Cognitive rehabilitation for cancer-related cognitive dysfunction: a systematic review
Individuals with non-central nervous system (CNS) cancers can experience cancer-related cognitive dysfunction (CRCD), negatively impacting daily functioning and quality of life. This systematic review examined cognitive rehabilitation programs aimed at improving cognitive function.
PsychInfo and PubMed were searched in February 2019. Eligible studies evaluated a cognitive rehabilitation program for adults with non-CNS cancers and included at least one objective cognitive measure. Across studies, we assessed methodological quality using relevant criteria based on published intervention-related review guidelines and examined findings from performance-based and self-reported outcome measures.
19 studies met inclusion criteria, totalling 1124 participants altogether. These studies included randomized controlled trials (n = 12), partial, quasi or non-randomized controlled trials (n = 3) and single-arm pilot studies (n = 4). All studies found improvements on at least one cognitive measure (performance-based or self-reported). By cognitive domain, objective improvements in memory were most commonly reported, followed by executive functions and processing speed. In terms of methodological quality, studies generally provided clear descriptions of participants and interventions. However, limitations included lack of standardized terminology for interventions, discrepancies in outcome measures, and incomplete statistical reporting.
The available evidence supports clinical implementation of cognitive rehabilitation to improve CRCD, with further work in program development, dissemination, and feasibility recommended. We provide specific recommendations to facilitate future research and integration in this field.
KeywordsNeuropsychological intervention Cognitive training Chemobrain
This work was supported in part by the Princess Margaret Cancer Foundation and the Ontario Ministry of Health and Long Term Care.
Compliance with ethical standards
The views expressed do not necessarily reflect those of the OMOHLTC.
Conflict of interest
The authors declare that they have no conflict of interest.
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