I don't think a lot of you people understand this kind of thing. :P
Nobody is going to automatically assume that you, as an individual, have a problem that is a direct result of video games. When it's finished, if 60% of the people who took the survey who game for 8 hours a day also suffer from schizophrenia or something, that's when the eyebrows start being raised and different possibilities as to why the correlation exists will be examined.
Stop acting like they're assuming gamers are sick, twisted little cretures, and stop acting like your own answers have a profound effect on the results and will make or break the accuracy of the thing.
If 0.5% of gamers suffer from headaches once every few days, nobody is going to take it as anything but a coincidence.