Development of health literacy assessment scale for Thai stroke patients.

Background: One important factor influencing the treatment and rehabilitation results for stroke patients is their level of health literacy. In order to acquire comprehensive information for appropriate treatment and rehabilitation programs that will promote the optimal possible health outcomes, health literacy assessment should be done in stroke patients from the earliest stages of stroke onset.

Objectives: This research aimed to develop a health literacy assessment scale for Thai stroke patients and to evaluate the HL levels of those patients using that assessment scale.

Methods: A draft version of the scale has been developed based on the literature review and focus group discussions. After tryout, content validity, corrected item-total correlation and internal consistency were examined. A confirmatory factor analysis (CFA) was conducted in 400 patients with stroke to test the construct validity.

Results: The Health Literacy Assessment Scale for Thai Stroke Patients was successfully developed. The complete version featured 50 health literacy-related questions, along with seven demographic-related questions. This tool demonstrated good psychometric properties, including content validity (Item-objective congruence; IOC > 0.50), internal consistency (Cronbach's alpha = 0.951 to 0.955, overall = 0.94). Confirmatory factor analysis (CFA) also revealed good construct validity.

Conclusions: The Health Literacy Assessment Scale for Thai Stroke Patients (HLS-Th) is measuring five components cover all health literacy aspects necessary for Thai stroke patient. This novel measurement scale is an accurate psychometric tool for assessing the level of health literacy among Thai stroke survivors.