Social Function in Patients with Personality Disorder Diagnosed by Single Dimensional Severity Using Korean Version of Social Functioning Questionnaire

Youl-Ri Kim; Soon-Taek Hwang; Sung-Gon Kim; Hong-Seock Lee

doi:10.4306/jknpa.2015.54.4.523

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Kim, Hwang, Kim, and Lee: Social Function in Patients with Personality Disorder Diagnosed by Single Dimensional Severity Using Korean Version of Social Functioning Questionnaire

Original Article

Journal of Korean Neuropsychiatric Association 2015; 54(4): 523-533.

Published online: 30 November 2015

DOI: https://doi.org/10.4306/jknpa.2015.54.4.523

Social Function in Patients with Personality Disorder Diagnosed by Single Dimensional Severity Using Korean Version of Social Functioning Questionnaire

Youl-Ri Kim, MD, PhD^1,^2,³, Soon-Taek Hwang, MD, PhD⁴, Sung-Gon Kim, MD, PhD^5,⁶, Hong-Seock Lee, MD, PhD⁷

¹Department of Psychiatry, Seoul Paik Hospital, Inje University, Seoul, Korea.

²Institute of Eating Disorders and Mental Health, Inje University, Seoul, Korea.

³Institute for Gender Research, Seoul National University, Seoul, Korea.

⁴Department of Psychology, Chungbuk National University, Cheongju, Korea.

⁵Department of Psychiatry, Pusan National University Yangsan Hospital, Yangsan, Korea.

⁶Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Korea.

⁷Department of Psychiatry, Kangnam Sacred Hospital, Hallym University, Seoul, Korea.

Address for correspondence: Youl-Ri Kim, MD, PhD. Department of Psychiatry, Seoul Paik Hospital, Inje University, 9 Mareunnae-ro, Jung-gu, Seoul 04551, Korea. Tel +82-2-2270-0063, Fax +82-2-2270-0344, youlri.kim@paik.ac.kr

Received 11 August 2015 Revised 24 August 2015 Accepted 31 August 2015

Abstract

Objectives

The aims of this study were to examine validity and reliability of the Korean version of the Social Function Questionnaire (SFQ) and evaluated social function with SFQ in patients with personality disorder.

Methods

The SFQ was administered to 186 psychiatric patients (155 patients with personality disorder and 31 patients without personality disorder), and 22 healthy men were recruited to examine the test-retest reliability of SFQ. The severity of personality disorders was determined using the proposed the International Classification of Diseases (ICD)-11th revision (ICD-11) personality disorders. All participants completed the NEO-Five Factor Inventory, Beck Depression Inventory, and Spielberger State and Trait Anxiety Inventory to examine the convergent validity of SFQ.

Results

The Korean version of the SFQ showed good internal consistency (Cronbach's alpha=0.811) and test-retest reliability (r=0.746). Patients with personality disorder had more social dysfunction than those without personality disorder. A graded increase in social dysfunction was observed with increasing severity of personality disorder. Social dysfunction showed a strong linear relationship with the 5 factor model.

Conclusion

The Korean version of the SFQ has good psychometric properties. The results of our study support the severity classification of personality disorder integrated to upcoming ICD-11.

Keywords: Personality disorder, Social function, Social Functioning Questionnaire, ICD-11

Figures and Tables

Fig. 1

The diagnostic flow diagram. PAS : Personality Assessment Schedule, ICD-10 : 10th revision of the International Classification of Diseases, WHO : World Health Organization.

Table 1

The demographic characteristics of the participants (n=186)

SD : Standard deviation

Table 2

The distribution of participants based on ICD-10 mental disorders and personality disorders (n=186)

Though schizotypal disorder is classified as mental disorder in ICD-10, it was included as personality disorder in the table since DSM regards it as a personality disorder. ICD : International Classification of Disease

Table 3

The demographic and clinical characteristics of participating psychiatric patients

Data are shown as mean (standard deviation). PD : Personality disorder, SFQ : Social Functioning Questionnaire, BDI : Beck Depression Inventory, STAI : State and the Trait Anxiety Inventory, NEO-FFI : NEO-Five Factor Inventory

Table 4

The mean scores of SFQ by severity of personality disorders in patients with personality disorder (n=155)

Data are shown as mean (standard deviation). Post-hoc Tukey tests show that the SFQ scores were significantly different between personality difficulty and severe personality disorder. The correlation coefficient between SFQ and the severity of personality disorder is Spearman's rho=0.262 (p<0.001). SFQ : Social Functioning Questionnaire

Table 5

The correlation coefficients of NEO-FFI with SFQ

NEO-FFI : NEO-Five Factor Inventory, SFQ : Social Functioning Questionnaire

Notes

^{Conflicts of Interest} The authors have no financial conflicts of interest.

Appendix

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