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Table 1 Ethnoracial makeup of psychedelic medicine studies

From: Inclusion of people of color in psychedelic-assisted psychotherapy: a review of the literature

Study

Psychedelic

Country

N

White

Black

Latino

Asian

Indigenous

Mixed

Other

Unknown

Osorio et al., 2015

Ayahuasca

Brazil

6

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

6(100.0%)

Palhano-Fontes et al., 2017

Ayahuasca

Brazil

29

17 (58.6%)

1 (3.4%)

0(0.0%)

0(0.0%)

0(0.0%)

11 (37.9%)

0(0.0%)

0(0.0%)

Sanches et al., 2016

Ayahuasca

Brazil

17

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

17 (100.0%)

Thomas et al., 2013

Ayahuasca

Canada

12

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

12 (100.0%)

0(0.0%)

0(0.0%)

0(0.0%)

Brown & Alper, 2017

Ibogaine

Mexico

30

27 (90.0%)

0(0.0%)

1 (3.3%)

0(0.0%)

0(0.0%)

0(0.0%)

2 (6.7%)

0(0.0%)

Noller, Frampton & Yazar-Klosinski, 2016

Ibogaine

New Zealand

14

14 (100.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

Bouso et al., 2008

MDMA

Spain

6

6(100.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

Gasser et al., 2014

LSD

Switzerland

11

11 (100.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

Oehen et al., 2013

MDMA

Switzerland

14

12 (85.7%)

0(0.0%)

0(0.0%)

1 (7.1%)

0(0.0%)

1 (7.1%)

0(0.0%)

0(0.0%)

Carhart-Harris et al., 2016

Psilocybin

UK

12

9 (75.0%)

2 (16.7%)

1 (8.3%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

Carhart-Harris et al., 2018

Psilocybin

UK

8

6 (75.0%)

1 (12.5%)

0(0.0%)

1 (12.5%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

Mithoefer et al., 2010

MDMA

USA

20

20 (100.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

Bogenschutz et al., 2015

Psilocybin

USA

10

3 (30.0%)

1 (10.0%)

4 (40.0%)

0(0.0%)

1 (10.0%)

0(0.0%)

0(0.0%)

0(0.0%)

Griffiths et al., 2016

Psilocybin

USA

51

48 (94.1%)

2 (3.9%)

0(0.0%)

1 (2.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

Grob et al., 2011

Psilocybin

USA

12

11 (91.7%)

0(0.0%)

0(0.0%)

1 (8.3%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

Johnson et al., 2014

Psilocybin

USA

15

14 (93.3%)

0(0.0%)

0(0.0%)

1 (6.7%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

Moreno et al., 2006

Psilocybin

USA

9

8 (88.9%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

1 (11.1%)

0(0.0%)

0(0.0%)

Ross et al., 2016

Psilocybin

USA

29

26 (89.7%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

3 (10.3%)

0(0.0%)

N = 18

 

Total

282.0

232 (82.3%)

7 (2.5%)

6 (2.1%)

5 (1.8%)

13 (4.6%)

13 (4.6%)

5 (1.8%)

23 (8.2%)

 

Minimum

6.0

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

 

25th %tile

10.8

7.5 (75.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

 

Median

13.0

11.5 (89.7%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

 

Average

17.6

14.5 (74.8%)

0.4 (2.7%)

0.4 (3.0%)

0.3 (2.2%)

0.8 (6.5%)

0.8 (3.3%)

0.3 (1.0%)

1.3 (11.1%)

 

75th %tile

22.3

17.75 (94.1%)

1 (3.4%)

0(0.0%)

1 (2.0%)

0(0.0%)

0(0.0%)

0(0.0%)

0(0.0%)

 

Maximum

51.0

48 (100.0%)

2 (16.7%)

4 (40.0%)

1 (12.5%)

12 (100.0%)

11 (37.9%)

3 (10.3%)

17 (100.0%)

  1. Notes
  2. Data are sorted descending alphabetically, first by country, then by psychedelic substance, and finally by study
  3. Ethnicity reported as “Unknown” for studies in which investigators did not collect self-report data on participant ethnicity. These studies are only excluded from total calculations
  4. Oehen et al. 2013 includes two participants that ultimately dropped out of the study
  5. Moreno et al. 2006 reported 1 participants as ‘Mixed Other,’ categorized above as Mlixed
  6. Indigenous: Native American (USA), First Nation (Canada), Aboriginal (New Zealand)
  7. Mixed: Pardo (Brazil)
  8. Carhart-Harris et al. 2018 only includes participants not included in Carhart-Harris et al. 2018