One big issue not addressed in this post, how is MAPS differentiating between PTSD and BLAST[1] in this CT? They have identical symptoms, but one is psychological and one is physical. Being unable to differentiate them could cause some SERIOUS error in the results. Have you thought about how you are going to address that?
[1]BLAST is a traumatic brain injury similar to CTE. It is caused by shockwaves emanating from explosives. Symptoms are near identical to PTSD.
If their target audience is PTSD patients, they are looking at a primarily veterans as participants. It's pretty hard to determine if a veteran was exposed to an explosion or not.
An enormous number of people suffer from PTSD who are not veterans. People who have been raped, witnessed crimes, etc. could all suffer PTSD. Trauma can be almost anything if it causes a negative impact (e.g., depression, anxiety) in the future, and persons suffering from depression or anxiety as a result of such trauma would likely be diagnosed with comorbid PTSD.
[1]BLAST is a traumatic brain injury similar to CTE. It is caused by shockwaves emanating from explosives. Symptoms are near identical to PTSD.