Format

Send to

Choose Destination
Psychiatry Investig. 2010 Dec;7(4):257-63. doi: 10.4306/pi.2010.7.4.257. Epub 2010 Dec 16.

The reliability and validity of the korean version of the structured interview for prodromal syndrome.

Author information

1
Department of Psychiatry, Seoul National University College of Medicine, Seoul, Korea.

Abstract

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.

KEYWORDS:

Reliability; Schizophrenia; The Korean version of the Structured Interview for Prodromal Syndrome; Validity

Supplemental Content

Full text links

Icon for Publishing M2Community Icon for PubMed Central
Loading ...
Support Center