Table 2.
Clinical and demographic characteristics of patients with obsessive–compulsive disorder with and without sensory phenomena
| Group, mean ± SD or no. (%) | ||||
|---|---|---|---|---|
|
|
||||
| Characteristic | OCD with SP, n = 71 | OCD without SP, n = 35 | Statistic | p value |
| Age, yr | 32.11 ± 8.45 | 35.14 ± 10.84 | t104 = −1.56 | 0.12 |
| Age at onset of OCS, yr* | 16.79 ± 9.85 | 17.43 ± 6.49 | t103 = −0.35 | 0.73 |
| Illness duration, yr* | 15.26 ± 8.89 | 17.71 ± 12.61 | t103 = −1,16 | 0.25 |
| Y-BOCS | ||||
| Obsessions | 12.99 ± 3.38 | 13.03 ± 2.85 | t104 = −0.06 | 0.95 |
| Compulsions | 13.62 ± 3.02 | 13.11 ± 2.89 | t104 = 0.82 | 0.41 |
| Total score | 26.61 ± 5.99 | 26.17 ± 5.64 | t104 = 0.36 | 0.72 |
| Global DY-BOCS score† | 22.44 ± 4.49 | 22.21 ± 3.85 | t102 = 0.25 | 0.81 |
| DY-BOCS severity scores†‡ | ||||
| Aggression | 6.31 ± 5.40 | 7.15 ± 4.76 | t102 = −0.77 | 0.45 |
| Sexual/religious | 3.18 ± 5.21 | 4.73 ± 5.31 | t102 = −1.40 | 0.17 |
| Symmetry | 8.65 ± 5.06 | 4.21 ± 5.03 | t102 = 4.17 | < 0.001 |
| Contamination | 6.17 ± 5.88 | 6.70 ± 5.52 | t102 = −0.44 | 0.67 |
| Hoarding | 3.34 ± 4.23 | 2.06 ± 3.72 | t102 = 1.49 | 0.14 |
| Miscellaneous | 7.11 ± 5.78 | 7.12 ± 5.31 | t102 = −0.01 | 0.85 |
| Total severity of SP | 8.35 ± 3.46 | |||
| Female sex | 36 (50.7) | 20 (57.1) | χ21 = 0.39 | 0.53 |
| Years of education | χ22 = 1.09 | 0.58 | ||
| 9–13 | 42 (59.1) | 21 (60.0) | ||
| 14–18 | 23 (32.4) | 13 (37.1) | ||
| 19–24 | 6 (8.5) | 1 (2.9) | ||
| Right-handed | 65 (91.5) | 34 (97.1) | χ22 = 5.14 | 0.08 |
| Lifetime history of tics | 10 (14.1) | 8 (22.9) | χ21 = 1.28 | 0.28 |
| Lifetime history of depression | 31 (43.7) | 10 (28.6) | χ21 = 2.25 | 0.15 |
| Lifetime history of anxiety disorders | 28 (39.4) | 11 (31.4) | χ21 = 0.65 | 0.52 |
| Treatment-naive | 29 (40.8) | 11 (31.4) | χ21 = 0.89 | 0.39 |
| Subtypes of SP (lifetime) | ||||
| Physical sensations | 40 (56.3) | — | — | — |
| “Just right” perceptions | 60 (84.5) | — | — | — |
| Feeling of incompleteness | 31 (43.7) | — | — | — |
| Energy release | 17 (23.9) | — | — | — |
| “Urge-only” phenomena | 21 (29.6) | — | — | — |
DY-BOCS = Dimensional Yale–Brown Obsessive–Compulsive Scale; OCD = obsessive–compulsive disorder; OCS = obsessive–compulsive symptoms; SD = standard deviation; SP = sensory phenomena; USP-SPS = University of São Paulo Sensory Phenomena Scale; Y-BOCS, Yale–Brown Obsessive–Compulsive Scale.
*
One missing value.
†
Two missing values.
‡
See Table 1 footnote for a description of each symptom dimensions profile.