Stability of person ability measures in people with acquired brain injury in the use of everyday technology : the test-retest reliability of the Management of Everyday Technology Assessment (META)

摘要

Aim: This study aimed to evaluate the test-retest reliability of the person ability measures to manage everyday technology generated from the observation-based instrument Management of Everyday Technology Assessment (META) in a sample of participants with acquired brain injury (ABI).Method: The META was administered twice within a two-week timeframe in 25 people with ABI. A Rasch measurement model was used to convert the META ordinal raw scores into equal-interval linear measures of each participant’s ability to manage everyday technology (ET). Test-retest reliability of the stability of the person ability measures in the META was examined by a standardized difference Z-test and an intra-class correlations analysis (ICC 1). Result: The result showed that 22 of the 25 participants’ ability measures generated from the META were stable over the test-retest period of time. The ICC 1 of 0.63 indicates a good overall reliability. Conclusion: The META demonstrated acceptable test-retest reliability in the sample of ABI. The results indicate the importance of using sufficiently challenging ETs in relation to a person’s abilities when assessing people with META in order to generate stable measures over time.