Assessing the efficacy and feasibility of providing metacognitive training for patients with schizophrenia by mental health nurses: A randomized controlled trial

Lara Manuela Guedes de Pinho, Carlos Alberto da Cruz Sequeira, Francisco Miguel Correia Sampaio, Nuno Barbosa Rocha, Zeynep Ozaslan, Carmen Ferre-Grau, Lara Manuela Guedes de Pinho, Carlos Alberto da Cruz Sequeira, Francisco Miguel Correia Sampaio, Nuno Barbosa Rocha, Zeynep Ozaslan, Carmen Ferre-Grau

Abstract

Aim: To evaluate the efficacy of metacognitive group training in reducing psychotic symptoms and improving cognitive insight and functions in people with schizophrenia.

Design: Randomized controlled trial. It was carried out between July 2019 -February 2020.

Methods: Fifty-six patients with schizophrenia were enrolled and randomly assigned to either a control group (N = 29) or a metacognitive training group (N = 27). Blinded assessments were made at baseline, 1-week post-treatment and at follow-up 3 months after treatment. The primary outcome measure was psychotic symptoms based on the Psychotic Symptom Rating Scales (PSYRATS). Secondary outcomes were assessed by the Beck Cognitive Insight Scale (BCIS), the Personal and Social Performance (PSP) scale and the World Health Organization Disability Assessment Schedule (WHODAS).

Results: Completion at follow-up was high (92.86%). The intention-to-treat analyses demonstrated that patients in the metacognitive training group had significantly greater improvements of the Psychotic Symptom Rating Scales delusion score and total score and the Personal and Social Performance Scale, after 3 months, compared with the control group. The effect size was medium to large. The intention-to-treat analyses also demonstrated that patients in the metacognitive training group had significantly greater reductions of the Psychotic Symptom Rating Scales hallucination score and Beck Cognitive Insight Scale self-certainty score post-treatment, compared with the control group. The effect size was medium to large.

Conclusion: The metacognitive training administered by psychiatric and mental health nurses was effective in ameliorating delusions and social functioning over time and it immediately reduced hallucinations post-treatment.

Impact: Metacognitive training for treating psychosis in patients with schizophrenia is efficacious and administration is clinically feasible in the Portuguese context.

Trial registration number: ClinicalTrials.gov ID NCT03891186.

Keywords: Beck Cognitive Insight Scale (BCIS); Personal and Social Performance (PSP) scale; Psychotic Symptom Rating Scales (PSYRATS); cognitive insight; mental health nursing; metacognitive training; psychiatric nursing; psychotic symptoms; randomized controlled trial; schizophrenia; social functioning.

© 2020 John Wiley & Sons Ltd.

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