The diet-non-varied factor needs to be reversed in the back-end.

[ThomasStorli]

A common problem is that the question "Is your diet non-varied" is very hard to understand, because of this we should just hardcode that diet-non-varied is a specific case where if the answer is True then it should be treated as False.

The front-end question will then be something like "Do you have a varied diet".

The diet-non-varied keyword should be changed to diet-varied