Stroke is a major public health problem as the second commonest cause of death and the commonest causeof adult disability. More than one third of stroke survivors have aphasia, which affects a person's ability tounderstand spoken language, talk, read and/or write. This often leads to frustration, depression, andlimitation in performing role as a member of family or community. So far there is no clearly effectiveintervention for aphasia and randomized controlled trials (RCT) to test various hypothesized interventionsare urgently needed.This article outlines some of the methodological issues which warrant attention while designing a RCT totest an intervention for aphasia.
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