Validity testing of the long-term medication behavior self-efficacy scale

Kris Denhaerynck, Ivo Abraham, Greta Gourley, Gerda Drent, Peter De Vleeschouwer, Doreen Papajcik, Elaine Lince, Sabina De Geest

Research output: Contribution to journalReview article

18 Scopus citations

Abstract

Self-efficacy is an important determinant of health behavior that can be targeted for intervention. Little effort has been given to the development of valid measures for self-efficacy with medication taking for adherence research. The purpose of this study was to determine the criterion validity of the Long-Term Medication Behavior Self-Efficacy Scale (LTMBSES). Individual patient data from 6 existing adherence studies in transplant, hyperlipidemia, and AIDS/HIV patients (n = 1021) were pooled. Validity was determined by assessing the relation between the LTMBSES score and medication adherence - both self-reported and electronically monitored. A weak relationship was found between the LTMBSES score and adherence, which can possibly be attributed to a ceiling effect, caused by a too homogeneous population and/or a failure of the scale to challenge patients. Generalized Estimating Equations revealed that the total average self-efficacy score predicted reported medication adherence (p < .0001). The Receiver Operating Characteristic curve revealed the area under the curve was 0.67, indicating a significant (p < .0001), but poor predictive capability. Evidence for criterion validity of the Long-Term Medication Behavior Self-Efficacy Scale is not yet convincing. Future research should focus on: (1) validation in a population with a more heterogenous level of adherence, and (2) making the scale more challenging by referring to "always taking the medication without exception.".

Original languageEnglish (US)
Pages (from-to)267-282
Number of pages16
JournalJournal of nursing measurement
Volume11
Issue number3
DOIs
StatePublished - Jan 1 2003
Externally publishedYes

Keywords

  • Patient compliance
  • Psychometrics
  • Self-efficacy

ASJC Scopus subject areas

  • Nursing(all)

Fingerprint Dive into the research topics of 'Validity testing of the long-term medication behavior self-efficacy scale'. Together they form a unique fingerprint.

  • Cite this

    Denhaerynck, K., Abraham, I., Gourley, G., Drent, G., De Vleeschouwer, P., Papajcik, D., Lince, E., & De Geest, S. (2003). Validity testing of the long-term medication behavior self-efficacy scale. Journal of nursing measurement, 11(3), 267-282. https://doi.org/10.1891/jnum.11.3.267.61271