The review indicates low level evidence for the positive effects of neuropsychological rehabilitation in MS. Interventions included in the review were heterogeneous. Consequently, clinical inferences can basically be drawn from single studies. Therefore, new trials may change the strength and direction of the evidence. To further strengthen the evidence, well-designed high quality studies are needed. In this systematic review, recommendations are given for improving the quality of future studies on the effects of neuropsychological rehabilitation in MS.
Efficacy of an executive function intervention programme in MS: a placebo-controlled and pseudo-randomized trial.
We evaluated a rehabilitation programme for executive deficits in multiple sclerosis patients by comparing outcome scores of a cognitive intervention group (CIG; n = 11) with those of a placebo group (n = 14) and an untreated group (n = 15). Executive functioning and verbal learning improved significantly more in the CIG. The treatment effect on verbal learning was still present at 1-year follow-up. Baseline brain atrophy, quantified by the brain parenchymal fraction, was associated with treatment effects for one aspect of executive functioning. Consequently, cognitive intervention may be beneficial and baseline brain atrophy has some predictive value in determining treatment outcome for executive functioning.