Table 1 Demographic and baseline characteristics of the 20% subsample that completed the SF-36 and ESS questionnaire, compared with the full study population.
| Â | Entire SILC study population N = 16 078 | 20% subsample N = 3214 |
|---|---|---|
| Â | n (%) | n (%) |
Region | Â | Â |
   Urban | 8072 (50.2) | 1585 (49.3) |
   Rural | 8006 (49.8) | 1629 (50.7) |
Sex | Â | Â |
   Female | 8390 (52.2) | 1678 (52.2) |
   Male | 7688 (47.8) | 1536 (47.8) |
Age (years) | Â | Â |
   18-29 | 3680 (22.9) | 749 (23.3) |
   30-39 | 3675 (22.9) | 736 (22.9) |
   40-49 | 3812 (23.7) | 757 (23.6) |
   50-59 | 2468 (15.4) | 486 (15.1) |
   60-69 | 1503 (9.3) | 309 (9.6) |
   70-80 | 940 (5.8) | 177 (5.5) |
Smokers | 4431 (27.6) | 859 (26.7) |
Alcohol consumption (any) | 3262 (20.3) | 684 (21.3) |
Body mass index (kg/m 2 ; mean ± SD) | 22.6 ± 3.3 | 22.6 ± 3.4 |