TABLE 1.
Characteristics of the study population
| Men | Women | |||
|---|---|---|---|---|
| N | Mean proportion | N | Mean or proportion | |
| Age (y), mean (SD) | 4674 | 45.0 (13.7) | 6622 | 43.3 (13.6) |
| Age class (y), N (%) | 4674 | 6622 | ||
| <30 | 893 (19.1) | 1516 (22.9) | ||
| 30–<40 | 861 (18.4) | 1233 (18.6) | ||
| 40–<50 | 819 (17.5) | 1183 (17.9) | ||
| 50–<60 | 1359 (29.1) | 1939 (29.3) | ||
| ≥60 | 742 (15.9) | 751 (11.3) | ||
| University entrance qualification, N (%) | 4674 | 2510 (53.7) | 6622 | 3439 (51.9) |
| Ever smoker, N (%) | 4674 | 1846 (39.5) | 6622 | 2078 (31.4) |
| BMI (kg/m2), mean (SD) | 4674 | 27.0 (4.8) | 6622 | 25.4 (5.6) |
| BMI class, N (%) | 4674 | 6622 | ||
| <18.5 kg/m2 | 30 (0.6) | 188 (2.8) | ||
| ≥18.5–<25 kg/m2 | 1706 (36.5) | 3620 (54.7) | ||
| ≥25–<30 kg/m2 | 1989 (42.6) | 1658 (25.0) | ||
| ≥30 kg/m2 | 949 (20.3) | 1156 (17.5) | ||
| Medical treatment of acute SARS‐CoV‐2 infection, N (%) | 4674 | 984 (21.1) | 6622 | 1567 (23.7) |
| Percent general health recovered, mean (SD) | 4604 | 90 (14) | 6497 | 88 (15) |
| Percent general health recovered, N (%) | 4604 | 6497 | ||
| 100% recovery | 2262 (49.1) | 2692 (41.4) | ||
| 90% recovery | 1091 (23.7) | 1688 (26.0) | ||
| ≤80% recovery | 1251 (27.2) | 2117 (32.6) | ||
| Percent working capacity, mean (SD) | 4630 | 90 (16) | 6535 | 89 (17) |
| Percent working capacity, N (%) | 4630 | 6535 | ||
| 100% recovery | 2616 (56.5) | 3294 (50.4) | ||
| 90% recovery | 899 (19.4) | 1400 (21.4) | ||
| ≤80% recovery | 1115 (24.1) | 1841 (28.2) | ||
| Newly developed symptom clusters, a N (%) | ||||
| Any symptom (any grade) | 4674 | 2655 (56.8) | 6622 | 4544 (68.6) |
| Any symptom (moderate to strong) | 1591 (34.0) | 3090 (46.7) | ||
| Fatigue (any grade) | 4586 | 1464 (31.9) | 6489 | 2666 (41.1) |
| Fatigue (moderate to strong) | 828 (18.1) | 1720 (26.5) | ||
| Neurocognitive impairment (any grade) | 4600 | 1187 (25.8) | 6523 | 2291 (35.1) |
| Neurocognitive impairment (moderate to strong) | 526 (11.4) | 1175 (18.0) | ||
| Chest symptoms (any grade) | 4617 | 1204 (26.1) | 6548 | 2168 (33.1) |
| Chest symptoms (moderate to strong) | 553 (12.0) | 1029 (15.7) | ||
a
The symptom clusters fatigue (including rapid physical exhaustion or chronic fatigue), cognitive impairment (including concentration difficulties, memory disturbance, and confusion), and chest symptoms (including shortness of breath, chest pain, and wheezing) were counted as present if at least one included symptom was reported at the time of the survey but was not present before the SARS‐CoV‐2 infection.