Abstract
This study investigated treatment-induced performance gains in memory function following therapy through the Intensive Cognitive Communication Rehabilitation (ICCR) program for young adults with acquired brain injury (ABI). We aimed to determine the utility of a novel approach to measuring memory performance improvement across semesters of therapy using (a) systematic treatment tasks called Individualized Quantitative Protocols (IQPs) as compared to (b) standardized measures of memory function. Retrospective IQP data spanning five consecutive ICCR semesters were collected from patients (N = 13) with ABI. Raw task-accuracy data were scaled to account for task difficulty gradation. Linear mixed-effects models (LMMs) were used to evaluate the degree of memory improvement-measured by scaled IQP scores-as a function of therapy duration, age, time postinjury, and aphasia; pre- to posttreatment effect sizes were also calculated. For comparison, similar LMMs were run using standardized metrics of memory abilities as the outcome measure. Results showed significant treatment-induced improvements, with gains at the session level (β = 2.76; t = 2.23; p = .047), when improvement was measured using IQP scaled scores. Standardized metrics did not show significant improvement as a function of therapy. Effect size analysis mirrored LMM results, with a large (d = 0.92, 95% confidence interval [0.35, 1.49]) pre- to posttreatment effect when change was measured using IQP scaled scores and a small effect for standardized measures. This preliminary study demonstrates the utility of a granular, individualized metric to index significant impairment-based performance gains following ICCR treatment. These results introduce promise for future analysis of complex treatment data. Additionally, they provide another lens with which to assess treatment progress and its significance. https://doi.org/10.23641/asha.27045937.
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