I've been thinking about this...
Columbia has 96% postdoctoral placement. so if you dont include GPR, AEGD, UNIF. SVC., NHSC, Fellowships and Dual Degrees, its actually 47%. This is close to UCLA, which from what I recall, has a speciality rate of 55%. At UCSF on the other hand, half the students go into postdoctoral and of those half are "true" specialities as Dr. Betbeze refered to them.
!BUT! I wouldn't be tooooo concerned with these numbers, though b/c you have to take into account the fact that we don't know the percentage that even applied to these specialities. Surely if 47% of columbia applied for speciality and 100% got in, that says something different than if 90% of UCLA applied and only 55% were accepted, for example.
SInce we probably wont ever get that information, I think at the end of the day we should base our decision on the focus of the school. Columbia's curriculum seems specialty-focused and many of its students seem to go to the school with this as their goal. UCLA/UCSF on the other hand, i feel are not as intense in this respect and rather balanced, which works out for someone like me who doesn't know if they want to specliaize yet but would like to keep the option open.
SoO in conclusion........ 55%, 47%, 25%, who cares! I promise you no matter where you go your chances of success will depend on the effort you invest in your time there, and not solely on these statistics. At any rate, i wish all of you limitless success in all your endeavors!