Guided self-help CBT for distressing voices (the GiVE intervention): predictors of engagement and outcome in routine...

There can be heterogeneity in outcomes for individuals receiving targeted CBT for voices (CBTv), and rates of drop-out require investigation. To promote the directed provision of interventions to those most likely to benefit, it is necessary to elucidate the relationship between the factors driving the variability in engagement and response to these interventions.

This study aimed to explore the possible predictors of engagement and outcome for a transdiagnostic cohort of service users receiving Guided self-help cognitive behaviour intervention for VoicEs (GiVE), a brief, manualised CBTv intervention.

This study utilised a quasi-experimental approach to explore and analyse potential predictors of engagement and outcome for service users offered a course of GiVE within routine clinical practice. The sample consisted of 142 service users who were assessed between January 2017 and September 2019 and were offered the GiVE intervention.

The offer of the intervention was accepted by 108 (76%) service users and completed by 74 (52%). Clinically meaningful benefits on the primary outcomes of voice-related distress and recovery were reported by 54% and 48% of the service users who completed the intervention, respectively. For the prediction of engagement, only higher age was found to be associated with increased engagement, particularly for those aged 45-54 and 55-64. For the prediction of outcome, the only clinical measure found to be associated with poorer outcome was an increased anxiety score at baseline.

Engagement with and outcomes from the GiVE intervention may be enhanced with a pre-intervention consideration of age and the reduction of anxiety, respectively.