A Cochrane review [Abstract] 1 included 9 studies. Two studies (n=14) showed a significant effect of intrathecal baclofen in reducing spasticity. One study comparing tizanidine to placebo showed a significant effect in improving Ashworth Score but not in ADL performances.
Comment: The quality of evidence is downgraded by inconsistency (heterogeneity in outcomes), by indirectness (differences in studied interventions), and by imprecise results (limited study size for each comparison).
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