Psychometric properties of the Persian version of the oral motor assessment scale in children and adolescents with cerebral palsy

Abstract

The Oral Motor Assessment Scale (OMAS) is a diagnostic tool used to assess the oral motor skills in individuals with neurological and neuromuscular disorders. This assessment was developed by Brazilian researchers and for the first time, its validity and reliability was examined in Brazil. The purpose of the present study was to examine the validity and reliability of the adopted Persian version of the OMAS (OMAS-P) to assess the oral skills of Iranian individuals with cerebral palsy (CP). In this non-experimental descriptive-analytical study 120 people (60 children and adolescents with CP) aged 3 to 15 years and 60 healthy subjects) participated. The research was carried out in number of stages including translation and adaptation of the OMAS to Persian (OMAS-P) in a forward-backward way. The oral motor skills functionality of the 120 people was examined using the OMAS-P. To assess the repeatability and reliability of the OMAS-P the assessments was repeated on the participants with CP disorder after two weeks. Results corresponding to this study indicated a reasonable agreement (Kappa >0.7) for all the OMAS-P items. The mean values of the OMAS-P items were appreciably different between the two groups (p < 0.001). The Persian version of the OMAS (OMAS-P) indicated consistent psychometric properties and can be used as a reliable tool for oral motor skills assessment in people with CP. However, it seems that by specifying factors such as the time frame for the OMAS, the position of the child during assessment, and whether or not parents use facilitating techniques, the comprehensiveness and efficiency of the OMAS data will also upgrade.

Keywords:

• Oral motor assessment scale
• cerebral palsy
• feeding disorder
• oral motor skills

Acknowledgements

The authors sincerely acknowledge Dr. A. De Oliveira Lira Ortega from Group for the Study and Treatment of Special Needs Patients of the Pediatric Dentistry Discipline of the University of São Paulo, São Paulo, Brazil for her cooperation and agreement to translate the Oral Motor Assessment Scale (OMAS). The authors of the article are also very grateful to the families of people with CP who participated in this study; and to the colleagues of private rehabilitation clinics in the western region of Tehran and Alborz province. Finally, we would like to appreciate Dr. Jafar Zanganeh for his sincere guidance.

Disclosure statement

No potential conflict of interest was reported by the authors.