Journal List > J Korean Neuropsychiatr Assoc > v.56(4) > 1017848

Kim, Choi, Kang, Lee, and Park: Antidepressants Use in Schizophrenia: Clinical Correlates and Prescription Profiles

Abstract

Objectives

To identify recent prescription patterns, as well as the demographic and clinical correlates of antidepressants (ADs) usage in schizophrenic patients.

Methods

A total of 297 patients diagnosed with schizophrenia enrolled at Seoul National Hospital in 2013. Brief Psychiatric Rating Scale (BPRS) was used to evaluate current psychiatric symptoms. Bivariate comparisons were used to assess the usage of concomitant psychotropics, demographic and clinical characteristics of ADs users compared with non-users. Multivariate analysis of covariance was performed consecutively.

Results

The rate of ADs usage was 26.3% and the most commonly used ADs were selective serotonin reuptake inhibitors. ADs users more often took benzodiazepine than ADs non-users (p=0.005), whereas there were no significant demographic and other clinical difference between the two groups. Regarding BPRS, somatic concern (p=0.022), anxiety (p=0.001) and depressive mood (p=0.009) scores were higher, and excitement (p=0.006) and hostility (p=0.04) scores were lower among ADs users compared to non-users, although there was no significant difference in the other scores of BPRS between the two groups. Moreover, among 5 components of BPRS, scores of affective symptoms (p < 0.001) were significantly higher, and scores of activation symptoms (p=0.014) were significantly lower in ADs users compared to non-users.

Conclusion

This study suggests that the usage of ADs could be related to affective symptoms regardless of positive and negative symptoms of schizophrenia. Further studies are required in order to confirm the clinical correlates of ADs usage and the interactions between affective symptoms and psychotic symptoms.

Figures and Tables

Table 1

Demographics and illness characteristics of a total of 297 schizophrenia patients with versus without current antidepressant use

jkna-56-160-i001

* : p<0.01, ** : p<0.0001 vs. antidepressant nonuser. AD : Antidepressant, SD : Standard deviation, CGI-S : Clinical Global Impression-Severity, AIMS : Abnormal Involuntary Movement Scale, SAS : Simpson-Angus Scale

Table 2

Comparisons of BPRS scores between AD users and nonusers in schizophrenia

jkna-56-160-i002

Positive symptom score including conceptual disorganization, grandiosity, hallucinatory behavior and unusual thought content ; Negative symptom score including emotional withdrawal, motor retardation and blunted affect ; Affective symptoms score including somatic concern, anxiety, guilty feeling and depressive mood ; Resistance symptom score including hostility, suspiciousness and uncooperativeness ; Activation symptom score including tension, mannerisms and posturing and excitement. Mean±SD of BPRS scores were compared using multivariate analysis of covariance. * : p<0.05, ** : p<0.01, *** : p<0.001 vs. antidepressant nonuser. BPRS : Brief Psychiatric Rating Scale, AD : Antidepressant, SD : Standard deviation

Table 3

Usage frequency and mean dosages of specific antidepressants taken by patients with schizophrenia

jkna-56-160-i003

AD : Antidepressant, SD : Standard deviation, TCA : Tricyclic antidepressant

Notes

Conflicts of Interest The authors have no financial conflicts of interest.

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