Document Detail

Validity and reliability study of the Thai version of WHO schedules for clinical assessment in neuropsychiatry: sections on psychotic disorders.
MedLine Citation:
PMID:  18575297     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To determine the validity and reliability of the Thai version of the WHO Psychotic Disorders Sections of the Schedules for Clinical Assessment in Neuropsychiatry (SCAN) Version 2.1 MATERIAL AND METHOD: The SCAN interview version 2.1 Psychotic Symptoms Sections (Section 16: Perceptual disorders other than hallucinations, Section 17: Hallucinations, Section 18: Experiences of thought disorder and replacement of will, and Section 19: Delusions) were translated into Thai. The content validity of the translation was established by comparing a back-translation of the Thai version to the English original. Whenever inconsistencies were encountered, the Thai version was adapted to convey the meaning of the original. The revised Thai version was then field-tested in 4 regions (Suanprung Psychiatric Hospital, Jitavejkhonkaen Hospital, Srithanya Hospital and Suansaranrom Psychiatric Hospital, each place comprised 20 volunteers ) for comprehensibility of the relatively technical language. Between October 2004 and July 2006, thirty persons were recruited for the reliability study (16 males; 14 females). Sixteen persons were schizophrenic patients (9 males; 7 females) and 14 (7 males; 7 females) were normal persons or nonpsychotic psychiatric patients. Education and occupations varied widely. The subjects were interviewed by a psychiatrist competent in using the Thai version of SCAN and these interviews were recorded on video for later re-rating. RESULTS: Based on the response from Thai subjects and consultations with competent psychiatrists, content validity was established The time taken to interview a schizophrenic patient averaged 140.2 +/- 36.0 minutes (range, 75-193) vs. 81.9 +/- 25.9 minutes (range, 48-124) for a comparison subject. The respective mean +/- SD of inter-rater reliability (kappa) of Section 16, 17, 18 and 19 was 0.66 +/- 0.17, 0.71 +/- 0.16, 0. 70 +/- 0.22 and 0.64 +/- 0.23. Some items in some sections had 100 percent agreement between raters. The respective intra-rater reliability was 0.65 +/- 0. 11, 0. 74 +/- 0.17, 0.86 +/- 0.17 and 0.80 +/- 0.18. Some sections had items with 100 percent agreement from the same rater even when rated 2 weeks apart. More than half of the items in each section had kappa values, both inter-rater and intra-rater, at least in substantial level. CONCLUSION: The Thai version of the Psychotic Disorders Sections of SCAN version 2.1 proved to be a valid and reliable tool for assessing psychotic symptoms among Thais.
Suchat Paholpak; Suwanna Arunpongpaisal; Thawatchai Krisanaprakornkit; Jiraporn Khiewyoo
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Validation Studies    
Journal Detail:
Title:  Journal of the Medical Association of Thailand = Chotmaihet thangphaet     Volume:  91     ISSN:  0125-2208     ISO Abbreviation:  J Med Assoc Thai     Publication Date:  2008 Mar 
Date Detail:
Created Date:  2008-06-25     Completed Date:  2008-08-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7507216     Medline TA:  J Med Assoc Thai     Country:  Thailand    
Other Details:
Languages:  eng     Pagination:  408-16     Citation Subset:  IM    
Department of Psychiatry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.
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MeSH Terms
Cross-Sectional Studies
Interview, Psychological
Middle Aged
Psychiatric Status Rating Scales
Psychological Tests
Psychotic Disorders / diagnosis*
Reproducibility of Results
World Health Organization

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