Development and Psychometric Testing of the Thai-Nutrition Literacy Assessment Tool for Adolescents

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Suhong Deesamer
Noppawan Piaseu
Wantana Maneesriwongul
Pisamai Orathai
Karen G. Schepp


                 Nutrition literacy is a major component contributing to healthy food consumption behaviors and prevention of diet-related non-communicable diseases; however, existing nutrition literacy assessment tools are limited in their ability to assess Thai adolescents. We report in part the findings of a larger study that used qualitative and quantitative methods to develop and test the psychometric properties of Thai-Nutritional Literacy Assessment Tool for Adolescents. A descriptive design consisting of two phases and six steps was used.

                  A literature review and in-depth interviews (n=30) were employed to clarify the concept of nutrition literacy in Thai adolescents and generate the items, and in-depth findings regarding these will be reported elsewhere. Content validity was reviewed by a panel of seven experts, whereas face validity was conducted in 10 Thai adolescents. Then, preliminary testing was undertaken with 275 Thai adolescents, and item analysis performed. The final version of this instrument consisted of 61 items. Psychometric testing used concurrent validity to examine the association with the Thai Healthy Eating index as a gold standard. Analysis of the discrimination index revealed that baseline criteria were met. Construct validity using the known-group technique was employed, revealing that nutrition literacy score on energy balance was higher in the healthy group than the unhealthy group.

         This is the first instrument aiming to measure nutrition literacy among Thai adolescents, that focuses on understanding the functional, interactive and critical nutrition literacy in various situations. Our instrument has sufficient reliability and validity, and nurses and other health professionals can apply it for nutrition literacy screening and determine suitable interventions for Thai adolescents. Further testing of the instrument warranted with other populations in Thailand.

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Deesamer S, Piaseu N, Maneesriwongul W, Orathai P, Schepp KG. Development and Psychometric Testing of the Thai-Nutrition Literacy Assessment Tool for Adolescents. PRIJNR [Internet]. 2020 Jan. 2 [cited 2022 Dec. 9];24(1):5-19. Available from:
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