**14. Survey instrument**

The questionnaire comprised of three sections namely, the demographics, the knowledge of added sugar and the use of nutrition labels. The questionnaire had only two measurement scales namely, the 'simple category and multiple-choice' ([32]:105) for demographic and knowledge questions. Additionally, a picture depicted in **Figure 1** was used to test the respondents' understanding and interpretation of the terminology used on the nutrition label.

**Figure 1.** *Nutrition label of 330 ml Coca-Cola can.*
