Table 1.
Participant demographics (safety population).
| Parameter | Psilocybin 25 mg (N = 30) |
Psilocybin 10 mg (N = 30) |
Placebo (N = 29) |
Overall (N = 89) |
|---|---|---|---|---|
| Gender, n (%) | ||||
| Male | 16 (53.3) | 16 (53.3) | 16 (55.2) | 48 (53.9) |
| Female | 14 (46.7) | 14 (46.7) | 13 (44.8) | 41 (46.1) |
| Race, n (%) | ||||
| White | 25 (83.3) | 27 (90.0) | 20 (69.0) | 72 (80.9) |
| Black | 0 | 0 | 1 (3.4) | 1 (1.1) |
| Asian | 2 (6.7) | 1 (3.3) | 3 (10.3) | 6 (6.7) |
| Mixed | 2 (6.7) | 1 (3.3) | 1 (3.4) | 4 (4.5) |
| Other | 1 (3.3) | 1 (3.3) | 4 (13.8) | 6 (6.7) |
| Age at time of consent, years | ||||
| Mean (SD) | 36.6 (10.29) | 36.1 (9.25) | 35.6 (7.69) | 36.1 (9.06) |
| BMI, kg/m2 | ||||
| Mean (SD) | 22.9 (3.75) | 23.0 (2.90) | 23.7 (3.20) | 23.2 (3.29) |
| Educational level, n (%) | ||||
| No formal qualifications | 0 | 0 | 0 | 0 |
| GCSE/GCE/O level | 0 | 0 | 0 | 0 |
| A level/NVQ | 2 (6.7) | 1 (3.3) | 0 | 3 (3.4) |
| Undergraduate/higher national diploma | 9 (30.0) | 11 (36.7) | 10 (34.5) | 30 (33.7) |
| Master’s or postgraduate diploma | 16 (53.3) | 16 (53.3) | 15 (51.7) | 47 (52.8) |
| PhD | 3 (10.0) | 2 (6.7) | 4 (13.8) | 9 (10.1) |
| Prior psilocybin experience, n (%) | ||||
| Yes | 11 (36.7) | 15 (50.0) | 7 (24.1) | 33 (37.1) |
| No | 19 (63.3) | 15 (50.0) | 22 (75.9) | 56 (62.9) |
BMI: body mass index; GC(S)E: general certificate of (secondary) education; NVQ: national vocational qualification.