As a student as well with significant research experience, I believe your survey is far too simplistic to be of earth shattering value. Your limitation of the experiences (like panic attacks etc.) to under 10 times in the past month is just un-realistic for many PTSD sufferers. Everyone is different. My PTSD is characterized by mild symptoms... but many people are living in constant terror - a never ending flashback.
Echoing what has been said above, you should also expand your number treatments in the survey, ask how long each person has been using each treatment, and ask how much they feel they have improved on various symptoms (following the DSM) since beginning each type of treatment.
In my opinion, your concern with finishing the survey first then seeing what comes of it is missing the mark. You need a good survey in order to get good results.
Hope that helps.
Echoing what has been said above, you should also expand your number treatments in the survey, ask how long each person has been using each treatment, and ask how much they feel they have improved on various symptoms (following the DSM) since beginning each type of treatment.
In my opinion, your concern with finishing the survey first then seeing what comes of it is missing the mark. You need a good survey in order to get good results.
Hope that helps.