A systematic narrative review 1 including 17 studies on nursing interventions with a total of 5307 subjects was abstracted in DARE. Of these 12 were RCTs and 5 were controlled studies. The majority of studies did not report clear beneficial effects for the intervention group. Only 2 of the RCTs had positive outcomes. Studies with positive results showed lower methodological scores.
Comment: The quality of evidence is downgraded by study limitations and inconsistency; heterogeneity in interventions and outcomes.
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