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Conference Paper: A validation for the Subjective Cognitive Impairment Scale (SCIS) in patients with first-episode Schizophrenia Spectrum Disorder

TitleA validation for the Subjective Cognitive Impairment Scale (SCIS) in patients with first-episode Schizophrenia Spectrum Disorder
Authors
Issue Date2014
PublisherHong Kong Academy of Medicine Press. The Journal's web site is located at http://easap.asia/index.htm
Citation
The 2014 Regional Congress of the World Psychiatric Association (WPA), Hong Kong, 12-14 December 2014. In East Asian Archives of Psychiatry, 2014, v. 24 n. 4 suppl., p. 57, abstract OP1.2.4 How to Cite?
AbstractOBJECTIVES:. Cognitive deficit is a core feature of schizophrenia. Recently, subjective cognitive impairment has received increasing attention. Such impairment reflects the self-perceived cognitive difficulties of patients in their daily activities and was found to predate onset and relapse of schizophrenia. However, this construct is under-studied. This study aimed to validate the Subjective Cognitive Impairment Scale (SCIS), which was designed specifically for schizophrenia patients. The scale was developed using a bottom-up approach; 30 first-episode schizophrenic patients were asked to describe their daily cognitive difficulties. Items underwent systematic review and refinement. METHODS: The 31-item scale was administered to 101 patients with first-episode schizophrenia spectrum disorder. Construct validity of SCIS were examined by principal component factor analysis, while the reliability of SCIS was evaluated using its internal consistency. The relationships of SCIS with sociodemographics and clinical characteristics were investigated using Spearman rank correlation. RESULTS: Factor analysis revealed 9 factors with an eigenvalue larger than 1. Based on further analysis, only factor 1 was retained. Factor 1 accounted for 32.26% of the variance. Cronbach’s alpha coefficient for the 30-item scale was 0.92 after removing item 1. There were significant correlations between each item and the total score (p < 0.01). Greater SCIS score was associated with higher score on Positive and Negative Syndrome Scale (PANSS) cognitive factor (Spearman rho = 0.29, p < 0.01) and depression and anxiety factor (Spearman rho = 0.41, p < 0.001), and prolonged duration of untreated psychosis (Spearman rho = 0.24, p < 0.05). CONCLUSIONS: The current study provided preliminary support for the reliability and validity of SCIS. Future studies could employ SCIS in examining the relationship between subjective and objective cognitive impairments.
DescriptionCongress Theme: Yin and Yang of Mental Health in Asia - Balancing Polarities
Oral Presentation 1.2 – Severe Mental Illness (I): no. OP1.2.4
Persistent Identifierhttp://hdl.handle.net/10722/214249
ISSN
2015 SCImago Journal Rankings: 0.331

 

DC FieldValueLanguage
dc.contributor.authorChiu, S-
dc.contributor.authorChan, CW-
dc.contributor.authorChang, WC-
dc.contributor.authorHui, LM-
dc.contributor.authorChan, KW-
dc.contributor.authorLee, EHM-
dc.contributor.authorChen, EYH-
dc.date.accessioned2015-08-21T11:02:18Z-
dc.date.available2015-08-21T11:02:18Z-
dc.date.issued2014-
dc.identifier.citationThe 2014 Regional Congress of the World Psychiatric Association (WPA), Hong Kong, 12-14 December 2014. In East Asian Archives of Psychiatry, 2014, v. 24 n. 4 suppl., p. 57, abstract OP1.2.4-
dc.identifier.issn2078-9947-
dc.identifier.urihttp://hdl.handle.net/10722/214249-
dc.descriptionCongress Theme: Yin and Yang of Mental Health in Asia - Balancing Polarities-
dc.descriptionOral Presentation 1.2 – Severe Mental Illness (I): no. OP1.2.4-
dc.description.abstractOBJECTIVES:. Cognitive deficit is a core feature of schizophrenia. Recently, subjective cognitive impairment has received increasing attention. Such impairment reflects the self-perceived cognitive difficulties of patients in their daily activities and was found to predate onset and relapse of schizophrenia. However, this construct is under-studied. This study aimed to validate the Subjective Cognitive Impairment Scale (SCIS), which was designed specifically for schizophrenia patients. The scale was developed using a bottom-up approach; 30 first-episode schizophrenic patients were asked to describe their daily cognitive difficulties. Items underwent systematic review and refinement. METHODS: The 31-item scale was administered to 101 patients with first-episode schizophrenia spectrum disorder. Construct validity of SCIS were examined by principal component factor analysis, while the reliability of SCIS was evaluated using its internal consistency. The relationships of SCIS with sociodemographics and clinical characteristics were investigated using Spearman rank correlation. RESULTS: Factor analysis revealed 9 factors with an eigenvalue larger than 1. Based on further analysis, only factor 1 was retained. Factor 1 accounted for 32.26% of the variance. Cronbach’s alpha coefficient for the 30-item scale was 0.92 after removing item 1. There were significant correlations between each item and the total score (p < 0.01). Greater SCIS score was associated with higher score on Positive and Negative Syndrome Scale (PANSS) cognitive factor (Spearman rho = 0.29, p < 0.01) and depression and anxiety factor (Spearman rho = 0.41, p < 0.001), and prolonged duration of untreated psychosis (Spearman rho = 0.24, p < 0.05). CONCLUSIONS: The current study provided preliminary support for the reliability and validity of SCIS. Future studies could employ SCIS in examining the relationship between subjective and objective cognitive impairments.-
dc.languageeng-
dc.publisherHong Kong Academy of Medicine Press. The Journal's web site is located at http://easap.asia/index.htm-
dc.relation.ispartofEast Asian Archives of Psychiatry-
dc.relation.ispartof東亞精神科學志-
dc.rightsEast Asian Archives of Psychiatry. Copyright © Hong Kong Academy of Medicine Press.-
dc.titleA validation for the Subjective Cognitive Impairment Scale (SCIS) in patients with first-episode Schizophrenia Spectrum Disorder-
dc.typeConference_Paper-
dc.identifier.emailChang, WC: changwc@hku.hk-
dc.identifier.emailHui, LM: christyh@hkucc.hku.hk-
dc.identifier.emailChan, KW: kwsherry@hku.hk-
dc.identifier.emailLee, EHM: edwinlhm@hku.hk-
dc.identifier.emailChen, EYH: eyhchen@hku.hk-
dc.identifier.authorityChang, WC=rp01465-
dc.identifier.authorityHui, LM=rp01993-
dc.identifier.authorityChan, KW=rp00539-
dc.identifier.authorityLee, EHM=rp01575-
dc.identifier.authorityChen, EYH=rp00392-
dc.description.naturelink_to_OA_fulltext-
dc.identifier.hkuros249114-
dc.identifier.volume24-
dc.identifier.issue4 suppl.-
dc.identifier.spage57, abstract OP1.2.4-
dc.identifier.epage57, abstract OP1.2.4-
dc.publisher.placeHong Kong-

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