| Profession common to both parents
| Unemployed/no profession | NS | ||
| Yes | 3 (8.8) | 31 (91.2) | ||
| No | 188 (18.5) | 827 (81.5) | ||
| Manual labourer/employee | NS | |||
| Yes | 34 (15.9) | 180 (84.1) | ||
| No | 157 (18.8) | 678 (81.2) | ||
| Agriculteur/exploitant | NS | |||
| Oui | 2 (20.0) | 8 (80.0) | ||
| Non | 189 (18.2) | 850 (81.8) | ||
| Self-employed/business owner | NS | |||
| Yes | 5 (20.8) | 19 (79.2) | ||
| No | 186 (18.2) | 839 (81.9) | ||
| Lowsocio-professional category | <0.001 | |||
| Yes | 113 (15.6) | 613 (84.4) | ||
| No | 78 (24.2) | 245 (75.9) | ||
| Profession of one parent | Intermediate level professions or administrative managers | NS | ||
| Yes | 56 (19.6) | 229 (80.4) | ||
| No | 139 (17.9) | 639 (82.1) | ||
| Teachers | NS | |||
| Yes | 21 (18.8) | 91 (81.3) | ||
| No | 173 (18.3) | 773 (81.7) | ||
| Liberal professions/upper level management | 0.06 | |||
| Yes | 48 (22.8) | 163 (77.3) | ||
| No | 145 (17.1) | 704 (82.9) | ||
| Treatment | Willing to accepttreatment | <0.0001 | ||
| Yes | 75 (12.5) | 524 (87.5) | ||
| No | 128 (24.3) | 399 (75.7) |