title: Instrument development: cardiac diet and exercise self-efficacy.
abstract: Self-efficacy has been documented as a strong predictor of health behaviors. Unfortunately, availability of reliable and valid measures of self-efficacy for a range of health behaviors is still limited. This study validated two measures of cardiac risk factor self-efficacy: the Cardiac Diet Self-Efficacy Instrument (CDSEI) and the Cardiac Exercise Self-Efficacy Instrument (CESEI). A sample of 370 cardiac rehabilitation participants provided data for principal factor analyses showing the unidimensionality of each instrument. Known groups construct validity was supported by a comparison of CDSEI and CESEI scores for cardiac rehabilitation participants and marathon runners. The value of CDSEI and CESEI scores in predicting subsequent exercise and diet performance was demonstrated with a third group of cardiac rehabilitation participants. Stability and internal consistency estimates in the .80s and .90s, respectively, support the scales' reliabilities.
authors.affiliation: Yale University School of Nursing, New Haven, CT.
authors.forename: M L
authors.initials: ML
authors.lastname: Hickey
authors.forename: S V
authors.initials: SV
authors.lastname: Owen
authors.forename: R D
authors.initials: RD
authors.lastname: Froman
mesh_terms: D000328:Adult; D000368:Aged; D000072038:Cardiac Rehabilitation; D002318:Cardiovascular Diseases / Q000453:epidemiology / Q000517:prevention & control*; D015444:Exercise; D005247:Feeding Behavior; D005260:Female; D015438:Health Behavior; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D015397:Program Evaluation; D012044:Regression Analysis; D015203:Reproducibility of Results; D012307:Risk Factors; D012420:Running