Psychometric validation of comprehensive coordination scale to assess the advanced coordination ability in people with stroke.
Peiming Chen, Shamay S Ng, Cynthia Y Lai and 11 others
PMID 40658077WHAT IT FOUND
The Comprehensive Coordination Scale reliably measures motor coordination in chronic stroke survivors.
A total score below 62.5 effectively distinguishes those with stroke from healthy older adults. However, the scale's bilateral and unaffected-side subscores showed poor reliability or diagnostic power.
Key findings
01The CCS-Total score demonstrated excellent test-retest reliability, with an ICC of 0.953.
02A CCS-Total cut-off score of 62.5 differentiated people with stroke from healthy older adults with 83.9% sensitivity and 83.9% specificity.
03The CCS-Unaffected side subscore showed poor test-retest reliability (ICC 0.333) and failed to distinguish between stroke survivors and healthy older adults.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
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What it does not show
The study only included people with chronic stroke (more than 1 year post-injury) who could walk independently and had some arm movement. It does not apply to acute stroke patients or those with severe impairments. Only 35 of the 62 stroke participants could complete the bilateral coordination items, meaning the reliability and validity of that subscale are based on a much smaller, potentially higher-functioning subset. The healthy control group was not matched for sex, weight, or BMI, which may have influenced the coordination scores. The study did not include measures of activity or participation, so it is unclear how CCS scores relate to real-world functional outcomes.
Declared interests
The authors declared no conflicts of interest. The work was supported by a General Research Grant from the Research Grants Council of the Hong Kong Special Administrative Region, China.
The easy way to misread this
Do not use the CCS-Unaffected side or CCS-Bilateral subscores to judge a patient's progress or baseline. The unaffected side score had poor reliability (ICC 0.333), and the bilateral score had poor diagnostic power and was not completed by nearly half the stroke group.