The responsiveness and validity of the Early Clinical Assessment of Balance in toddlers with cerebral palsy: Brief report.

Purpose: The Early Clinical Assessment of Balance (ECAB) is a measure of postural stability for children with cerebral palsy (CP). The purpose of this research was to investigate the relationship between the ECAB and Gross Motor Function Measure-66 (GMFM-66) and to determine the responsiveness of the ECAB in children with CP under three years of age. Methods: Twenty seven children (mean age of 25 months) participated. Data were collected before and after 3 and 6 months of physical therapy. Responsiveness was calculated using standardized response means (SRM). Results: Significant relationships were observed between the ECAB, GMFM-66 score (r = 0.87), and GMFM subscales (r = 0.63-0.86). A moderate effect size (SRM = 0.62) and a large effect size (SRM = 0.92) for the ECAB were found over the 3- and 6-month intervention periods, respectively. Conclusion: These results support the validity and responsiveness of the ECAB in young children with CP.