Since you asked...No, suicide is not classified as unintentional. Nor is homicide! That is not a chart of unintentional injury, but of all injury, with unintentional causes highlighted by being colored, while suicide and homicide are in white.
Oops! Thanks for catching that.
This Chart Shows The Worst Diseases That Don't Get Enough Research Money
We have already covered this topic several times on LW, but what prompted me to link this was this remark:
[Edit: a former, dumber version of me had asked, "I wonder what criterion the author would prefer," before the correct syntax of the sentence was pointed out to me.]
Opinions?