Table 1.
Demographic Characteristics for the Samples
| Characteristic | Healthy Controls | PTSDa | Panic Disorder | MDDb |
|---|---|---|---|---|
| N | 96 | 17 | 21 | 13 |
| Sex (%, n female)c | 49.0 (47) | 81.3 (13) | 47.6 (11) | 30.8 (4) |
| Age (mean, sd)d | 29.6 (10.3) | 39.5 (11.4) | 32.5 (7.9) | 41.2 (10.6) |
| Race | ||||
| Caucasian, % (n) | 86.5 (83) | 87.5 (15) | 90.5 (19) | 84.6 (11) |
| African-American, % (n) | 7.3 (7) | 12.5 (2) | 4.8 (1) | 15.4 (2) |
| Asian, % (n) | 4.2 (4) | 0 (0) | 4.8 (1) | 0 (0) |
| Other, % (n) | 1.0 (1) | 0 (0) | 0 (0) | 0 (0) |
| Hispanic Ethnicity, % (n) | 3.2 (3) | 6.3 (1) | 4.8 (1) | 0 (0) |
| Comorbid Diagnoses, % (n) | ||||
| MDD | - | 21.0 (4) | 19.0 (4) | - |
| Dysthymia | - | 0 (0) | 4.8 (1) | 0 (0) |
| GADe | - | 6.3 (1) | 33.3 (7) | 15.4 (2) |
| OCDf | - | 0 (0) | 4.8 (1) | 7.7 (1) |
| Social phobia | - | 6.3 (1) | 14.3 (3) | 7.7 (1) |
| Panic Disorder | - | 12.5 (2) | - | 0 (0) |
| PTSD | - | - | 0 (0) | 0 (0) |
| Specific phobia | - | 0 (0) | 14.3 (3) | 7.7 (1) |
| Agoraphobia without panic disorder | - | 0 (0) | 0 (0) | 7.7 (1) |
a
PTSD: Posttraumatic Stress Disorder
b
MDD: Major Depressive Disorder
c
p < .05 for the difference between the HC sample vs. PTSD and MDD
d
p < .05 for the chi-square test of sex distribution
e
GAD: Generalized Anxiety Disorder
f
OCD: Obsessive Compulsive Disorder