- Illicit drugs: Crime statistics are often better indicators of prevalence of law enforcement and willingness to report crime, than actual prevalence.
- Violent crime > Intentional homicide rate: Homicides per 100’000 residents. Homicide is the death of a person purposefully inflicted by another person (it excludes suicides) outside of a state of war. Homicide is a broader category than murder, as it also includes manslaughter. The exact legal definition varies across countries, some of which include infanticide, assisted suicide, euthanasia and deaths caused by dangerous driving.
SOURCES: CIA World Factbooks 18 December 2003 to 28 March 2011; Wikipedia: List of countries by intentional homicide rate by decade