The Thai Journal of Pharmaceutical Sciences
Article Title
Evaluation of psychometric properties of the Thai SF-12v2 in the general Thai population
Abstract
Background: This study investigated the psychometric properties of the Thai Short Form-12 Health Survey (SF-12v2) and reported SF-12v2 scale scores based on the general Thai population’s age and gender. Methods: Multistage sampling was used to recruit 1200 general Thai participants. For all SF-12v2 scales, item description, ceiling/floor effects, convergent validity for item-scale and SF-12v2 and EQ-5D correlations, known-group validity, exploratory factor analysis (EFA), test-retest reliability, and responsiveness were studied. Results: Ceiling effect was observed for all scales (5.8–72.6%). Floor effect was detected for all scales except for social functioning, role emotion, and mental health. Item-scale correlation coefficients ranged from 0.65 to 1.00. Moderate correlations between SF-12v2 and EQ-5D were observed. EFA yielded a two-factor structure accounting for 64% of the total variance. Scale scores were lower among female, older, and poorly educated individuals and those with lower incomes and chronic diseases. Test- retest reliability demonstrated fair-to-good reproducibility for all scales (Intraclass correlation coefficients: 0.49–0.64). Moreover, the SF-12v2 was more sensitive to health deterioration than to health improvement. Conclusion: These preliminary results confirmed that the Thai SF-12v2 is valid and reliable. Therefore, the Thai SF-12v2 is an appropriate health-related quality of life instrument for the Thai population.
Publisher
Faculty of Pharmaceutical Sciences, Chulalongkorn University
First Page
552
Last Page
562
Recommended Citation
Kangwanrattanakul, Krittaphas
(2021)
"Evaluation of psychometric properties
of the Thai SF-12v2 in the general Thai population,"
The Thai Journal of Pharmaceutical Sciences: Vol. 45:
Iss.
6, Article 14.
Available at:
https://digital.car.chula.ac.th/tjps/vol45/iss6/14