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ORIGINAL RESEARCH
Year : 2019  |  Volume : 11  |  Issue : 3  |  Page : 132-136

Reliability and validity of the thai version of rapid estimate of adult literacy in dentistry


1 Doctoral of Public Health Program, Faculty of Public Health, Khon Kaen University, Khon Kaen, Thailand
2 Department of Preventive Dentistry, Faculty of Dentistry, Khon Kaen University; Research Group on Prevention and Control of Diabetes Mellitus in the Northeast Region, Faculty of Public Health, Khon Kaen University, Khon Kaen, Thailand
3 Research Group on Prevention and Control of Diabetes Mellitus in the Northeast Region; Department of Health Administration, Health Promotion, and Nutrition, Faculty of Public Health, Khon Kaen University, Khon Kaen, Thailand
4 Department of Health Administration, Health Promotion, and Nutrition, Faculty of Public Health, Khon Kaen University, Khon Kaen, Thailand

Correspondence Address:
Dr. Rajda Chaichit
Department of Preventive Dentistry, Faculty of Dentistry, Khon Kaen University, Khon Kaen 40002
Thailand
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jioh.jioh_51_19

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Aims: The study aimed to evaluate the reliability and validity of the Thai version of Rapid Estimate of Adult Literacy in Dentistry (ThREALD-30). Materials and Methods: The Rapid Estimate of Adult Literacy in Dentistry-30 items (REALD-30) was translated to Thai language and back-translation process to English version of REALD-30 by experts of dentistry and linguistics. This cross-sectional study was conducted with a sample of 1110 patients from the five provinces in Northeast of Thailand. All variables were performed by descriptive statistics. The quality of the development tool of ThREALD-30 was tested internal consistency, reliability, and validity from construct validity and predictive validity correlated with Thai Oral Health Impact Profile 14 items (Thai OHIP-14) and Oral health status, respectively. The statistics were analyzed using STATA version 10. Results: A total of 1110 adult patients with a mean age was 51.11 + 6.63 years old. The reliability of ThREALD-30 was excellent (α = 0.950; intraclass correlation coefficient = 0.970, 95% confidence interval: 0.939–1.000). The construct validity was evaluated to indicate the subscales of ThREALD-30 being trustable by showing the correlation coefficient with their own dimension between 0.345 and 0.773, and predictive validity from Spearman's with Thai OHIP-14 (rrho= −0.688, P < 0.001) and oral health status; decayed, missing, and filled teeth (rrho = −0.283, P < 0.001); Oral Hygiene Index Simplified (rrho = −0.432, P < 0.001); and clinical attachment loss (rrho= −0.470, P < 0.001), supporting the construct and criterion validity. Conclusion: ThREALD-30 is an oral health literacy tool that worked well in the Thai population. It offers a valid and reliable instrument for measuring oral health outcome of the individual in community settings.


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