I've been to hundreds (maybe thousands?) of AA meetings...so I'm more than qualified to make my own observations about the program and share my personal experience.
In multiples articles I mention AA's success rate, while qualifying that it's not an exact science--just best guess estimates--because of AA's anonymous nature.
With that said, I can't count how many times I heard "Only 1 out of 10 will make it" at AA meetings from AA members--so you know exactly what I'm talking about.
But, I'll humor you since you need your own personal resource link...
https://www.npr.org/2014/03/23/291405829/with-sobering-science-doctor-debunks-12-step-recovery