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Reliability and validity of the self-efficacy and outcome expectations for osteoporosis medication adherence scales
Barbara Resnick1, Lois Wehren, Denise Orwig
1University of Maryland School of Nursing, USA.
Purpose:
The purpose of this study was to test the reliability and validity of the self-efficacy and outcome expectations for osteoporosis medication adherence measures (SEOMA and OEOMA).
Design:
This was a descriptive study involving a single face-to-face interview.
Sample:
The study included 152 older adults with a mean age of 85.7 (+) 5.5 years, the majority of whom were Caucasian (99%), female (74%), and unmarried (75%).
Methods:
In addition to the SEOMA and OEOMA measures, demographic information (age, gender, and marital status) and other health behaviors (exercise and osteoporosis medication use) were explored.
Results:
There was evidence of reliability of the SEOMA and OEOMA based on internal consistency and R values. Evidence of the validity of the SEOMA and OEOMA measures was based on confirmatory factor analysis and hypothesis testing.
Conclusion:
This study is an important first step to developing reliable and valid measures of self-efficacy and outcome expectations for adherence to osteoporosis medications.
Implications For Nursing Practice:
The SEOMA and OEOMA can be used to evaluate self-efficacy and outcome expectancy beliefs related to osteoporosis medication use in older adults and interventions developed to strengthen those beliefs and improve medication adherence.
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