[thaumasiotes]

> A large proportion of suicide attempts are people who go on to regret it and successfully seek treatment.

A different conclusion you could draw from this are that the failed attempts failed because they weren't really trying to kill themselves, a sort of regretting-in-advance, if you will. I feel pretty safe in saying that successful suicide attempts don't go on to regret it, and it's not at all obvious that the failures and the successes are examples of the same phenomenon.