Table 1 Socio-demographic and medical characteristics of participants at inclusion.
Total 830 participants N (%) | |
|---|---|
Age at inclusion (years), median (IQR) | 43 (19–52) |
Female sex | 512 (61.7) |
Socio-professional category | |
Upper | 350 (42.2) |
Lower | 174 (21.0) |
Inactive | 297 (35.8) |
Missing | 9 (1.1) |
Number of household members | |
1 | 33 (4.0) |
2 | 117 (14.1) |
3 | 133 (16.0) |
4 | 249 (30.0) |
5 | 135 (16.3) |
6 or more | 42 (5.1) |
Missing | 121 (14.6) |
Smoking status | |
Active smoker | 87 (10.5) |
Former smoker | 159 (19.2) |
Non-smoker | 582 (70.1) |
Missing | 2 (0.2) |
Statin | 24 (2.9) |
Medical conditions | |
Diabetes | 28 (3.3) |
Chronic respiratory disease | 63 (7.6) |
Cardiovascular disease | 101 (12.2) |
Immunodepression | 7 (0.8) |
Chronic kidney failure | 3 (0.4) |
History of cancer | 21 (2.5) |
Dyslipidemia | 35 (4.2) |
SARS-CoV-2 infection | 491 (59.2) |
Predominant strain at the time of infection | N (% of infections) |
Historical strain | 284 (57.8) |
Alpha and Beta/Gamma | 52 (10.6) |
Delta | 13 (2.7) |
Omicron | 142 (28.9) |
Identification of the date of infection | N (% of infections) |
Date of RT-PCR, antigen test, or medical diagnosis | 243 (49.5) |
Date of symptom onset | 166 (33.8) |
Date of SARS-CoV-2 circulation in the household | 52 (10.6) |
Midpoint between visits or between January 1st, 2020 and first visit | 30 (6.1) |
