| 
 | Father | Mother | ||
| N | % | N | % | |
| Age range | 
 | 
 | 
 | 
 | 
| ˂20 | 0 | 0.0 | 9 | 3.8 | 
| 20 - 34 | 120 | 50.6 | 172 | 72.6 | 
| ≥35 | 117 | 49.4 | 56 | 23.6 | 
| Level of education | 
 | 
 | 
 | 
 | 
| Unschooled | 7 | 3.0 | 5 | 2.1 | 
| Primary | 85 | 35.9 | 93 | 39.2 | 
| Secondary | 107 | 45.1 | 114 | 48.2 | 
| Superior | 38 | 16.0 | 25 | 10.5 | 
| Professional situation | 
 | 
 | 
 | 
 | 
| Senior | 16 | 6.8 | 9 | 3.8 | 
| Middle management | 40 | 16.9 | 22 | 9.3 | 
| Qualified worker | 127 | 53.6 | 24 | 10.1 | 
| Maneuver | 1 | 0.4 | 21 | 8.9 | 
| Self-employed worker | 14 | 5.9 | 47 | 19.8 | 
| High | 2 | 0.8 | 14 | 5.9 | 
| Student | 2 | 0.8 | 8 | 3.4 | 
| Unemployed | 35 | 14.8 | 92 | 38.8 | 
| Socio-economic level | 
 | 
 | 
 | 
 | 
| Low | 171 | 72.2 | 189 | 79.7 | 
| Middle | 63 | 26.6 | 45 | 19.0 | 
| High | 3 | 1.3 | 3 | 1.3 | 
| Smoking | 
 | 
 | 
 | 
 | 
| Yes | 22 | 9.3 | 3 | 1.3 | 
| No | 215 | 90.7 | 234 | 98.7 | 
| Total | 237 | 100 | 237 | 100 |