Symptoms associated with COVID-19 per age group from March 2020 to February 2021 in Portugal
| Age groups (years) | ||||||
| 0 | 1–4 | 5–9 | 10–14 | 15–17 | Total | |
| N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | |
| Total | 1075 | 8316 | 11 733 | 14 759 | 11 587 | 47 470 |
| Symptoms | ||||||
| Fever | 513 (47.7%) | 2846 (34.2%) | 2096 (17.9%) | 2317 (15.7%) | 1965 (17.0%) | 9737 (20.5%) |
| Cough | 396 (36.8%) | 2397 (28.8%) | 1920 (16.4%) | 2632 (17.8%) | 2771 (23.9%) | 10 116 (21.3%) |
| Dyspnoea | 34 (3.2%) | 192 (2.3%) | 136 (1.2%) | 180 (1.2%) | 258 (2.2%) | 800 (1.7%) |
| Rhinorrhoea | 376 (35.0%) | 2047 (24.6%) | 1465 (12.5%) | 1927 (13.1%) | 1818 (15.7%) | 7633 (16.1%) |
| Odynophagia | 13 (1.2%) | 364 (4.4%) | 1003 (8.5%) | 1747 (11.8%) | 1831 (15.8%) | 4958 (10.4%) |
| Headache | 1 (0.1%) | 149 (1.8%) | 1351 (11.5%) | 2723 (18.4%) | 2841 (24.5%) | 7065 (14.9%) |
| Abdominal pain | 8 (0.7%) | 199 (2.4%) | 553 (4.7%) | 449 (3.0%) | 252 (2.2%) | 1461 (3.1%) |
| Chest pain | 0 (0.0%) | 11 (0.1%) | 59 (0.5%) | 148 (1.0%) | 214 (1.8%) | 432 (0.9%) |
| Arthralgia | 0 (0.0%) | 9 (0.1%) | 26 (0.2%) | 64 (0.4%) | 61 (0.5%) | 160 (0.3%) |
| Myalgia | 1 (0.1%) | 84 (1.0%) | 436 (3.7%) | 1300 (8.8%) | 1731 (14.9%) | 3552 (7.5%) |
| Nausea and vomiting | 38 (3.5%) | 362 (4.4%) | 403 (3.4%) | 475 (3.2%) | 344 (3.0%) | 1622 (3.4%) |
| Diarrhoea | 107 (10.0%) | 616 (7.4%) | 443 (3.8%) | 523 (3.5%) | 464 (4.0%) | 2153 (4.5%) |
| Convulsions | 1 (0.1%) | 17 (0.2%) | 5 (0.0%) | 10 (0.1%) | 5(0.0%) | 38 (0.1%) |
| Irritability | 19 (1.8%) | 43 (0.5%) | 9 (0.1%) | 9 (0.1%) | 5 (0.0%) | 85 (0.2%) |
| General weakness | 16 (1.5%) | 148 (1.8%) | 221 (1.9%) | 533 (3.6%) | 724 (6.2%) | 1642 (3.5%) |
| Tachycardia | 2 (0.2%) | 20 (0.2%) | 15 (0.1%) | 16 (0.1%) | 12 (0.1%) | 65 (0.1%) |
Percentages of patients presenting a specific symptom from patients presenting with the column symptom.