Table 1. Characteristics of the Psoriasis Cohort and the General Population Comparison Cohort.
| Variable | Cohort, No. (%) | |
|---|---|---|
| Psoriasis | General Population | |
| All | 13 675 | 141 040 |
| Male | 6891 (50.4) | 71 172 (50.5) |
| Birth year | ||
| 1900-1919 | 1477 (10.8) | 14 016 (9.9) |
| 1920-1939 | 3276 (24.0) | 33 765 (23.9) |
| 1940-1959 | 4992 (36.5) | 52 699 (37.4) |
| 1960-1979 | 3074 (22.5) | 31 727 (22) |
| 1980-1995 | 856 (6.3) | 8833 (6.3) |
| Age at first psoriasis diagnosis, y | ||
| 0-19 | 638 (4.7) | NA |
| 20-39 | 3055 (22.3) | NA |
| 40-59 | 5105 (37.3) | NA |
| 60-79 | 4207 (30.8) | NA |
| ≥80 | 670 (5.0) | NA |
| Educational level attainmenta | ||
| Short-term | 5218 (38.2) | 48 531 (34.4) |
| Medium-term | 4799 (35.1) | 51 461 (36.5) |
| Long-term | 1873 (13.7) | 24 659 (17.5) |
| Missing | 1785 (13.1) | 16 389 (11.6) |
| Comorbidities | ||
| Diabetes | 929 (6.8) | 3416 (2.4) |
| Stroke | 403 (2.9) | 2011 (1.4) |
| Acute myocardial infarction | 433 (3.2) | 2697 (1.9) |
Abbreviation: NA, not available.
a
Short-term: completion of primary education (7-10 years), medium-term: vocational training (3- to 4-year programs completed after primary education) or high school (3-year secondary education, known as gymnasium), long-term: university education at bachelor or master degree level.