Assisting Hand Assessment and Children's Hand-use Experience Questionnaire – Observed Versus Perceived Bimanual Performance in Children with Unilateral Cerebral Palsy

ABSTRACTAims: To explore the differences, relationship, and extent of agreement between the Assisting Hand Assessment (AHA), measuring observed ability to perform bimanual tasks, and the Children's Hand-Use Experience Questionnaire (CHEQ), assessing experienced bimanual performance. Methods: This study investigates a convenience sample of 34 children (16 girls) with unilateral cerebral palsy aged 6–18 years (mean 12.1, SD 3.9) in a cross-sectional design. Results: The AHA and CHEQ subscales share 8–25% of their variance (R2). Bland–Altman plots for AHA and all three CHEQ subscales indicate good average agreement, with a mean difference approaching zero but large 95% confidence intervals. Limits of agreement were extremely wide, indicating considerable disagreement between AHA and CHEQ subscales. Conclusion: AHA and CHEQ seem to measure different though somewhat related constructs of bimanual performance. Results of this investigation reinforce the recommendation to use both instruments to obtain complemen...