Table 6.
The relationship between speech problems and patients with or without severe mandibular retrognatia, with or without lip incompetence, and the combined group of neurodevelopmental disorders with possible genetic component (i.e. ADHD, Asperger’s syndrome, autism, mental disorder, mood disorder, behaviour disorder, and learning problems)
| Variable | Speech p. % (n) | No recorded speech p. % (n) | P % (n) |
|---|---|---|---|
| Mandibular retrog. (252) | 40.9 (103) | 59.1 (149) | |
| No mandibular retrog. (1824) | 26.5 (484) | 73.5 (1340) | |
| <0.000 | |||
| Lip incompetence (159) | 37.7 (60) | 62.3 (99) | |
| No lip incompetence (1914) | 27.5 (526) | 72.5 (1388) | |
| 0.006 | |||
| Neurod. disorders (232) | 37.1 (86) | 62.9 (146) | |
| No neurod. disorder (1844) | 27.2 (501) | 72.8 (1343) | |
| 0.002 |
P-values are uncorrected.