Table 1. Baseline Characteristics of HUNT2 and HUNT3 Participants.
| Characteristic (N = 54 567) | Ever Asthma, No. (%) | |
|---|---|---|
| No (n = 48 606) | Yes (n = 5961) | |
| Female | 25 564 (52.6) | 3257 (54.6) |
| Smoking | ||
| Never | 22 162 (45.6) | 2371 (39.8) |
| Former | 13 119 (27.0) | 1788 (30.0) |
| Current | 13 325 (27.4) | 1802 (30.2) |
| Physical activity | ||
| Inactive | 8910 (18.3) | 1194 (20.0) |
| Low | 13 880 (28.6) | 1637 (27.5) |
| Medium | 20 102 (41.4) | 2369 (39.7) |
| High | 5714 (11.8) | 761 (12.7) |
| Alcohol use | ||
| Abstainers | 15 987 (32.9) | 2070 (34.7) |
| Light | 25 225 (51.9) | 3014 (50.6) |
| Moderate/heavy | 7394 (15.2) | 877 (14.7) |
| Education | ||
| <10 y | 14 385 (29.6) | 1872 (31.4) |
| 10-12 y | 22 435 (46.2) | 2812 (47.2) |
| >12 y | 11 786 (24.2) | 1277 (21.4) |
| Age, mean (SD), y | 46.6 (15.9) | 46.0 (16.1) |
| BMI, mean (SD) | 26.1 (4.0) | 27.0 (4.6) |
| W/H ratio, mean (SD) | 0.84 (0.08) | 0.86 (0.08) |
| C-reactive protein, mean (SD), μg/mL | 2.4 (5.3) | 3.2 (7.4) |
| Diabetes mellitus | 1081 (2.2) | 189 (3.2) |
Abbreviations: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); HUNT, The Nord-Trøndelag Health Study; W/H, waist-to-hip.