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KMID : 1118520100070040257
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Psychiatry Investigation
2010 Volume.7 No. 4 p.257 ~ p.263
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The Reliability and Validity of the Korean Version of the Structured Interview for Prodromal Syndrome
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Jung Myung-Hun
Jang Joon-Hwan
Kang Do-Hyung
Choi Jung-Seok
Shin Na-Young
Kim Hee-Sun
An Suk-Kyoon
Shin Min-Sup
Kwon Jun-Soo
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Abstract
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Objective: The Structured Interview for Prodromal Syndrome (SIPS) from Yale University is intended to diagnose prodromal syndrome of psychosis and to measure the severity of prodromal symptoms. Here, a Korean version of SIPS is presented, and its reliability, validity, and factor structures are examined using a representative Korean sample.
Methods: The Korean version of SIPS was administered to 40 participants over a period of 1 year. The inter-rater reliability and internal consistency of the SIPS were then evaluated. In addition, its factor structure was investigated using principal-axis factor analysis. Concurrent validity was explored using Pearson correlation coefficients with the Positive and Negative Syndrome Scale (PANSS).
Results: Of the 40 subjects, 12.5% developed psychotic disorders during the 1-year follow-up period. Inter-rater reliability was good (intra-class correlations=0.96), and internal consistency was acceptable (Cronbach’s alpha=0.83). A three-factor resolution displayed the best simple structure and accounted for 52.6% of all item variance. Factors 1 and 2 showed strong correlations with negative symptoms and cognitive dysfunction, respectively, on the PANSS. Factor 3 was not correlated with any factor on the PANSS.
Conclusion: The Korean version of SIPS is a reliable instrument for the assessment of prodromal symptoms in subjects and may be used to evaluate prodromal psychosis.
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KEYWORD
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The Korean version of the Structured Interview for Prodromal Syndrome, Reliability, Validity, Schizophrenia
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