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. 2022 Aug 24;17(8):e0271926. doi: 10.1371/journal.pone.0271926

Table 2. Participant characteristics for Non-Drug, Psilocybin, LSD, Ayahuasca, and DMT groups1,2.

Non-Drug Psilocybin LSD Ayahuasca DMT
n = 933 n = 766 n = 904 n = 282 n = 307
Mean age at study participation in years (SD) 55.2 (13.5) 31.3 (12.2) a 30.5 (14.8) a 37.8 (11.6) b 30.6 (12.9) a
Mean age at time of experience in years (SD) 32.0 (16.4) 24.5 (9.1) a 21.7 (6.7) b 34.6 (11.0)c 26.6 (9.3) a
Sex (% male) 32% 80% a 80% a 63% b 82% a
Race (% White) 89% 86%a 84%a 83%a 83%a
Ethnicity (% Hispanic) 7% 9%a 11%a 13%a 9%a
Education (% Bachelor’s Degree or higher) 54% 42% a 38% a 62%b 41% a
Annual household income (% less than $50,000) 42% 54% a 52% a 47%b 57% a
Relationship Status (% never married) 16% 51% a 62% b 36% c 58% a,b
Country of Residence (% United States) 69% 62%a 68%a 40% b 63%a

1 Dichotomous demographic variables were analyzed with a general linear model with a logit link. Age was analyzed with ANOVA. Pairwise comparisons among groups were adjusted using Bonferroni method to control for Type I error.

2 Bold font = significant difference from the Non-Drug Group (p≤0.001); drug groups not sharing a common letter are significantly different (p≤0.001).