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Development of a self‐efficacy scale for mammography
Author(s) -
Champion Victoria,
Skinner Celette Sugg,
Me Usha
Publication year - 2005
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.20088
Subject(s) - cronbach's alpha , construct validity , mammography , confirmatory factor analysis , reliability (semiconductor) , logistic regression , scale (ratio) , self efficacy , clinical psychology , psychology , medicine , psychometrics , construct (python library) , breast cancer , statistics , social psychology , cancer , structural equation modeling , computer science , power (physics) , physics , mathematics , quantum mechanics , programming language
Mammography screening has been demonstrated to decrease mortality from breast cancer. Although adherence rates have increased, there is still a need to increase annual screening. Self‐efficacy is a construct that has been found useful in predicting behaviors. Measurement of self‐efficacy needs to be specific to the behavior and to have good validity and reliability. The purpose of this study is to describe development of a self‐efficacy instrument to measure confidence in obtaining a mammogram. Bandura's model guided item development. Construct validity was measured using confirmatory factor analysis and logistic regression. Cronbach alpha was used to test internal consistency reliability. A Cronbach alpha coefficient of .87 was obtained. The mammography self‐efficacy scale evidenced content and construct validity. © Wiley Periodicals, Inc. Res Nurs Health 28:329–336, 2005