Document Type : Original Articles


1 Biostatistics Department, Shiraz University of Medical Sciences, Shiraz, Iran.

2 Biostatistics Department, Shiraz University of Medical Sciences, Shiraz, Iran/ Instructor of Biostatistics, Sirjan School of Medical Sciences. Sirjan, Iran

3 Department of Occupational Therapy, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran



Background: occupational therapy outcome for motor improvement are different among children with cerebral palsy to determine the effective factors related to gross motor achievement in children with CP the present project was designed.
Method: In a quasi-experimental study 59 CP patients with Gross Motor Function Classification System (GMFCS) 1-4 evaluated by Gross Motor Function measure (GMFM). They were referred to four centers in Shiraz, Iran in 2015. Results of therapy were monitoring five times during six months for each participant, according to achievement to stages of GMFM and marginal modeling method was utilized.
Results: The results revealed the significance of some factors including, age at starting occupational therapy services, number of sessions per week, type of spastic, level four of socio economic status (SES), grade two of GMFCS and time effect on the outcome (upgrade to a higher level on each occasion) (p <0.05).
Conclusion: Based on the odds ratio (OR) values, the number of occupational therapy sessions per week had the most positive effect on gross motor function upgrade for at least two half times. Age at starting occupational therapy service was the second important factor on the outcome. However, spending more time for therapy and early starting relate to family characteristics and also financial support.