Table 1 General characteristics of cases and population-based controls
From: Risk factors for severe COVID-19 in the young—before and after ICU admission
Cases | Controls | |
|---|---|---|
Number (n) | 4921 | 49 210 |
Age (mean (SD)) | 62.45 (13.00) | 62.45 (13.00) |
Age group (%) | ||
Less than 50 | 817 (16.6) | 8580 (17.4) |
Between 50 and 64 | 1797 (36.5) | 18 120 (36.8) |
More than 65 | 2307 (46.9) | 22 510 (45.7) |
Sex (women (%)) | 1447 (29.4) | 14 470 (29.4) |
Income category (%) | ||
1 | 2146 (43.7) | 15 863 (32.3) |
2 | 1526 (31.1) | 16 483 (33.6) |
3 | 1237 (25.2) | 16 772 (34.1) |
Education (%) | ||
Primary | 1385 (29.1) | 10 216 (21.1) |
Secondary | 2141 (45.0) | 22 023 (45.5) |
Post-secondary | 1236 (26.0) | 16 196 (33.4) |
Region of birth (%) | ||
Africa | 213 (4.3) | 1199 (2.4) |
Asia | 861 (17.5) | 4286 (8.7) |
EU15, excl. Nordic | 98 (2.0) | 842 (1.7) |
Europa, excl. EU15 and Nordic | 436 (8.9) | 3250 (6.6) |
North America | 19 (0.4) | 176 (0.4) |
Nordic countries, excl. Sweden | 202 (4.1) | 1669 (3.4) |
Oceania | 1 (0.0) | 11 (0.0) |
Unknown | 5 (0.0) | 8 (0.0) |
Soviet Union | 3 (0.1) | 50 (0.1) |
Sweden | 2 989 (60.7) | 37 224 (75.6) |
South America | 94 (1.9) | 495 (1.0) |
Pre-existing diagnoses (%) | ||
Hypertension | 1753 (35.6) | 11 524 (23.4) |
Kidney disease | 242 (4.9) | 781 (1.6) |
Rheumatoid arthritis | 132 (2.7) | 604 (1.2) |
Systemic inflammatory disease | 136 (2.8) | 718 (1.5) |
Inflammatory bowel disease | 81 (1.6) | 658 (1.3) |
Venous thromboembolism | 270 (5.5) | 1570 (3.2) |
Obesity | 529 (10.7) | 1770 (3.6) |
Chronic obstructive pulmonary disease | 231 (4.7) | 1273 (2.6) |
Myocardial infarction | 275 (5.6) | 1871 (3.8) |
Heart failure | 296 (6.0) | 1635 (3.3) |
Atrial fibrillation | 426 (8.7) | 3222 (6.5) |
Type 1 diabetes | 202 (4.1) | 964 (2.0) |
Asthma | 388 (7.9) | 1799 (3.7) |
Type 2 diabetes | 948 (19.3) | 4223 (8.6) |
Angina | 284 (5.8) | 1973 (4.0) |
Malignancy | 431 (8.8) | 4142 (8.4) |