I am aware of the paper you mentioned but doesn't that paper focus on depression? Not Panic Disorder or other anxiety disorders?
There's another serious problem with that study that I think we need to address. Yes, its true that several meds have to have a few studies done before one of them shows enough significance for the FDA to give approval. That doesn't exactly make the meds sound efficacious when 10 studies might have had to be done, 9 of them not showing much efficacy, & the 10th is the only one doing so.
However that issue is true of pretty much all meds that get FDA approval--statins, pain meds, chemotherapy meds, what have you. These same meds also have the same problem of unaccepted data that if added to the meta-analysis, would greatly reduce their perceived efficacy.
I sat through a grand rounds where a psychiatrist (forgot his name but he's on the forefront of antidepressant research, if you'd like, I can call up the program to ask for his name) also used unpublished data on other nonpsychiatric meds such as statins to show the same problems with them as well.
Its the old Peter Breggin argument he uses to attack psyche meds. He brings up some great points, but the arguments he brings up call into the question the efficacy of any medication, but he selectively chooses to attack psychiatry & not the entire process. (e.g. he mentions that he believes medication will always beat placebo because medications cause side effects, & when side effects are experienced, the patient will then believe they have a medication that is at least doing something--> creating a cognitive distortion that it'll help their ailment. While this may in fact be true (and no one as far as I know has ever addressed that issue), he only uses it to attack psychiatric meds. Why not attack chemotherapy meds, statins, coagulation meds, the whole spectrum of all meds with this argument? Why does he only choose to attack psyche meds?)
I'm not saying that we should ignore this data. Heck if the truth is some of these meds don't work or as well as we thought, we need to know this & so do our patients. I'm saying that all fields of medicine, all the meds of those fields should also have this level of scrutiny.
By the way, and this is something I was not able to have answered by this paper or had anyone be able to answer. Several studies are not accepted or published, not only because no significance was found, but also because some studies are thrown out because of faulty data gathering or other poor practice during the study. They were in fact just bad studies which if graded would've gotten an F. I questioned if some of the studies that were not accepted that were used in this meta-analysis that got so much hype were due to being of poor quality. I never was able to get an answer on that. I'll double check that study because it might address that question.
(I double checked, it still didn't address it or I missed the part that did address it)
Personally for me, the best source on antidepressants we got so far is the STAR*D, which is considered to have been well done, involved thousands of patients at several centers & was conducted by a the NIMH. Even that study too points out antidepressants as far from being a miracle therapy, however it did not leave several questions in my mind open as the above study did.