Mindfulness Mediates the Effect of a Psychological Online Intervention for Psychosis on Self-Reported Hallucinations: A Secondary Analysis of Voice Hearers From the EviBaS Trial

Lüdtke, Thies; Platow-Kohlschein, Heike; Rüegg, Nina; Berger, Thomas; Moritz, Steffen; Westermann, Stefan (2020). Mindfulness Mediates the Effect of a Psychological Online Intervention for Psychosis on Self-Reported Hallucinations: A Secondary Analysis of Voice Hearers From the EviBaS Trial. Frontiers in psychiatry, 11, p. 228. Frontiers 10.3389/fpsyt.2020.00228

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Background Psychological online interventions (POIs) could represent a promising approach to narrow the treatment gap in psychosis but it remains unclear whether improving mindfulness functions as a mechanism of change in POIs. For the present study, we examined if mindfulness mediates the effect of a comprehensive POI on distressing (auditory) hallucinations. Methods We conducted a secondary analysis on voice hearers (n = 55) from a randomized controlled trial evaluating a POI for psychosis (EviBaS; trial registration NCT02974400, clinicaltrials.gov). The POI includes a module on mindfulness and we only considered POI participants in our analyses who completed the mindfulness module (n = 16). Results Participants who completed the mindfulness module reported higher mindfulness (p = 0.015) and lower hallucinations (p = 0.001) at post assessment, compared to controls, but there was no effect on distress by voices (p = 0.598). Mindfulness mediated the POI’s effect on hallucinations (b = −1.618, LLCI = −3.747, ULCI = −0.054) but not on distress by voices (b = −0.057, LLCI = −0.640, ULCI = 0.915). Limitations and Discussion Completion of the mindfulness module was not randomized. Hence, we cannot draw causal inferences. Even if we assumed causality, it remains unclear which contents of the POI could have resulted in increased mindfulness and reduced hallucinations, as participants completed other modules as well. In addition, confounding variables could explain the mediation and the sample size was small. Nonetheless, the overall pattern of results indicates that the POI is likely to improve mindfulness, and that increased mindfulness could partially explain the POI’s efficacy. Keywords: mindfulness-based intervention, auditory verbal hallucinations, mediation analysis, schizophrenia, internet intervention

Item Type:

Journal Article (Original Article)

Division/Institute:

07 Faculty of Human Sciences > Institute of Psychology > Clinical Psychology and Psychotherapy

UniBE Contributor:

Rüegg, Nina Lee and Berger, Thomas

Subjects:

600 Technology > 610 Medicine & health
100 Philosophy > 150 Psychology
900 History > 910 Geography & travel

ISSN:

1664-0640

Publisher:

Frontiers

Language:

English

Submitter:

Melanie Best

Date Deposited:

19 May 2020 11:32

Last Modified:

24 May 2020 02:42

Publisher DOI:

10.3389/fpsyt.2020.00228

PubMed ID:

32308631

BORIS DOI:

10.7892/boris.143855

URI:

https://boris.unibe.ch/id/eprint/143855

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