Table 1. Clinical and Demographic Characteristics of OCD Patients and Controls.
| Variable |
OCD (n=38) |
Controls (n=36) |
Analysis |
||
|---|---|---|---|---|---|
| Mean (SD) | U | Z | p-value | ||
| Age, years | 31.5 (10.2) | 27.8 (7.8) | 545.5 | −1.50 | 0.13 |
| Age of onset, yearsa | 13.1 (7.6) | NA | — | — | — |
| Illness duration, yearsa | 18.2 (10.4) | NA | — | — | — |
| Y-BOCS scores | |||||
| Obsessions | 12.2 (3.2) | NA | — | — | — |
| Compulsions | 12.9 (2.5) | NA | — | — | — |
| Total | 25.1 (5.2) | NA | — | — | — |
| DY-BOCS scoresb | |||||
| Aggressionc | 5.6 (4.6) | 0 (0) | 216.0 | −5.94 | <0.001 |
| Sexual/religiousd | 3.4 (4.8) | 0 (0) | 432.0 | −3.99 | <0.001 |
| Symmetrye | 7.6 (3.8) | 0.2 (0.5) | 85.0 | −6.83 | <0.001 |
| Contaminationf | 5.5 (5.1) | 0 (0) | 270.0 | −5.46 | <0.001 |
| Hoardingg | 3.2 (3.5) | 0.1 (0.4) | 323.0 | −4.76 | <0.001 |
| BDI | 17.3 (9.4) | 2.6 (2.7) | 75 | −6.61 | <0.001 |
| BAI | 17.1 (11.7) | 1.9 (1.6) | 64.5 | −6.72 | <0.001 |
|
N (%) |
χ2 |
df |
p-value |
||
| Gender, female | 23 (60.5) | 23 (63.9) | 0.09 | 1 | 0.77 |
| Caucasian | 34 (89.5) | 28 (77.8) | 1.10 | 1 | 0.29 |
| Socioeconomic status | |||||
| Classes a/b (higher) | 23 (60.5) | 25 (69.4) | 0.64 | 1 | 0.42 |
| Classes c/d/e (lower) | 15 (39.5) | 11 (30.6) | |||
| Level of educationh | |||||
| Higher | 14 (36.8) | 13 (36) | 0.32 | 2 | 0.85 |
| Middle | 22 (57.9) | 22 (61.1) | |||
| Lower | 2 (5.3) | 1 (2.8) | |||
| Right-handed | 37 (97.4) | 36 (100) | 0.96 | 1 | 0.33 |
| Presence of a symptom dimension (DY-BOCS) | |||||
| Aggressionc | 29 (76.3) | 1 (2.8) | 41.473 | 1 | <0.001 |
| Sexual/religiousd | 16 (42.1) | 0 (0) | 19.339 | 1 | <0.001 |
| Symmetrye | 34 (89.5) | 7 (19.4) | 36.693 | 1 | <0.001 |
| Contaminationf | 24 (63.2) | 2 (5.6) | 26.914 | 1 | <0.001 |
| Hoardingg | 21 (55.3) | 3 (8.3) | 18.580 | 1 | <0.001 |
Abbreviations: BAI, Beck Anxiety Inventory; BDI, Beck Depression Inventory; df, degree of freedom; DY-BOCS, Dimensional Yale–Brown Obsessive-Compulsive Scale; NA, not applicable; OCD, obsessive-compulsive disorder; U, Mann–Whitney U-test; Y-BOCS, Yale–Brown Obsessive-Compulsive Scale.
One data value is missing.
Scores vary from 0 to 15 for each dimension.
Obsessions about harm due to aggression/injury/violence/natural disasters, and related compulsions.
Obsessions concerning sexual/moral/religious obsessions, and related compulsions.
Obsessions about symmetry/‘just-right' perceptions, and compulsions to count or order/arrange.
Contamination obsessions and cleaning compulsions.
Obsessions and compulsions related to hoarding.
Higher: complete tertiary education; middle: incomplete tertiary and complete secondary education; incomplete secondary education.