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Updated: Aug 13, 2026
An Objective and Child-friendly Assessment of Arm Function by Using a 3-D Sensor
Published on: February 12, 2018
Comparing 2 versions of the Chedoke Arm and Hand Activity Inventory with the Action Research Arm Test
Susan R Barreca1, Paul W Stratford, Lisa M Masters
1McMaster University, Hamilton, Ontario, Canada. barreca@hhsc.ca
Background And Purpose:
The Chedoke Arm and Hand Activity Inventory (CAHAI) is a new, validated upper-limb measure that uses a 7-point quantitative scale in order to assess functional recovery of the arm and hand after a stroke. The purposes of this study were: (1) to determine whether the longitudinal validity of scores on 2 versions of a new upper-limb measure, the CAHAI (CAHAI-9 and CAHAI-13), was greater than that of scores on the Action Research Arm Test (ARAT) and (2) to determine whether the cross-sectional and longitudinal validity of the CAHAI-13 scores was greater than that of the CAHAI-9 scores.
Subjects:
One hundred five people with upper-limb dysfunction following a stroke were stratified into 2 impairment groups (mild to moderate and severe), which were expected to change by different amounts.
Methods:
The CAHAI-13 and ARAT were administered twice (time between assessments varied from 2 to 6 weeks). Receiver operating characteristic curves, Pearson product moment coefficient of correlation, and regression analyses were used.
Results:
Receiver operating characteristic curve areas (CAHAI-13=0.86, CAHAI-9=0.82, ARAT=0.72) were significantly greater for the CAHAI versions. Scores on both CAHAI versions had identical levels of cross-sectional validity.
Discussion And Conclusion:
Both CAHAI versions demonstrated more sensitivity to change than the ARAT. It remains unclear whether the CAHAI-9 provides precise estimates of CAHAI-13 scores at the individual level.
