Table 1 Socio-demographic characteristics of the cohort
| Â | Men | Women | Total | |||
|---|---|---|---|---|---|---|
n | % | n | % | n | % | |
| Â | 14,970 | Â | 15,940 | Â | 30,910 | Â |
Person-years | 195,794 | Â | 211,419 | Â | 407,213 | Â |
Age at the baseline | ||||||
 Mean (± SD) | 38.9 (± 24.2) |  | 42.8 (± 25.4) |  | 40.9 (± 24.9) |  |
Age groups | ||||||
  <  = 35 years | 6941 | 46.4 | 6495 | 40.8 | 13,436 | 43.5 |
 36–64 years | 5323 | 35.6 | 5656 | 35.5 | 10,979 | 35.5 |
  >  = 65 years | 2706 | 18.0 | 3789 | 23.7 | 6495 | 21.0 |
Municipality | ||||||
 Abbadia San Salvatore | 4392 | 29.3 | 4829 | 30.3 | 9221 | 29.8 |
 Arcidosso | 2867 | 19.2 | 2908 | 18.2 | 5775 | 18.7 |
 Castel del Piano | 2899 | 19.4 | 3130 | 19.6 | 6029 | 19.5 |
 Piancastagnaio | 2671 | 17.8 | 2835 | 17.8 | 5506 | 17.8 |
 Santa Fiora | 2141 | 14.3 | 2238 | 14.1 | 4379 | 14.2 |
Years of residence | ||||||
  >  = 15 years | 8801 | 58.8 | 9612 | 60.3 | 18,413 | 59.6 |
Socio-economic status | ||||||
 High | 8313 | 55.5 | 8635 | 54.1 | 16,948 | 54.8 |
 Medium | 3114 | 20.8 | 3492 | 21.9 | 6060 | 21.4 |
 Low | 3475 | 23.2 | 3743 | 23.5 | 7218 | 23.4 |
 Missing | 68 | 0.5 | 68 | 0.4 | 136 | 0.4 |