Injecting and sexual risk-taking behaviour among regular amphetamine users.

A sample of 301 regular amphetamine users were interviewed regarding injecting and sexual risk-taking behaviours. Two-thirds of subjects were injecting the drug, with males being 1.8 times more likely to do so. Nearly half (41%) of injectors had shared injecting equipment in the preceding month. Females were twice as likely as males to report recent needle sharing. Having a regular sexual partner who injects amphetamines, using benzodiazepines and experiencing higher levels of psychopathology were independently associated with needle sharing. The number of sexual partners in the preceding six months was independently associated with having had paid sex in that period, and higher levels of polydrug use.