children and adolescents with CP are at increased risk of developing mental health difficulties, particularly anxiety disorders, compared with their typically developing peers. this study was to investigate the correlation between anxiety, spasticity and balance in children with cerebral palsy.

forty children with hemiplegia and diplegia were recruited from outpatient clinic of faculty of physical therapy, Cairo University and October 6 University. These children aged from 4 to 8 years old. Anxiety, motor function, spasticity and balance were assessed by Modified Yale Pre-Operative Anxiety Scale ((m -YPAS), The Gross Motor Functional Measurement-88 (GMFM-88), the modified Ashworth scale and Biodex balance system respectively.

Inclusion Criteria:

• age 4-8 years from both genders
• diagnosed as hemiplegia and diplegia
• Gross Motor Function Classification System (GMFCS) levels I or II
• spasticity grade of 1 or I+ on the modified Ashworth Scale

Exclusion Criteria:

• significant visual, auditory, or perceptual deficits
• uncontrolled seizures
• acute illness

POWER statistical programming was used to test size estimation [Exact Correlation: Bivariate normal model, α = 0.05, β = 0.20, number of variables = 2, correlation ρH0 = 0, correlation ρH1 = 0.81, and coefficient of determination ρ2 = 0.66 and shown that the suitable sample size of current study was N = 13]. This coefficient of determination ρ2 was calculated from a pilot study of ten participants (between grades of spasticity and gross motor function).