Description of the cohort of soccer players
| Values are number (%) or mean (SD; range). | |
| Place of birth | |
| Italy | 597 (80.5) |
| Other countries in Europe | 61 (8.3) |
| Brazil | 20 (2.7) |
| Argentina | 20 (2.7) |
| Uruguay | 9 (1.2) |
| Other (central/south America) | 12 (1.6) |
| Africa | 18 (2.4) |
| Australia | 4 (0.5) |
| Asia | 1 (0.1) |
| Schooling | |
| Junior | 262 (36.4) |
| High school | 445 (61.8) |
| College or more | 13 (1.8) |
| Marital status | |
| Single | 419 (56.8) |
| Married/living with companion | 308 (41.7) |
| Divorced/widow | 11 (1.5) |
| Social status of the family of origin | |
| Number of family members | 3.9 (2.3; 1.0–44.0) |
| Number of rooms/family | 4.8 (2.2; 1.0–30.0) |
| Family members/number of rooms | 0.94 (0.63 0.19–7.3) |