Evaluation of a Persian version of the Adelaide driving self-efficacy scale among Iranian older adults

Abstract

Objective

Our aim in the present study was to estimate the psychometric properties of the full-length Adelaide driving self-efficacy scale (ADSES) for use among community-based resident older adults in Tehran, Iran.

Methods

We recruited older adults (60+ years) from various sampling units nested in the Tehran district’s general urban population (20 subjects/questionnaire-item). The questionnaire was translated and back-translated by using recommended pathways. Multiple forms of validity and reliability, including Cronbach alpha, were estimated. Also, we measured intra-class correlation coefficient, and did confirmatory factor analysis (CFA).

Results

A total of 243 participants (mean age: 65.8, 95%CI 65.4–66.3) met our inclusion criteria. For ADSES, the alpha coefficient was 0.77, the intraclass correlation coefficient was 0.97 (95% CI: 0.95–0.98), and the average item-test correlation was 0.67. Upon CFA, we found a 0.95 comparative fit index, a coefficient of determination = 92.6%, and standardized size of the residual = 0.04.

Conclusion

Our Persian language ADSES was found to have adequate validity and factor structure parameters for evaluating driving self-efficacy among community-based older adults in a non-western context. Our questionnaire is an essential first step toward evaluating driving self-efficacy among older adults, especially where no such tool is available, to help develop driving self-efficacy as a healthy aging measure.

Keywords:

• Epidemiology
• health
• aging
• intervention
• self-efficacy
• driving

Acknowledgments

We thank all our participants for providing their time and participation.

Disclosure statement

DB receives research funds, and attends and gives a talk in meetings that may have been funded directly or indirectly by commercial entities. The author is covered under the authority of a UN treaty based public International Law. All other authors have no conflicts of interest.

Data availability

All data generated or analyzed during this study are included in this published article.

Additional information

Funding

The funding for this study was procured from Student Research Committee, Tabriz University of Medical Sciences, and Tabriz, Iran. The funding agency had no role in designing, data collection, analysis or the interpretation of results.