Table 1.
Association of frequency of the psychiatric disorders by gender in children with nail biting.
| Disorder | Boys (n = 41) | Girls (n = 22) | ||
| n | % | n | % | |
| Attention deficit hyperactivity disorder (n = 47) | 32 | 78.0 | 15 | 68.2 |
| Oppositional defiant disorder (n = 23) | 16 | 39.0 | 7 | 31.8 |
| Conduct disorder (n= 4) | 4 | 9.8 | 0 | 0.0 |
| Tic disorder(n- = 8) | 7 | 17.1 | 1 | 4.5 |
| Major depressive disorder (n = 4) | 2 | 4.9 | 2 | 9.1 |
| Separation anxiety disorder (n = 13) | 8 | 19.5 | 5 | 22.7 |
| Mental retardation (n = 6) | 5 | 12.2 | 1 | 4.5 |
| Obsessive compulsive disorder (n = 7) | 6 | 14.6 | 1 | 4.5 |
| Enuresis(n = 10) | 10 | 24.4 | 0 | 0.0 |
| Pervasive developmental disorder (n = 2) | 2 | 4.9 | 0 | 0.0 |
| At least one of the above psychiatric disorders (n = 59) | 41 | 100 | 18 | 81.8 |