Cohort characteristics at study entry (n=31 158)
| n | % | |
| Service classification | ||
| A (healthy) | 28 520 | 91.5 |
| B (minor health problems) | 2227 | 7.1 |
| C or D | 192 | 0.6 |
| Missing | 219 | 0.7 |
| Smoking status | ||
| Yes | 10 707 | 34.4 |
| No | 16 066 | 51.6 |
| Missing | 4385 | 14.1 |
| Cigarettes/day among smokers | ||
| <10 cigarettes/day | 2010 | 18.8 |
| 10–19 cigarettes/day | 5657 | 52.8 |
| ≥20 cigarettes/day | 2862 | 26.7 |
| Missing | 178 | 1.7 |
| Alcohol consumption | ||
| Yes | 19 052 | 61.1 |
| No | 8097 | 26.0 |
| Missing | 4009 | 12.9 |
| BMI | ||
| Underweight (BMI <18.5) | 1489 | 4.8 |
| Normal weight (18.5≤BMI<25) | 25 939 | 83.2 |
| Overweight (25≤BMI<30) | 3294 | 10.6 |
| Obesity (BMI ≥30) | 421 | 1.4 |
| Missing | 15 | 0.0 |
| Body surface area | ||
| <2 m2 | 26 729 | 85.8 |
| ≥2 m2 | 4415 | 14.2 |
| Missing | 14 | 0.0 |
| Overall PC | ||
| Bad | 1326 | 4.3 |
| Satisfying | 6294 | 20.2 |
| Good | 12 707 | 40.8 |
| Excellent | 5503 | 17.7 |
| Missing | 5328 | 17.1 |
| BMI and PC cross-category | ||
| BMI <25 and good/excellent PC | 16 930 | 54.3 |
| BMI ≥25 and good/excellent PC | 1277 | 4.1 |
| BMI <25 and bad/satisfying PC | 6001 | 19.3 |
| BMI ≥25 and bad/satisfying PC | 1618 | 5.2 |
| Missing | 5332 | 17.1 |
BMI, body mass index; PC, physical condition.