Evaluation of a short assessment for upper extremity activity capacity early after stroke.

• To explore the concurrent validity, responsiveness, and floor- and ceiling-effects of the 2 items of Action Research Arm Test (ARAT-2) in comparison with the original ARAT and the Fugl-Meyer Assessment for Upper Extremity (FMA-UE) during the first 4 weeks post-stroke.A prospective longitudinal cohort study.A non-selected cohort of 117 adults with first-ever stroke and impaired upper extremity function.The activity capacity and motor function was assessed with ARAT and FMA-UE at 3 days, 10 days and 4 weeks post-stroke.Correlation between ARAT-2 and the other assessment scales was high (r=0.920.97) and ARAT-2 showed statistically significant changes between all time-points (effect size, r=0.310.48). The effect sizes for the change in ARAT and FMA-UE varied from 0.44 to 0.53. ARAT-2, similarly to ARAT, showed a floor effect at all time-points. The ceiling effect was reached earlier using ARAT-2 than with ARAT and FMA-UE.ARAT-2 appears to be valid and a responsive short assessment for upper extremity activity capacity, and suitable for use in the acute stage after stroke. However, when the highest score has been reached, the assessment needs to be complemented with other instruments.

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MEDICIN OCH HÄLSOVETENSKAP  -- Annan medicin och hälsovetenskap -- Övrig annan medicin och hälsovetenskap (hsv//swe)

MEDICAL AND HEALTH SCIENCES  -- Other Medical and Health Sciences -- Other Medical and Health Sciences not elsewhere specified (hsv//eng)

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