Psychometric properties of a prediabetes instrument to assess perceived susceptibility and perceived severity in Appalachians

J Nurs Meas. 2013;21(2):210-23. doi: 10.1891/1061-3749.21.2.210.


Background and purpose: The purpose of this study was to develop an instrument that assesses perceived susceptibility and perceived severity for individuals at risk but not yet diagnosed with type 2 diabetes living in Appalachia.

Methods: From 168 surveys, Cronbach's alpha and item-total correlations assessed reliability, confirmatory factor analysis confirmed construct validity (convergent and discriminant), and multiple linear regression determined concurrent criterion-related validity of perceived susceptibility and perceived severity scales. There were 22 in-depth interviews conducted to triangulate meaning of the scales' results.

Results: Discriminant validity was demonstrated via low interfactor covariation. Concurrent criterion-related validity was also established via significant regression coefficients and supplemental qualitative data.

Conclusions: This prediabetes screening instrument provides a strong foundation for measuring perceived susceptibility and perceived severity in Appalachian individuals who have prediabetes.

Publication types

  • Multicenter Study

MeSH terms

  • Adult
  • Appalachian Region / epidemiology
  • Discriminant Analysis
  • Disease Susceptibility
  • Factor Analysis, Statistical
  • Female
  • Humans
  • Interviews as Topic
  • Kentucky / epidemiology
  • Male
  • Prediabetic State / diagnosis*
  • Prediabetic State / epidemiology
  • Psychometrics*
  • Regression Analysis
  • Reproducibility of Results
  • Risk Assessment
  • Severity of Illness Index