Uncut southern boy, the 5-7% post neonatal "for medical reasons" circumcisions are for people left uncut at birth and need to be cut later on.
Baby circumcision are not done for "medical" reasons, they are done for prevention/looks/social reasons. (jews do their circumcisions outside of the medical system, so "religious" reasons would not be counted anyways).
That is just what the article said. I just quoted it. I have read that some boys needed circumcising because their foreskins are so tight urine can not pass through and the foreskin balloons. Whatever.
I suppose that constitutes a "medical" reason.