Table 1.
Characteristics of the study population
| Characteristics | N (%) |
|---|---|
| Total | 9,624,428 (100.0) |
| Female | 4,814,553 (50.0) |
| Age (years) | |
| 1–9 | 1,041,469 (10.8) |
| 10–19 | 1,046,237 (10.9) |
| 20–29 | 1,306,883 (13.6) |
| 30–39 | 1,203,053 (12.5) |
| 40–49 | 1,302,755 (13.5) |
| 50–59 | 1,220,303 (12.7) |
| 60–69 | 1,146,021 (11.9) |
| 70–79 | 856,218 (8.9) |
| 80+ | 501,489 (5.2) |
| Mean age (years) (SD) | 41.4 (23.6) |
| County | |
| Stockholm | 2,174,039 (22.6) |
| Uppsala | 346,325 (3.6) |
| Södermanland | 277,220 (2.9) |
| Östergötland | 436,474 (4.5) |
| Jönköping | 339,444 (3.5) |
| Kronoberg | 186,374 (1.9) |
| Kalmar | 231,956 (2.4) |
| Gotland | 56,639 (0.6) |
| Blekinge | 152,136 (1.6) |
| Skåne | 1,272,311 (13.2) |
| Halland | 308,576 (3.2) |
| Västra Götaland | 1,612,184 (16.8) |
| Värmland | 270,128 (2.8) |
| Örebro | 284,574 (3.0) |
| Västmanland | 258,458 (2.7) |
| Dalarna | 274,870 (2.9) |
| Gävleborg | 275,551 (2.9) |
| Västernorrland | 238,772 (2.5) |
| Jämtland | 124,686 (1.3) |
| Västerbotten | 258,371 (2.7) |
| Norrbotten | 245,340 (2.5) |
| Prognostic factors for severe COVID-19 | |
| Age 70+ years | 1,357,707 (14.1) |
| Cardiovascular disease | 708,090 (7.4) |
| Cancer | 129,155 (1.3) |
| COPD | 78,516 (0.8) |
| Severe asthma | 215,793 (2.2) |
| Diabetes | 471,015 (4.9) |
| Number of prognostic factors for severe COVID-19 | |
| At least one | 2,131,319 (22.1) |
| At least two | 649,935 (6.8) |
| At least three | 154,746 (1.6) |
On 1st January 2016