Method Eighty four children with CP were participated in this study. Non-speech mechanism function was investigated with a simple scale of oral motor status (OMS) and a feeding-swallowing evaluaton protocol for children (FEP-C). Higher score represents more severe in dysfunction in both tests. As well, Gross motor function classification system (GMFCS), the nutritional status based on body mass index were assessed in these subjects. GMFCS level I to III were grouped into high functioning group while GMFCS level IV and V were grouped into low functioning group.

Results
Fifty seven (67.9%) individuals with CP showed dysphagia symptoms (OMS sore ≥1). The mean scores of non-speech mechanism function in low functioning group were higher than in high functioning group (p＜ 0.05). The mean scores of both OMS and FEP-C were higher in individuals with underweight (p＜0.05). Compared to high functioning individuals with CP, underweight was more prevalent along with higher scores in oral motor function in low functioning group. OMS scores were significantly correlated with the mean scores of non-speech mechanism in all subareas (p＜0.05).

Conclusion Non-speech mechanism function was closely related with GMFCS level. As well, this study revealed that the oromotor function and nutritional status in these individuals with CP related with non-speech mechanism function.