Table 1.

Interview Guide Protocol to Conduct the Qualitative Interview

Main questions	Probes
1. Please explain about all kinds of foods that you     consumed daily.	- Consumed foods at weekend and during the week - Snacks - Dietary habits
2. What are your criteria for selecting foods?
3. How much do you eat and what do you eat when     you are happy, sad or angry?
4. What is your opinion about Halal and Haram foods?*
5. Please tell us about your parents' dietary habits.	- Method to prepare foods - Food resources
6. Has your dietary habits changed since childhood?	- If your answer is yes, please clarify the time and kind of changes.
7. What are the reasons of dietary habit changes?
8. What are the factors induced to not choose your     favorite foods?
9. If the condition is desirable, will there be changes in     your choices?
10. What are your food choices in special occasions like     Ramadan?	- Kinds of foods - Amounts of foods
11. How are your food choices in various seasons?	- Kinds of foods - The reasons of selections
12. Is there any person whose opinion is important for     you to choose foods?	- Who and what
13. How are your food choices in various situations in     terms of time and place?	- Regularity - Place and persons which are with you
14. What is your opinion about local and traditional     foods?

* Forbidden or non-forbidden foods in Islam