BACKGROUND/OBJECTIVES: The prevalence of dementia, a complication of uncontrolled type 2 diabetes (T2DM), is rising among older adults. Effective self-management for dementia prevention is essential, but no validated questionnaires currently exist to evaluate these behaviors.

METHODS

The Dementia Preventive Individual and Family Self-Management Process Questionnaire (DP-IFSM-PQ) and the Dementia Preventive Self-Management Behavior Questionnaire (DPSMBQ) were developed based on the Individual and Family Self-Management Theory to evaluate dementia prevention self-management behaviors in older adults with T2DM. Items for the DP-IFSM-PQ (30 items) and DPSMBQ (29 items) were generated through literature review and tested for face validity. A quantitative cross-sectional study evaluated their psychometric properties using exploratory factor analysis (EFA) (n = 311) and confirmatory factor analysis (CFA) (n = 254).

RESULTS

The final DP-IFSM-PQ comprises four factors and 29 items, showing acceptable fit with limited discriminant validity. The DPSMBQ includes seven factors and 27 items, demonstrating good fit and acceptable discriminant validity.

CONCLUSIONS

The Thai-language DP-IFSM-PQ and DPSMBQ show reasonable psychometric properties for application in Thai older adults, but revisions of certain items and further studies are recommended to reassess their properties.