Journal List > J Korean Acad Psychiatr Ment Health Nurs > v.23(3) > 1058006

Yoo: Developing a Prediction Model for Quality of Life in Patients with Schizophrenia



In this study an exploration was done of the quality of lives of patients with schizophrenia in South Korea and factors related to quality of life, and to develop a model that predicts the quality of their lives.


The participants were 225 patients with schizophrenia, aged 18 and above, residing in Seoul and Gyeonggi-Province. Collected data was analyzed using SAS 9.3 and AMOS 18.0.


Social support and psychological well-being were the two factors that most affected the quality of life in patients with schizophrenia. Symptoms, empowerment, and internalized stigma were not found to influence the quality of the patients' lives. However, symptoms, social support, empowerment, internalized stigma affected the patients' psychological well-being, and psychological well-being was identified as an influential variable for quality of life in patients with schizophrenia. Therefore, symptoms, social support, empowerment, and internalized stigma are influential to the patients' quality of lives through psychological well-being.


These results suggest that the quality of life in patients with schizophrenia should be examined through the variable of psychological well-being as many variables related to the patients' quality of life affect psychological well-being.

Figures and Tables

Figure 1
Hypothetical model.
Figure 2
Path diagram for the modified model.
Table 1
Descriptive Statistics of the Observed Variables (N=225)
Table 2
Model Fitness of Hypothetical Model and Model Fitness Change of Modified Models

*e4 (Impulsive and addictive behavior)-e5 (Psychosis) covariance setting; er13 (Economic domain)-er16 (Occupational/social domain) covariance setting; er17 (Affective domain) elimination.

CMIN/DF=Normed χ2; RMR (RMSR)=Root mean-square residual; TLI=Turker-lewis index; CFI=Comparative fit index; SRMR=Standardized root mean residual; CN=Critical N; RMSEA=Root mean square error of approximation; AIC=Akaike information criterion; BIC=Bayes information criterion.

Table 3
Estimates and Effects for the Final Model

SMC=Squared multiple correlations.


This article is a condensed form of the first author's doctoral thesis from Ewha Womans University.


1. Min SK. Schizophrenia. Modern psychiatry. 5th ed. Seoul: Ilchokak;2006. p. 242–273.
2. Resnick SG, Fontana A, Lehman AF, Rosenheck RA. An empirical conceptualization of the recovery orientation. Schizophr Res. 2005; 75(1):119–128.
3. Ha JS, Yoon SJ, Byun EK. A study on the mental health professional agents' attitudes toward the mentally disabled persons' recovery. J Disabil Welf. 2010; 12:15–33.
4. Bobes J, Garcia-Portilla MP. Quality of life in schizophrenia. In : Katschnig H, Freeman H, Satorius N, editors. Quality of life in mental disorders. 2nd ed. Chichester New York: John Wkley & Sons;2006. p. 153–167.
5. Saarni SI, Viertiö S, Perälä J, Koskinen S, Lönnqvist J, Suvisaari J. Quality of life of people with schizophrenia, bipolar disorder and other psychotic disorders. Br J Psychiatry. 2010; 197(5):386–394.
6. Orley J, Saxena S, Herrman H. Quality of life and mental illness: reflections from the perspective of the WHOQOL. Br J Psychiatry. 1998; 172:291–293.
7. Lehman AF. The well-being of chronic mental patients assessing their quality of life. Arch Gen Psychiatry. 1983; 40(4):369–373.
8. Hwang SS, Lee JY, Cho SJ, Lee DW, Kim YS, Jung HY. The model of the relationships among the predictors of quality of life in chronic stage of schizophrenia. Prog Neuropsychopharmacol Biol Psychiatry. 2009; 33(7):1113–1118.
9. Kim MS, Kim HW, Cha KH. Analyses on the construct of psychological well-being (PWB) of Korean male and female adults. Korean J Soc Psychol. 2001; 15(2):19–39.
10. Kook SH. The development of the model of quality of life in patients with schizophrenic disorder [dissertation]. [Jeonju]: Chonbuk National University;2001. 141.
11. Kim MY. A structural model of recovery among people with mental illness [dissertation]. [Seoul]: Ewha Womans University;2011. 165.
12. Chiu MY, Ho WW, Lo WT, Yiu MG. Operationalization of the SAMHSA model of recovery: a quality of life perspective. Qual Life Res. 2010; 19(1):1–13.
13. Vauth R, Kleim B, Wirtz M, Corrigan PW. Self-efficacy and empowerment as outcomes of self-stigmatizing and coping in schizophrenia. Psychiatry Res. 2007; 150(1):71–80.
14. El-Badri S, Mellsop G. Stigma and quality of life as experienced by people with mental illness. Australas Psychiatry. 2007; 15:195–200.
15. Muñoz M, Sanz M, Pérez-Santos E, Quiroga Mde L. Proposal of a socio-cognitive-behavioral structural equation model of internalized stigma in people with severe and persistent mental illness. Psychiatry Res. 2011; 186(2-3):402–408.
16. Sibitz I, Amering M, Unger A, Seyringer ME, Bachmann A, Schrank B, et al. The impact of the social network, stigma and empowerment on the quality of life in patients with schizophrenia. Eur Psychiatry. 2011; 26(1):28–33.
17. Hansson L, Eklund M, Bengtsson-Tops A. The relationship of personality dimensions as measured by the temperament and character inventory and quality of life in individuals with schizophrenia or schizoaffective disorder living in the community. Qual Life Res. 2001; 10:133–139.
18. Koo JS, Kim UC. Integrated relationship among psychological trait, life experience, and subjective well-being. Korean J Soc Psychol. 2006; 20(4):1–18.
19. Hwang TY, Park AS, Kim MS, Song JW, Yeo UT. A study on the validity and reliability of the korean version of behavior and symptom identification scale (BASIS-32). Bull Yong-In Psychiatr Inst. 2000; 7(1):49–60.
20. Zimet GD, Dahlem NW, Zimet SG, Farley GK. The multidimensional scale of perceived social support. J Pers Assess. 1988; 52(1):30–41.
21. Choi HS. A study on the predictors of vocational rehabilitation outcome for persons with schizophrenia [dissertation]. [Seoul]: Seoul Woman's University;1999. 155.
22. Choi S, Hwang TY, Lee WK. Development of korean version of empowerment scale for psychiatric rehabilitation. J Korean Assoc Soc Psychiatry. 2005; 10(1):38–47.
23. Hwang TY, Lee WK, Han ES, Kwon EJ. A study on the reliability and validity of the Korean version of internalized stigma of mental illness scale (K-ISMI). J Korean Neuropsychiatr Assoc. 2006; 45(5):418–426.
24. Ryff CD. Happiness is everything, or is it? Explorations on the meaning of psychological well-being. J Pers Soc Psychol. 1989; 57(6):1069–1081.
25. Bae BR. Structural equation modeling with Amos 19. Seoul: Crbooks;2011.
26. Galuppi A, Turola MC, Nanni MG, Mazzoni P, Grassi L. Schizophrenia and quality of life: how important are symptoms and functioning? Int J Ment Health Syst. 2010; 4:31–38.
27. Ritsner M, Mondai I, Endicott J, Rivkin O, Nechamkin Y, Barak P, et al. Differences in quality of life domains and psychopathologic and psychosocial factors in psychiatric patients. J Clin Psychiatry. 2000; 61(11):880–889.
28. Brohan E, Elgie R, Sartorius N, Thornicroft G. Self-stigma, empowerment and perceived discrimination among people with schizophrenia in 14 European countries: the GAMIAN-Europe study. Schizophr Res. 2010; 122:232–238.
29. Suh EKM, Koo JS. A Concise measure of subjective well-being (COMOSWB): scale development and validation. Korean J Soc Psychol. 2011; 25(1):96–114.
30. Margetic BA, Jakovljevic M, Ivanec D, Margetic B. Temperament, character, and quality of life in patients with schizophrenia and their first-degree relatives. Compr Psychiatry. 2011; 52(4):425–430.
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