Table 1.

Summary of qualitative elaborations on each of the ORTO-15 items in the context of different English variants

ORTO-15 items	ORTO-11 version (Arusoglu et al. 2008)	ORTO-9 version (Missbach et al. 2015)	ORTO-7 version (Moller et al. 2018)	Qualitative analysis (Problematic items)
1. When eating, do you pay attention to the calories of the food?	–	–		13
2. When you go in a food shop do you feel confused?	–	–	–	15
3. In the last three months, did the thought of food worry you?				17
4. Are your eating choices conditioned by your worry about your health status?				16
5. Is the taste of food more important than the quality when you evaluate food?			–	21
6. Are you willing to spend more money to have healthier food?			–	10
7. Does the thought about food worry you for more than three hours a day?				12
8. Do you allow yourself any eating transgressions?		–	–	7
9. Do you think your mood affects your eating behaviour?	–	–		6
10. Do you think that the conviction to eat only healthy food increases self-esteem?			–	19
11. Do you think that eating healthy food changes your life-style (frequency of eating out, friends, …)?				13
12. Do you think that consuming healthy food may improve your appearance?			–	7
13. Do you feel guilty when transgressing?		–		12
14. Do you think that on the market there is also unhealthy food?		–	–	9
15. At present, are you alone when having meals?	–		–	4