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. 2023 Sep 23;12(19):6147.
doi: 10.3390/jcm12196147.

A Pilot Nurse-Administered CBT Intervention for Insomnia in Patients with Schizophrenic Disorder: A Randomized Clinical Effectiveness Trial

David Batalla-Martin  1 , Maria-Antonia Martorell-Poveda  2 , Angel Belzunegui-Eraso  3 , Alejandro Marieges Gordo  1 , Helena Batlle Lleal  1 , Raquel Pasqual Melendez  1 , Raquel Querol Girona  1 , Marina López-Ruiz  4
Affiliations

A Pilot Nurse-Administered CBT Intervention for Insomnia in Patients with Schizophrenic Disorder: A Randomized Clinical Effectiveness Trial

David Batalla-Martin et al. J Clin Med. .

Abstract

Insomnia is a highly prevalent disorder among the population with schizophrenia and has a significant impact on their quality of life. Cognitive behavioural therapies (CBT) have shown effectiveness in the treatment of insomnia in the general population. The aim of this this pilot study was to evaluate the effectiveness of a group intervention led by nurses in an outpatient mental health centre. The group work combined cognitive behavioural and psychoeducational therapeutic interventions to improve insomnia in patients with schizophrenic disorder and their health-related quality of life. This randomized clinical trial included intervention and control groups with follow-up assessments at 6 and 9 months, using the Insomnia Severity Index (ISI), Pittsburgh Sleep Quality Index (PSQI), and EuroQol-5D (EQ-5D) scales. The inclusion criteria were as follows: over 18 years of age, diagnosis of schizophrenia, and a score of >7 on the ISI scale. The total sample was 40 participants. The ISI scale showed a mean difference of 3.63 (CI 95%: 2.02-5.23) (p = 0.000) and 4.10 (CI 95%: 2.45-5.75) (p = 0.000) and a large effect size (F: 28.36; p = 0.000; ηp2: 0.427). Regarding the PSQI scale, the mean difference was 3.00 (CI 95%: 1.53-4.49) (p = 0.000) and 2.30 (CI 95%: 0.85-3.75) (p = 0.000), with a medium effect size (F: 18.31; p = 0.000 ηp2: 0.325). The EQ-VAS scale showed a difference in mean scores between the groups of 10.48 (CI 95%: -19.66--1.29) (p = 0.027). CBT adapted for populations with mental disorders, carried out by nurses, is effective in improving insomnia and health-related quality of life.

Keywords: cognitive behavioural therapy for insomnia; insomnia; quality of life; schizophrenia; sleep disturbance.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
CONSORT flowchart of the study design.
Figure 2
Figure 2
Estimated marginal means ISI scale.
Figure 3
Figure 3
Estimated marginal means of the PSQI scale.
Figure 4
Figure 4
Estimated marginal means EQ-VAS scale.
See this image and copyright information in PMC

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