I did it, but I don't know how useful my responses will be. Many of the options were not really applicable to me. Another thing to point out- the first question asks if you are, you know somebody, think you know somebody... I have 2 family members who have suffered from ptsd, one combat related and the other, my spouse, from other life events. And I'm here on these boards because there's a possibility that I do, too. So those are all applicable. Then the next question asks about you or the person you know suffering from ptsd, but doesn't allow for separate responses if that encompasses multiple people. See what I'm saying?
Good luck on your project! I know designing a questionnaire is frustrating. Boy I know it. lol