Dear Pharmboy,
"For depression, hospitalization often follows significant suicidal ideation and/or a suicide attempt."
I realize that, but I didn't see any reference to an involuntary committal, here, or to suicide attempts. It's speculation that Mr. Burkett's committal was involuntary. It may have been, but we ought to refrain from drawing conclusions as if it were an established fact, because it isn't.
I've known more than one person who committed themselves to mental hospitals when they knew that psychologically, things were too much for them.
That doesn't mean that they'd met the threshhold for "significantly mentally ill," as MindBender26 put it, or for being a danger to themselves or others.
sitetest
And, I would speculate that depression is associated with a low rate of self-referral--just because of the nature of the disorder. They don't do much of anything.