Table 4.
Mean scores and within-group effect sizes (Cohen’s d) for suicidality (MADRS-SI) and non-suicide-related depressive symptoms (MADRS-totalnonSI).
| Baseline | Day 1 | Day 2 | Day 7 | |||||
|---|---|---|---|---|---|---|---|---|
| Aya | Pla | Aya | Pla | Aya | Pla | Aya | Pla | |
| n | 14 | 15 | 14 | 13 | 13 | 14 | 14 | 15 |
| MADRS-SI | ||||||||
| Mean | 3.36 | 1.40 | 1.14 | 1.00 | 0.69 | 0.57 | 1.00 | 1.33 |
| SD | 1.65 | 1.68 | 1.41 | 1.35 | 1.32 | 0.94 | 1.66 | 1.63 |
| Cohen's d | – | – | 1.33 | 0.00 | 1.42 | 0.64 | 1.19 | 0.04 |
| 95% CI | – | – | 1.25–3.18 | –1.09–1.63 | 1.50–3.74 | 0.06–1.23 | 1.21–3.50 | –0.90–1.04 |
| MADRS-total nonSI | ||||||||
| Mean | 32.79 | 28.73 | 15.57 | 15.00 | 13.54 | 13.86 | 14.64 | 22.20 |
| SD | 4.93 | 5.08 | 12.68 | 11.16 | 10.07 | 10.04 | 8.64 | 9.87 |
| Cohen's d | – | – | 1.46 | 1.61 | 2.17 | 1.57 | 2.20 | 0.91 |
| 95% CI | – | – | 10.42–24.02 | 8.06–17.78 | 14.03–24.89 | 8.94–19.35 | 13.38–22.92 | 2.55–0.51 |
Aya, ayahuasca; Pla, placebo.