Substance use

During the past two weeks, about how often did you use any of the following medicines on your own, that is, without a doctor’s prescription, in greater amounts
or longer than prescribed?

Adopted from Diagnostic and Statistical Manual of Mental Disorders, 5th Edition
Painkillers (like Vicodin)
Stimulants (like Ritalin, Adderall)
Sedatives or tranquilizers (like sleeping pills or Valium)
Marijuana
Cocaine or crack
Club drugs (like ecstasy)
Heroin
Inhalants or solvents (like glue)
Methamphetamine (like speed)