Table 1.
Socio-demographical and clinical characteristics of the self-reported cohort
| Characteristics | Total N (%) | Female N(%) | Male N(%) | p-value |
|---|---|---|---|---|
| Gender | 905 (100) | 727 (80.3) | 172 (19.0) | |
| Age (years) | ||||
| Median (P25-P75) | 46.0 (40–54) | 46.0 (39–53) | 49.0 (42–56) | |
| Source of income | ||||
| Contract worker | 696 (76.9) | 571 (78.5) | 120 (69.8) | 0.046 |
| Independent worker with contribution | 70 (7.7) | 46 (6.3) | 24 (14.0) | 0.003 |
| Informal worker (no contract nor contribution) | 19 (2.1) | 16 (2.2) | 3 (1.7) | 0.873 |
| Unemployment benefit or other benefits | 25 (2.8) | 18 (2.5) | 7 (4.1) | 0.475 |
| Unemployed without benefit nor social benefit | 9 (1.0) | 7 (1.0) | 2 (1.2) | 0.943 |
| Household chores or caregiver | 13 (1.4) | 12 (1.7) | 1 (0.6) | 0.546 |
| Student | 45 (5,0) | 34 (4,7) | 11 (6.4) | 0.553 |
| Other | 74 (8.2) | 58 (8.0) | 15 (8.7) | 0.711 |
| Health workera | 0.000 | |||
| No | 611 (67.8) | 462 (63.9) | 145 (84.3) | |
| Yes | 290 (36.1) | 261 (36.1) | 27 (15.7) | |
| Previous physical activitya | 0.326 | |||
| Everyday | 152 (16.9) | 123 (17.0) | 28 (16.5) | |
| 2–3 times a week | 334 (37.1) | 268 (37.0) | 65 (38.2) | |
| < 2–3 times a week | 202 (22.4) | 163 (22.5) | 39 (22.9) | |
| No practice | 213 (23.6) | 171 (23.6) | 38 (22.4) | |
| Smoking hàbitb | ||||
| Smoker | 78 (8,6) | 68 (9.4) | 9 (5.3) | 0.180 |
| Non-smoker | 296 (32.7) | 241 (33.1) | 54 (31.6) | 0.649 |
| Ex-smoker | 228 (25.2) | 157 (21.6) | 69 (40.4) | 0.000 |
| BMI (kg/m2) | ||||
| Median (P25-P75) | 24.2 (21.5–27.8) | 23.8 (21.2–27.3) | 25.3 (23.1–28.7) | |
| Comorbidities | ||||
| No | 388 (42.9) | 287 (40.9) | 88 (51.2) | 0.046 |
| Yes | 517 (57.1) | 430 (59.1) | 84 (48.8) | |
| Previous treatments | ||||
| Yes | 436 (48.2) | 363 (49.9) | 70 (40.7) | 0.093 |
| No | 469 (51.8) | 364 (50.1) | 102 (59.3) | |
| Hospitalizationa | ||||
| Yes | 142 (15.7) | 102 (14.0) | 39 (22.7) | |
| Positive at any time by PCR or TARa | 0.533 | |||
| Never positive | 437 (48.5) | 345 (47.6) | 89 (52.4) | |
| Sometime positive | 464 (51.5) | 380 (52.4) | 81 (47.6) | |
| WAVEc | 0.981 | |||
| First wave | 442 (60.0) | 361 (60.1) | 78 (60.0) | |
| Second wave | 253 (34.3) | 205 (34.1) | 45 (34.6) | |
| Third wave | 41 (5.6) | 34 (5.7) | 7 (5.4) | |
| Fourth wave | 1 (0.1) | 1 (0.2) | 0 (0) | |
| Vaccinated (probable)d | 0.903 | |||
| < 27/12/2020 | 882 (97.5) | 708 (97.4) | 168 (97.7) | |
| > 27/12/2020 | 23 (2,5) | 19 (2.6) | 4 (2.3) | |
| Median number of symptoms by period (p25-p75) | ||||
| < 21 days | 24 (15–37) | 25 (16–38) | 20 (11–33) | |
| 22–60 days | 20 (9–32) | 21 (10–34) | 16 (7–28) | |
| ≥3 months | 16 (7–28) | 17 (8–29) | 12 (6–22) |
a4 missings
b1 missing
c168 missings
dBased on the vaccination first date in Spain