p value |
|---|---|---|---|---|---|
Age ( mean ± SD) | 50.49 ± 10.68 | 49.67 ± 7.30 | 52.28 ± 11.43 | 53.12 ± 11.30 | p = 0.50 |
Males (%) | 28 (47%) | 4 (26%) | 15 (46%) | 31 (55%) | p = 0.36 |
ICU length of stay (days) | 0 | 0 | 0 | 19.18 ± 9.35 |  |
Ventilator days | 0 | 0 | 0 | 13.26 ± 8.66 |  |
Hospital length of stay | 0 | 0 | 10.25 ± 13.46 | 33.11 ± 13.86 | p < .001 |
Ethnicity (% Caucasian) | 18 (30%) | 2 (13%) | 6 (18%) | 34 ( 60%) | p = 0.02 |
Body Mass Index (kg/m2) | 31.47 ± 6.7 | 29.32 ± 5.4 | 31.83 ± 4.2 | 27.20 ± 3.2 | p = 0.09 |
Number of co-morbidities | |||||
 n = 0 | 59 ( 100%) | 5 (33%) | 10 (31%) | 11 (19%) |  |
 n = 1 | 0 | 9 (60%) | 7 (21%) | 12 (21%) |  |
 n = 2 | 0 | 1 (7%) | 6 (18%) | 11 (19%) |  |
 n = 2 +  | 0 | 0 | 9 (28%) | 22 (39%) |  |
Smoking status | |||||
 Smoker | 0 | 0 | 2 (6%) | 0 |  |
 Non-smoker | 58 (98%) | 15 ( 100%) | 24 (75%) | 54 (96%) |  |
 Ex-smoker | 1 (1.6%) | 0 | 6 (18%) | 2 (4%) |  |