Association between use of LSD, psilocybin, mescaline, and peyote and mental health.

aAdjusted for age, gender, race/ethnicity, income, education, married, risky behavior, extremely stressful event, and ten types of lifetime drug use (cannabis/marijuana, opiates, cocaine, sedatives/tranquilizers, stimulants, MDMA/ecstasy, inhaled anesthetics, amyl nitrates, other inhalants, PCP).bAdjusted for above variables plus nine types of past year drug use (cannabis/marijuana, opiates, cocaine, sedatives/tranquilizers, stimulants, MDMA/ecstasy, inhalants, PCP).cData on symptoms of non-affective psychosis available only for years 2001–2002.Bold indicates p