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Table 3 Lifetime comorbidity: OCD vs TTM

From: Obsessive-compulsive disorder and trichotillomania: a phenomenological comparison

Disorder OCD (N = 130) TTM (N = 49) χ2 P
Major depressive disorder 66.9% 49.0% 4.8 .03*
Dysthymia 13.8% 2.0% 6.8 .009**
Bipolar disorder 0.8% 0% 0.6 0.4
Panic disorder 20.8% 6.1% 6.4 .01*
Alcohol abuse 5.4% 2.0% 1.1 0.3
Alcohol dependence 0.8% 0% 0.6 0.4
Substance abuse 0.8% 4.1% 2.0 0.2
Substance dependence 1.5% 2.0% 0.1 0.8
Social phobia 10.0% 8.2% 0.1 0.7
Specific phobia 18.5% 18.4% 0.0 <1.0
Posttraumatic stress disorder 3.1% 0% 2.6 0.1
Generalized anxiety disorder 13.1% 20.4% 1.4 0.2
Body dysmorphic disorder 6.2% 6.1% 0.0 <1.0
Anorexia Nervosa 8.5% 2.0% 2.9 0.1
Bulimia Nervosa 7.7% 6.1% 0.1 0.7
Binge-eating disorder 4.6% 10.2% 1.8 0.2
Hypochondriasis 4.6% 0% 3.9 <.05*
Stereotypic movement disorder 3.5% (N = 85) 0% (N = 18) 1.2 0.3
Tourette's disorder 3.8% 2% 0.4 0.5
Tics 12.3% 6.1% 1.6 0.2
Kleptomania 4.6% 4.1% 0.0 0.9
Pyromania 0% 2.0% 2.6 0.1
Compulsive shopping 6.9% 4.1% 0.5 0.5
Hypersexual disorder 1.5% 0% 1.3 0.3
Intermittent explosive disorder 16.2% 6.1% 3.5 .06
OCPD 39.2% 13.3% 11.3 .001**
Avoidant personality disorder 21.2% (N = 99) 0.03% (N = 26) 2.9 0.9
Schizotypal personality disorder 5.3% (N = 94) 0% (N = 25) 2.4 0.1
Borderline personality disorder 22.3% (N = 94) 8% (N = 49) 3.0 0.1
  1. * p < .05 (2-tailed)
  2. ** p < .01 (2-tailed)