Communication-oriented group therapy for non-progressive dysarthria: A randomised controlled trial in an inpatient setting

Purpose: To examine the effectiveness of communication-oriented group therapy for non-progressive dysarthria regarding functional speech and communicative participation. Method: Prospective two-arm randomised controlled trial, targeting communication-oriented dysarthria group therapy (DGT). A non-specific social group program served as the control condition/group (CG). Participants’ speech was assessed immediately before and after completing the respective three week program, using a standardised diagnostic test (objective outcome measure). Participants rated the extent of their communication participation immediately before and after group therapy, as well as three months after program completion (subjective outcome measure). Result: Fifty-six persons aged 40–88 years with mild to severe dysarthria (median duration 29 days) from an inpatient facility participated. Prior to the intervention, self-rated communication participation correlated with severity of dysarthria. Immediately after the intervention, DGT participants achieved significantly higher scores than the CG on both outcome measures. After three months, the difference between groups in the subjective outcome measure was no longer significant. Conclusion: Participation in DGT resulted in improved speech and better communication participation. Results suggest that three weeks may be too short to ensure maintenance of treatment gains. Also, reduced opportunity for social interaction due to COVID-19 restrictions may have influenced the results.