Sociodemographic data as means (standard deviation) for age, years of education, employment and income and as frequencies for race, marital status and religion.

* = p** = p*** = p† = p†† = p††† = pAsterisks and crosses indicate p values for between group (ayahuasca vs. controls) Student’s t tests (age, education, employment and income) and χ2 tests (gender, race, marital status and religion) at baseline and at follow up for the Jungle and Urban samples. Aya. = Ayahuasca-using group; Comp. = comparison group.