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Evaluation of the shortened cholesterol-lowering diet self-efficacy scale

Burke, LE and Kim, Y and Senuzun, F and Choo, J and Sereika, S and Music, E and Dunbar-Jacob, J (2006) Evaluation of the shortened cholesterol-lowering diet self-efficacy scale. European Journal of Cardiovascular Nursing, 5 (4). 264 - 274. ISSN 1474-5151

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Specificity in the self-efficacy construct requires that instruments assess domain-specific behaviors. The objectives of the study were to (1) reexamine and shorten the original 57-item Cholesterol-Lowering Diet Self-Efficacy Scale (CLDSES), (2) estimate reliability and validity of the short form CLDSES (CLDSES-SF), (3) examine the dimensionality of the CLDSES-SF, (4) examine discriminant validity of the scale by its ability to differentiate between adherence and nonadherence to saturated fat intake guidelines, and (5) examine the CLDSES-SF's sensitivity and specificity. A sample of 238 patients being treated for hypercholesterolemia completed three instruments: the CLDSES, the Connor Diet Habit Survey (DHS) and a Three-Day Food Record. Internal consistency for the CLDSES-SF was .95. The inter-correlation coefficients among the seven sub-scales ranged from .28 to .62, and for the total to sub-scales .58 - .87, significant at p < .001. Evidence for criterion validity was shown in the correlations between the CLDSES-SF and the Connor DHS scores and between the CLDSES-SF and the Three-Day Food Record. Factor analysis showed a one-factor model that fits the data with a sufficient amount of total variance explained among the seven subscale items in each subscale, providing evidence of the uni-dimensionality of each subscale. Sensitivity (76%) and specificity (63%) for the CLDSES-SF were good with 88% positive predictive value for adherence. The shortened CLDSES retained its good psychometric properties and remains comprehensive in its assessment of self-efficacy for adherence to a cholesterol-lowering diet. © 2006 European Society of Cardiology.


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Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Burke, LElbu100@pitt.eduLBU1000000-0003-2434-9867
Kim, Y
Senuzun, F
Choo, J
Sereika, Sssereika@pitt.eduSSEREIKA
Music, E
Dunbar-Jacob, Jdunbar@pitt.eduDUNBAR
Date: 1 December 2006
Date Type: Publication
Journal or Publication Title: European Journal of Cardiovascular Nursing
Volume: 5
Number: 4
Page Range: 264 - 274
DOI or Unique Handle: 10.1016/j.ejcnurse.2006.03.005
Schools and Programs: School of Nursing > Nursing
Refereed: Yes
ISSN: 1474-5151
MeSH Headings: Aged; Cholesterol, Dietary--administration & dosage; Diet, Fat-Restricted--psychology; Discriminant Analysis; Factor Analysis, Statistical; Female; Food Habits--psychology; Health Knowledge, Attitudes, Practice; Humans; Hypercholesterolemia--diet therapy; Hypercholesterolemia--psychology; Male; Middle Aged; Nursing Assessment; Nursing Evaluation Research; Patient Compliance--psychology; Psychometrics; Questionnaires--standards; ROC Curve; Self Efficacy; Sensitivity and Specificity; Socioeconomic Factors
PubMed ID: 16690358
Date Deposited: 18 Sep 2012 14:37
Last Modified: 25 Jan 2022 11:55


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