Psychometric Properties of the Perceived Therapeutic Efficacy Scale for Adhering to a Cholesterol-Lowering Diet
DC Field | Value | Language |
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dc.contributor.author | Zheng, Yaguang | - |
dc.contributor.author | Terhorst, Lauren | - |
dc.contributor.author | Choo, Jina | - |
dc.contributor.author | Burke, Lora E. | - |
dc.date.accessioned | 2021-09-05T09:04:54Z | - |
dc.date.available | 2021-09-05T09:04:54Z | - |
dc.date.created | 2021-06-15 | - |
dc.date.issued | 2014-05 | - |
dc.identifier.issn | 0889-4655 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/98596 | - |
dc.description.abstract | Background: Outcome expectancy may play an important role in behavior change. Previous studies tested the validity and the reliability of the Perceived Therapeutic Efficacy Scale (PTES), a scale that measures outcome expectancy related to adhering to a cholesterol-lowering diet. Further study was needed to examine its psychometric properties in a larger sample. Objective: The aim of this study was to test the psychometric properties of the 10-item PTES in a large sample. Methods: The PTES and the Connor Diet Habit Survey were administered to adults enrolled in a cardiac rehabilitation program. Results: The final sample for the analysis (N = 224) was, on average, 69.35 years old and was predominantly men (66.50%) and white (92.40%); nearly all (96.00%) completed high school. The inter-item correlation matrix revealed that correlation coefficients were greater than 0.80 between 4 pairs of items, suggesting that the 4 items were redundant. After consulting with a content expert and an examination of item content, we removed the 4 redundant items (items 2, 3, 4, and 10) and reduced the scale to 6 items. Principal component analysis revealed a 1-factor scale with high loadings for the 6 items, each greater than 0.70. The reliability of the scale, measured by Cronbach's , was 0.91. The total PTES score had a moderate correlation with self-reported behaviors of adhering to a cholesterol-lowering diet, as measured by the Connor Diet Habit Survey subscale for cholesterol and fat intake (r = 0.36, P < 0.05). Conclusions: This study demonstrated that the revised and shortened PTES scale is reliable and valid to measure outcome expectancy related to adhering to a cholesterol-lowering diet. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | LIPPINCOTT WILLIAMS & WILKINS | - |
dc.subject | BEHAVIOR-CHANGE | - |
dc.subject | ADHERENCE | - |
dc.title | Psychometric Properties of the Perceived Therapeutic Efficacy Scale for Adhering to a Cholesterol-Lowering Diet | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Choo, Jina | - |
dc.identifier.doi | 10.1097/JCN.0b013e31828f910f | - |
dc.identifier.scopusid | 2-s2.0-84899493417 | - |
dc.identifier.wosid | 000337681400011 | - |
dc.identifier.bibliographicCitation | JOURNAL OF CARDIOVASCULAR NURSING, v.29, no.3, pp.257 - 263 | - |
dc.relation.isPartOf | JOURNAL OF CARDIOVASCULAR NURSING | - |
dc.citation.title | JOURNAL OF CARDIOVASCULAR NURSING | - |
dc.citation.volume | 29 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 257 | - |
dc.citation.endPage | 263 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | ssci | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Cardiovascular System & Cardiology | - |
dc.relation.journalResearchArea | Nursing | - |
dc.relation.journalWebOfScienceCategory | Cardiac & Cardiovascular Systems | - |
dc.relation.journalWebOfScienceCategory | Nursing | - |
dc.subject.keywordPlus | BEHAVIOR-CHANGE | - |
dc.subject.keywordPlus | ADHERENCE | - |
dc.subject.keywordAuthor | diet therapy | - |
dc.subject.keywordAuthor | psychometrics | - |
dc.subject.keywordAuthor | self-efficacy | - |
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