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Development of a self-efficacy scale for mammography
Victoria Champion1, Celette Sugg Skinner, Usha Menon
1Indiana University, School of Nursing, Indianapolis, IN, USA.
Research in Nursing & Health
|July 20, 2005
Summary
Developing a mammography self-efficacy scale can help increase breast cancer screening adherence. This validated instrument measures women's confidence in obtaining mammograms, aiming to improve screening rates and reduce mortality.
Area of Science:
- Health Behavior
- Medical Screening
- Psychometrics
Background:
- Mammography screening significantly reduces breast cancer mortality.
- Despite improved adherence, increasing annual screening remains a public health priority.
- Self-efficacy, a key behavioral predictor, requires validated, behavior-specific measurement.
Purpose of the Study:
- To develop and validate a self-efficacy instrument for mammography screening.
- To measure women's confidence in obtaining mammograms.
Main Methods:
- Instrument development guided by Bandura's self-efficacy model.
- Confirmatory factor analysis and logistic regression for construct validity.
- Cronbach's alpha for internal consistency reliability.
Main Results:
- The Mammography Self-Efficacy Scale demonstrated good internal consistency reliability (Cronbach's alpha = .87).
- The scale evidenced strong content and construct validity.
- The instrument is suitable for measuring confidence in obtaining mammograms.
Conclusions:
- The developed scale is a valid and reliable tool for assessing mammography self-efficacy.
- This instrument can be utilized to identify barriers and promote adherence to breast cancer screening.
- Enhancing self-efficacy may contribute to increased mammography screening rates and decreased breast cancer mortality.