On how many occasions (if any) have you used prescription stimulants, such as Ritalin, Adderall, or Concerta, not prescribed for you by a doctor during the past 30 days?
Year : | KDOC-JS ■ | State: ■ |
2016 | — | 1.37 |
2017 | — | 1.29 |
2018 | — | 1.40 |
2019 | — | 1.38 |
2020 | — | 1.48 |