Table 1.

Definitions of terms used in the RADARS System Web Monitoring Program.

Term	Definition
Abuse	“A mention that indicates the use of a drug to gain a high, euphoric effect or some other psychotropic effect.”
Addiction	“A mention that indicates one or more of the following: 1) psychological or physical dependence on a drug; 2) tolerance to the psychotropic effects of a drug; 3) withdrawal effects when discontinuing use of a drug.”
Death	“A mention that indicates a death has occurred due to a drug of interest.”
Mention	“Any occasion of a reference to a drug or drug class that appears in a post. One post may contain multiple mentions.”
Misuse	“A mention that indicates the improper or incorrect use of a drug for reason other than the pursuit of a psychotropic effect.”
Overdose	“A mention that indicates the accidental or intentional overdose of a drug, using a dangerous amount of a drug (i.e. a quantity greater than recommended or generally prescribed), or use which may result in a medical intervention.”
Post	“A single point of communication entered by one individual at one specific time point.”