Found:

Of the 236 DID patients studied by Ross, Norton, and Wozney (1989), 72% had attempted suicide, and 2.1 % had killed themselves.

Ofthe one hun- dred recent cases studied by PUlliam, Curoff, Silberman, Barban, and Post (1986), 61% had made serious suicide attempts and 71 % had made suicide gestures. One patient had suicided. Furthermore, 53% reported attempts at inter- nal suicides or homicides; i.e., the attempt of one personal- ity to kill another. In 34% of their cases one or more per- sonalities would mutilate the body to punish another alter.

The going rate in other studies of a group is 1%-2%. Patients were comorbid with depression, BPD, substance abuse, or another disorder.