Table 1.
Baseline Demographic and Behavioral Variables in Active tcVNS and Sham Stimulation Groups
| tcVNS (n=9) | Sham (n=10) | |
|---|---|---|
| Age | ||
| Mean ± SD | 37 ± 13 | 40 ± 14 |
| Race | ||
| White | 5 (55%) | 5 (45%) |
| Black | 4 (45%) | 5 (45%) |
| Asian/Pacific Islander | 0 (0%) | 1 (9%) |
| Sex | ||
| Female | 6 (66%) | 7 (64%) |
| Male | 3 (33%) | 4 (36%) |
| BMI | ||
| Mean ± SD | 30 ± 7 | 30 ± 6 |
| Education Level | ||
| Some high school | 1 (11%) | 1 (9%) |
| High school graduate | 3 (33%) | 1 (9%) |
| Some college | 2 (22%) | 2 (18%) |
| College graduate | 3 (33%) | 7 (64%) |
| Marital Status | ||
| Never married | 3 (33%) | 5 (45%) |
| Married | 3 (33%) | 2 (18%) |
| Divorced / Separated | 2 (22%) | 3 (27%) |
| Widowed | 1 (11%) | 1 (9%) |
| PTSD Score (PCL) | ||
| Mean ± SD | 62 ± 14 | 61 ± 13 |
| CAPS Score | ||
| Intrusions-Mean ± SD | 11 ± 2 | 10 ± 3 |
| Avoidance-Mean ± SD | 5 ± 2 | 5 ± 1 |
| Negative Cognitions-Mean ± SD | 17 ± 4 | 14 ± 4 |
| Hyperarousal-Mean ± SD | 11 ± 3 | 10 ± 3 |
| Total-Mean ± SD | 44 ± 9 | 38 ± 9 |
| Ham-D Score | ||
| Mean ± SD | 19 ± 12 | 19 ± 5 |
| Ham-A Score | ||
| Mean ± SD | 23 ± 11 | 20 ± 6 |
tcVNS=transcutaneous Vagal Nerve Stimulation; sham=sham stimulation; BMI=body mass index; PCL=PTSD Checklist; CAPS=Clinician Administered PTSD Scale; Ham-D=Hamilton Depression Scale; Ham-A=Hamilton Anxiety Scale