Sleep Med Psychophysiol.  2017 Dec;24(2):97-105. 10.14401/KASMED.2017.24.2.97.

The Sleep Characteristics of Chronic Schizophrenia Patients with Insomnia in Community-based Mental Health Services

Affiliations
  • 1Department of Psychiatry, Seoul Metropolitan Eunpyeong Hospital, Seoul, Korea. gginadoc@seoul.go.kr

Abstract


OBJECTIVES
To evaluate sleep characteristics and factors associated with sleep disturbance in schizophrenia patients with concurrent active psychotic symptoms and insomnia.
METHODS
Schizophrenia patients with insomnia and active psychotic symptoms (n = 63) were recruited from communitybased mental rehabilitative facilities. Sleep scales such as the Korean version of the Insomnia Severity Index (ISI-K) and the Korean Version of the Pittsburgh Sleep Quality Index (PSQI-K) were evaluated and those with ISI-K >15 were included in the study. Psychotic, anxiety and depressive symptoms were rated with the Brief Psychotic Rating Scale (BPRS), the Korean Version of the Anxiety Sensitivity Index (K-ASI), and the Korean Version of the Beck Depression Inventory-I (K-BDI), respectively. Pearson correlation analyses were performed between the sociodemographic data, ISI-K and PSQI-K. Multiple linear regression analysis was conducted to investigate the factors which affected the ISI-K and PSQI-K.
RESULTS
The mean ISI-K and PSQI-K scores were 18.1 ± 2.6 and 12.0 ± 2.2, respectively. Pearson correlation analysis showed a negative correlation between age of onset and ISI-K score and positive correlations between BRPS and PSQI-K scores and between K-ASI and both ISI-K and PSQI-K scores. Multiple regression analyses for both ISI-K and PSQI-K with K-ASI, age of onset, and BPRS as covariates revealed K-ASI as the only significant remaining factor.
CONCLUSION
Our study suggests that anxiety symptoms are associated with insomnia symptoms in schizophrenia patients regardless of depressive or psychotic symptoms.

Keyword

Anxiety; Community mental health services; Insomnia; Psychotic symptoms; Schizophrenia

MeSH Terms

Age of Onset
Anxiety
Community Mental Health Services
Depression
Humans
Linear Models
Mental Health Services*
Mental Health*
Schizophrenia*
Sleep Initiation and Maintenance Disorders*
Weights and Measures
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