Table 1 Characteristics of participants according to COVID-19 status groups
From: Differential DNA methylation 7 months after SARS-CoV-2 infection
PCR-positive seropositive (group 1) | PCR-positive seronegative (group 2) | Exposed seropositive (group 3) | Exposed seronegative (group 4) | Unexposed controls (group 5) | All study subjects | |
|---|---|---|---|---|---|---|
n | 136 | 18 | 43 | 70 | 79 | 346 |
Sex | ||||||
Female | 61 (45%) | 12 (67%) | 24 (56%) | 33 (47%) | 39 (49%) | 169 (49%) |
Male | 75 (55%) | 6 (33%) | 19 (44%) | 37 (53%) | 40 (51%) | 177 (51%) |
Age (years) | ||||||
14—19 | 1 (0.7%) | 0 (0%) | 6 (14%) | 5 (7.1%) | 10 (13%) | 22 (6.4%) |
20—34 | 26 (19%) | 6 (33%) | 14 (33%) | 24 (34%) | 14 (18%) | 84 (24.3%) |
35—49 | 62 (46%) | 7 (39%) | 10 (23%) | 23 (33%) | 33 (42%) | 135 (39%) |
50—64 | 37 (27%) | 3 (17%) | 8 (19%) | 14 (20%) | 15 (19%) | 77 (22.3%) |
65—79 | 10 (7.4%) | 2 (11%) | 5 (12%) | 4 (5.7%) | 3 (3.8%) | 24 (6.9%) |
80 + | 0 (0%) | 0 (0%) | 0 (0%) | 0 (0%) | 4 (5.1%) | 4 (1.2%) |
Median | 43 | 39.5 | 35 | 40 | 44 | 41 |
BMI (kg/m2) | ||||||
< 18.5 | 1 (0.7%) | 0 (0%) | 2 (4.7%) | 3 (4.3%) | 2 (2.5%) | 8 (2.3%) |
18.5—25 | 80 (59%) | 13 (72%) | 27 (63%) | 43 (61%) | 42 (53%) | 205 (59.2%) |
25—30 | 47 (35%) | 5 (28%) | 7 (16%) | 22 (31%) | 23 (29%) | 104 (30.1%) |
> 30 | 8 (5.9%) | 0 (0%) | 7 (16%) | 2 (2.9%) | 12 (15%) | 29 (8.4%) |
Median | 24.1 | 24.4 | 22.8 | 22.8 | 24.2 | 23.7 |
Smoking status | ||||||
Current smoker | 21 (15.4%) | 3 (16.7%) | 1 (2.3%) | 10 (14.3%) | 13 (16.5%) | 46 (13.3%) |
Non-current smoker | 115 (84.6%) | 15 (83.3%) | 42 (97.7%) | 60 (85.7%) | 66 (83.5%) | 300 (86.7%) |
Time from PCR to visit | ||||||
Median (days) | 243 | 233 | ||||
IQR (days) | 229.5–258 | 227.8–245 | ||||