Prevalence of Past-Month Drug Use
"The findings on drug use are based on reported use during the last 30 days. Nationwide, 10 per cent had used heroin during the past month, 32 per cent had used cannabis and 40 per cent had used benzodiazepine substances. Fifteen per cent had used stimulants, primarily amphetamine. The situation was also measured by calculating the overall score for frequency of drug use and the severity of ongoing use during the past month. Forty per cent had not used such substances at all, and eighteen per cent only sporadically. All the findings are practically unchanged compared with recent years (SERAF, 2012)."
Norwegian Institute for Alcohol and Drug Research, "The Drug Situation in Norway 2012: annual report to the European Monitoring Centre for Drugs and Drug Addiction (EMCDDA)," (Oslo, Norway: December 2012), p. 31.