Table 1.
Sample characteristics and treatment history by study condition.
| Variable | Ayahuasca group (n = 14) |
Placebo group (n = 15) |
|---|---|---|
| Age M (SD) | 39.71 (11.26) | 44.2 (11.98) |
| Sex-Female | 11 | 5 |
| Ethnicity | ||
| Black | 1 | 0 |
| Pardo | 4 | 7 |
| Caucasian | 9 | 8 |
| Education | ||
| Incomplete Primary Education | 5 | 4 |
| Completed Primary Education | 1 | 2 |
| Completed Secondary Education | 4 | 7 |
| Completed Undergraduate Education | 1 | 0 |
| Completed Postgraduate Education | 3 | 2 |
| Employment status | ||
| Employed-working | 3 | 3 |
| Employed-leave of absence | 2 | 4 |
| Unemployed | 7 | 8 |
| Student | 2 | 0 |
| Presence of personality disorder | 10 | 12 |
| Borderline personality disorder | 5 | 4 |
| Dependant personality disorder | 1 | 0 |
| Histrionic personality disorder | 4 | 7 |
| Narcissistic personality disorder | 1 | 0 |
| Schizoid personality disorder | 0 | 1 |
| Cluster B (undefined) | 1 | 0 |
| Depression duration (years) | ||
| Baseline MADRS-SI M (SD) | 3.36 (1.65) | 1.40 (1.68) |
| Lifetime suicide attempt | 10 | 6 |
| Number of failed antidepressant medications M (SD) | 3.93 (1.44) | 3.80 (1.90) |
| History of psychotherapy | 11 | 12 |
| History of electroconvulsive therapy | 1 | 1 |
| Inpatient during the intervention | 2 | 2 |
Cluster B personality disorders include antisocial personality disorder, borderline personality disorder, histrionic personality disorder, and narcissistic personality disorder.