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Article: Measuring and Validating a General Cancer Predisposition Perception Scale: An Adaptation of the Revised-IPQ-Genetic Predisposition Scale

TitleMeasuring and Validating a General Cancer Predisposition Perception Scale: An Adaptation of the Revised-IPQ-Genetic Predisposition Scale
Authors
Issue Date2015
Citation
PLoS ONE, 2015, v. 10 n. 11, p. e0142620 How to Cite?
AbstractBackground Illness perceptions are linked to individual help-seeking and preventive behaviors. Previous illness perception studies have identified five dimensions of illness-related experience and behaviour. The Revised Illness Perception Questionnaire (IPQ-R) for genetic predisposition (IPQ-R-GP) was developed to measure illness perceptions in those genetically-predisposed to blood disease. We adapted the IPQ-R-GP to measure perceptions of generalized cancer predisposition. This paper describes the development and validation of the Cancer Predisposition Perception Scale (CPPS). Methods The draft CPPS scale was first administered to 167 well Hepatitis B carriers and 123 other healthy individuals and the factor structure was examined using Exploratory Factor Analysis. Then the factor structure was confirmed in a second sample comprising 148 healthy controls, 150 smokers and 152 passive smokers using Confirmatory Factor Analysis (CFA). Results Six-factors comprising 26 items provided optimal fit by eigen and scree-plot methods, accounting for 58.9% of the total variance. CFA indicated good fit of the six-factor model after further excluding three items. The six factors, Emotional representation (5 items), Illness coherence (4 items), Treatment control (3 items), Consequences (5 items), Internal locus of control (2 items) and External locus of control (4 items) demonstrated adequate-togood subscale internal consistency (Cronbach's a = 0.63-0.90). Divergent validity was suggested by low correlations with optimism, self-efficacy, and scales for measuring physical and psychological health symptoms. Conclusion The CPPS appears to be a valid measure of perceived predisposition to generic cancer risks and can be used to examine cancer-risk-related cognitions in individuals at higher and lower cancer risk.
Persistent Identifierhttp://hdl.handle.net/10722/221640
ISSN
2015 Impact Factor: 3.057
2015 SCImago Journal Rankings: 1.395
ISI Accession Number ID
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DC FieldValueLanguage
dc.contributor.authorLam, WWT-
dc.contributor.authorLiao, Q-
dc.contributor.authorWong, JHF-
dc.contributor.authorLai, CL-
dc.contributor.authorYuen, RMF-
dc.contributor.authorTsang, JWH-
dc.contributor.authorFielding, R-
dc.date.accessioned2015-11-30T03:50:22Z-
dc.date.available2015-11-30T03:50:22Z-
dc.date.issued2015-
dc.identifier.citationPLoS ONE, 2015, v. 10 n. 11, p. e0142620-
dc.identifier.issn1932-6203-
dc.identifier.urihttp://hdl.handle.net/10722/221640-
dc.description.abstractBackground Illness perceptions are linked to individual help-seeking and preventive behaviors. Previous illness perception studies have identified five dimensions of illness-related experience and behaviour. The Revised Illness Perception Questionnaire (IPQ-R) for genetic predisposition (IPQ-R-GP) was developed to measure illness perceptions in those genetically-predisposed to blood disease. We adapted the IPQ-R-GP to measure perceptions of generalized cancer predisposition. This paper describes the development and validation of the Cancer Predisposition Perception Scale (CPPS). Methods The draft CPPS scale was first administered to 167 well Hepatitis B carriers and 123 other healthy individuals and the factor structure was examined using Exploratory Factor Analysis. Then the factor structure was confirmed in a second sample comprising 148 healthy controls, 150 smokers and 152 passive smokers using Confirmatory Factor Analysis (CFA). Results Six-factors comprising 26 items provided optimal fit by eigen and scree-plot methods, accounting for 58.9% of the total variance. CFA indicated good fit of the six-factor model after further excluding three items. The six factors, Emotional representation (5 items), Illness coherence (4 items), Treatment control (3 items), Consequences (5 items), Internal locus of control (2 items) and External locus of control (4 items) demonstrated adequate-togood subscale internal consistency (Cronbach's a = 0.63-0.90). Divergent validity was suggested by low correlations with optimism, self-efficacy, and scales for measuring physical and psychological health symptoms. Conclusion The CPPS appears to be a valid measure of perceived predisposition to generic cancer risks and can be used to examine cancer-risk-related cognitions in individuals at higher and lower cancer risk.-
dc.languageeng-
dc.relation.ispartofPLoS ONE-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleMeasuring and Validating a General Cancer Predisposition Perception Scale: An Adaptation of the Revised-IPQ-Genetic Predisposition Scale-
dc.typeArticle-
dc.identifier.emailLam, WWT: wwtlam@hku.hk-
dc.identifier.emailLiao, Q: qyliao11@hku.hk-
dc.identifier.emailWong, JHF: hfjwong@hku.hk-
dc.identifier.emailLai, CL: hrmelcl@hkucc.hku.hk-
dc.identifier.emailYuen, RMF: mfyuen@hku.hk-
dc.identifier.emailTsang, JWH: jwhtsang@hku.hk-
dc.identifier.emailFielding, R: fielding@hku.hk-
dc.identifier.authorityLam, WWT=rp00443-
dc.identifier.authorityLiao, Q=rp02100-
dc.identifier.authorityLai, CL=rp00314-
dc.identifier.authorityYuen, RMF=rp00479-
dc.identifier.authorityTsang, JWH=rp00278-
dc.identifier.authorityFielding, R=rp00339-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1371/journal.pone.0142620-
dc.identifier.pmid26559191-
dc.identifier.hkuros256306-
dc.identifier.volume10-
dc.identifier.spagee0142620-
dc.identifier.epagee0142620-
dc.identifier.isiWOS:000364433100103-
dc.relation.projectPerceptions of cancer risk and self-care practices: A comparison of groups at different risk for cancers-

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