Examination of Post-Hospital Residential Brain Injury Rehabilitation OutcomesAcross the Age Spectrum
2017
Objectives: To evaluate change in functional independence observed admission to discharge from post-hospital
brain injury residential rehabilitation programs among a large group of chronic TBI adults and children and to
determine the impact of participant age on those outcomes.
Methods: Six hundred and fifty one adults and children with moderate to severe traumatic brain injury (TBI) were
assigned to one of six groups based on age: (1) 5-17, (2) 18-29, (3) 30-39, (4) 40-49, (5) 50-59, and (6) 60 and
older. Functional status was assessed at admission and discharge with the MPAI-4. Differences among groups were
evaluated using conventional parametric tests. Rasch analysis established reliability and construct validity of MPAI-4
data.
Results: Rasch analysis demonstrated satisfactory construct validity and internal consistency (Person
reliability=0.90-0.94, Item reliability=0.99) for the admission and discharge MPAI-4s. Controlling for LOS and onset-to-
admission interval, a RM MANCOVA revealed that each age group showed significant improvement in MPAI-4
Abilities, Adjustment, and Participation indices from admission to discharge (p<0.001). Improvement observed from
admission to discharge was not significantly different across age groups.
Conclusions: Post-hospital residential brain injury rehabilitation was effective in reducing disability for
participants in each age group. Age was not a factor in rehabilitative outcome. The oldest participants on average
realized a reduction in disability equivalent to that observed in the youngest participants independent of length of
stay duration.
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