Methamphetamine injection, use disorder, receipt of substance use treatment and frequency of use, other substance use, and mental illness among adults ≥ 18 years old reporting past-year methamphetamine use in the United States, 2015–2018. Source: National Surveys on Drug Use and Health, 2015–2018; NSDUH uses 2010 Census–based population estimates. Receipt in past year among those with a methamphetamine use disorder; all other percentages are among adults reporting past-year methamphetamine use. Weighted percentages; bars represent 95% CI. *Among those with past-year methamphetamine use disorder. ±Past-month; all other variables are past-year. Adapted from Ref. 125.