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Prevalence of DID
DID/Trauma/Memory Reference List
Prevalence of DID

3-8% of inpatient populations (Saxe, et al., 1993 - U.S.; Ross, 1991; Ross, et al, 1991 - CANADA; Boon & Draijer, 1993 - NETHERLANDS; Knudsen, et al, 1995 - NORWAY) Nonclinical samples reveal approximately a 10% DD rate and a 1% MPD rate.

There has not been a single prevalence study to date that does not find DID in both clinical and non-clinical samples.

Anderson, G., Yasenik, L, & Ross, CA (1993). Dissociative experiences and disorders among women who identify themselves as sexual abuse survivors. Child Abuse and Neglect, 17, 677-686.

Goff, DC, Olin, JA, Jenike, MA, Baer, L, & Buttolph, ML. (1992). Dissociative symptoms in patients with obsessive-compulsive disorder. Journal of Nervous and Mental Disease, 180, 332-337.

Latz, TT, Kramer, SI, & Highes, DL (1995). Multiple personality disorder among female inpatients in a state hospital. American Journal of Psychiatry, 152, 1343-1348.

McCallum, KE, Lock, J, Kulla, M, Rorty, M, & Wetzel, RD. (1992). Dissociative symptoms and disorders in patients with eating disorders. Dissociation, 5, 227-235.  

Murphy, PE (1994). Dissociative experiences and dissociative disorders in a non-clinical university student group. Dissociation, 7(1), 28-34.
415 non-random sample. 9% (18) scored above 30 on the DES and were subsequently given the DDIS, along with a stratified random sample of 9 subjects who scored less than 30. Of the 18 scoring above 30 on the DES, 16 met criteria for one of the dissociative disorders, including 4 who met criteria for MPD.

Ross, CA. (1991). Epidemiology of multiple personality disorder and dissociation. Psychiatric Clinics of North America, 14, 503-517.

Ross, CA, Anderson, G, Fleisher, WP, & Norton, GR. (1991). The frequency of multiple personality disorder among psychiatric inpatients. American Journal of Psychiaty, 150, 1717-1720.

Ross, CA, Kronson, J, Doensgen, S, Barkman, K, Clark, P, & Rockman, G. (1992). Dissociative comorbidity in 100 chemically dependent patients. Hospital and Community Psychiatry, 43, 840-842.

Saxe, GN, van der Kolk, BA, Berkowitz, R., Chinman, G, Hall, K, Leiberg, G, & Schwartz, J. (1993). Dissociative disorders in psychiatric inpatients. American Journal of Psychiatry, 152, 1037-1042.

von Braunsberg, MJ (1994). Multiple personality disorder: An investigation of prevalence in three populations. Dissertation Abstracts International, ADG94-08430. New York: Syracuse University.

DID Prevalence Studies

Study N Sample DD % DID %
Anderson et al (1993) 51 Sexual abuse survivors 88.0 54.9
Davis & Davis 109 British outpatients 15.2 6.73
Goff et al (1992) 100 Obsessive compulsive 10.0 0.06
Latz, et al. (1995) 176 Females, state hospital 31.3 11.9
McCallum et al (1992) 38 Eating Disorder 29.0 10.0
Ross (1991) 454 Community residents 11.2 1.3
Ross, et al. (1991) 299 Inpatients 20.7 3.6
Ross, Kronson, et al (1992) 100 Chemically dependent 39.0 14.0
Saxe et al. (1993) 110 Inpatients 13.6 3.3
Von Braunsberg (1994) 100 Forensic psychiatric 22.0 17.0
Von Braunsberg (1994) 402 University students 3.5 0.5

There has never been a prevalence study of general clinical or non-clinical populations where DID was found to be rare or non-existent.

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