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Psychometric evaluation of the acute coronary syndrome (ACS) response index
Author(s) -
Riegel Barbara,
McKinley Sharon,
Moser Debra K.,
Meischke Hendrika,
Doering Lynn,
Dracup Kathleen
Publication year - 2007
Publication title -
research in nursing and health
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 85
eISSN - 1098-240X
pISSN - 0160-6891
DOI - 10.1002/nur.20213
Subject(s) - acute coronary syndrome , medicine , psychometrics , coronary heart disease , reliability (semiconductor) , clinical psychology , exploratory factor analysis , scale (ratio) , physical therapy , psychology , myocardial infarction , power (physics) , physics , quantum mechanics
Knowledge, attitudes, and beliefs of persons with ischemic heart disease are important predictors of delay in seeking treatment. We tested the psychometric profile of the Acute Coronary Syndrome (ACS) Response Index, a measure assessing patient knowledge, attitudes and beliefs about ACS symptoms and response, in 3,522 patients. On factor analysis, 21 dichotomous knowledge items loaded onto four factors (alpha .82). In a separate factor analysis, another five items loaded on two attitude factors, and seven items loaded on two belief factors (alpha .76). The scales discriminated between patients previously exposed to medical experts. Scale scores were significantly correlated but without evidence of multicolinearity. Initial tests of reliability and validity support further testing of this new instrument. © 2007 Wiley Periodicals, Inc. Res Nurs Health 30:584–594, 2007