**5. Conclusions**

Although the results of this study showed overall substantial agreement of the CFCS, regular re-evaluation of the CFCS levels is necessary. The differences in each research periods between the first and third ratings, with one-year intervals, suggested that there were some differences in the stability of the CFCS according to the children's ages. In future research, systematic and periodic evaluation of the CFCS levels is warranted for verifying the differences in the change rate according to age. In addition to the periodical evaluation, it is considered necessary to include changes in communication methods and comorbid diseases such as seizures after communication intervention. The results showed that the CFCS levels in children with CP increased and decreased in this study, but the factors that influenced these changes should be confirmed in further studies. Understanding why children's CFCS levels change can help with their prognosis. In addition, information on how the communication function of children with CP develops over time will help

the clinician plan treatment strategies accordingly. Finally, insight into the aging-related impact on communication function in children with CP can be used to develop policies and programs that can help prepare such children for adulthood.

**Funding:** The author received no funding for this research.

**Institutional Review Board Statement:** The present study was approved by the Research Ethics Board of Jeonju University (Jeonju University IRB-1041042-2013-1).

**Informed Consent Statement:** Informed consent was obtained from the parents of all participants involved in the study.

**Acknowledgments:** Thank you to the respondents of this assessment.

**Conflicts of Interest:** The author declares no conflict of interest.

#### **References**


