Table II.
Characteristics at cohort entry for persons with hospital-diagnosed atopic dermatitis compared with a matched comparison cohort, Denmark, 1977-2013
| Characteristic | Atopic dermatitis, n (%) | Matched comparators, n (%) |
|---|---|---|
| Total | 13,126 (100) | 124,211 (100) |
| Sex | ||
| Male | 5630 (43) | 54,024 (43) |
| Female | 7496 (57) | 70,187 (57) |
| Birth year | ||
| 1947-1956 | 1266 (10) | 11,800 (9) |
| 1957-1966 | 2631 (20) | 24,525 (20) |
| 1967-1982 | 9229 (70) | 87,886 (71) |
| Age at start of follow-up, y | ||
| 0-19 | 6509 (50) | 64,274 (52) |
| 20-39 | 5208 (40) | 47,165 (38) |
| 40-63 | 1409 (11) | 12,772 (10) |
| Allergic asthma or rhinitis | 842 (6) | 1002 (1) |
| Sleep apnea | 6 (0) | 54 (0) |
| Hospital-diagnosed obesity | 88 (1) | 835 (1) |
| Rheumatic disease | 110 (1) | 498 (0) |
| Chronic kidney disease | 35 (0) | 87 (0) |
| COPD | 1536 (12) | 5648 (5) |
| Cardiovascular disease | 459 (3) | 3149 (3) |
| Diabetes mellitus | 84 (1) | 771 (1) |
| Hyperthyroidism | 32 (0) | 325 (0) |
| Alcohol-related disease | 243 (2) | 1681 (1) |
| Educational level | ||
| Short-term education | 2608 (20) | 23,380 (19) |
| Medium-term education | 5172 (39) | 53,272 (43) |
| Long-term education | 5109 (39) | 45,512 (37) |
| Missing | 237 (2) | 2047 (2) |
All variables in the table are measured at start of follow-up.
COPD, Chronic obstructive pulmonary disease.