Table 4.
Comparison of lifetime psychiatric conditions, lifetime body-focused repetitive behaviors, and family history in early and late onset pathological skin picking
| Age of Onset 30=< n=651 | Age of Onset 30> n=50 | Statistic | df | p-value | |
|---|---|---|---|---|---|
| Psychiatric Comorbidity | |||||
| Depressive Disorder | 51.1% | 78.7% | 12.312 | 1 | <.001 |
| Bipolar Disorder | 7.1% | 6.4% | NA3 | NA | >.999 |
| Generalized Anxiety Disorder | 30.0% | 51.1% | 8.032 | 1 | .005 |
| Panic Disorder | 8.4% | 19.1% | NA3 | NA | .030 |
| Specific Phobia | 3.6% | 6.4% | NA3 | NA | .414 |
| Social Phobia | 11.9% | 21.3% | 2.722 | 1 | .099 |
| Posttraumatic Stress Disorder | 10.5% | 23.4% | 5.902 | 1 | .015 |
| Obsessive-Compulsive Disorder | 24.5% | 19.1% | 0.432 | 1 | .512 |
| Tourette’s/Tic Disorder | 1.0% | 0.0% | NA3 | NA | >.999 |
| Anorexia Nervosa | 4.0% | 4.3% | NA3 | NA | .710 |
| Bulimia Nervosa | 5.3% | 2.1% | NA3 | NA | .502 |
| Alcohol Abuse/Dependence | 2.6% | 4.3% | NA3 | NA | .376 |
| Drug Abuse/ Dependence | 3.1% | 2.1% | NA3 | NA | 1.000 |
| ADHD | 13.0% | 10.6% | 0.062 | 1 | .808 |
| BDD | 5.6% | 8.5% | NA3 | NA | .342 |
| Trichotillomania | 24.5% | 23.4% | 0.002 | 1 | >.999 |
| At Least 1 Diagnosis | 58.8% | 78.0% | 6.342 | 1 | .012 |
| BFRB Comorbidity | |||||
| Nose Picking | 38.2% | 22.9% | 3.852 | 1 | .050 |
| Nail Biting | 51.9% | 41.7% | 1.472 | 1 | .226 |
| Cheek/lip Biting | 47.4% | 36.2% | 1.802 | 1 | .180 |
| Hair Pulling | 47.7% | 41.3% | 0.472 | 1 | .495 |
| Total Number of BFRBs | 1.71 (1.30) | 1.2 (1.04) | 3.131 | 54.61 | .003 |
| At least 1 BFRB | 84.0% | 79.2% | 0.452 | 1 | .503 |
| Family History | |||||
| Family History of ExD | 46.9% | 32.0% | 3.552 | 1 | .060 |
Note.
1
Student t-test (2-sided)
2
Chi square test (2-sided)
3
Fisher’s Exact Test (2-sided).
Significant findings are bolded. BFRB=Body-focused repetitive behavior.