[Characteristics of attenders of low threshold syringe-exchange centers providing sterile syringes in Switzerland].
BACKGROUND
The objectives of the present study were to evaluate Aids prevention in drug users attending low threshold centres providing sterile injection equipment in Switzerland, to identify the characteristics of these users, and to monitor the progress of indicators of drug-related harm.


METHODS
This paper presents results from a cross-sectional survey carried out in 1994.


RESULTS
The mean age of attenders was 28 years, and women represented 27% of the sample. 75% of attenders used a combination of hard drugs (heroin and cocaine). Mean duration of heroin consumption was 8 years, and of cocaine 7 years; 76% of attenders had a fixed abode, but only 34% had stable employment; 45% were being treated with methadone; 9% had shared their injection material in the last 6 months; 24% always used condoms in the case of a stable relationship, and 71% in casual relationships. In a cluster analysis constructed on the basis of multiple correspondence analysis, two distinct profiles of users emerge: highly marginalised users with a high level of consumption (21%); irregular users, better integrated socially, of which the majority are under methadone treatment (79%).


CONCLUSIONS
Theses centres play a major role in Aids prevention. Nevertheless, efforts to improve the hygiene conditions of drug injection in Switzerland should be pursued and extended. At the same time, prevention of HIV sexual transmissions should be reinforced.
Benninghoff
F
F
Institut Universitaire de Médecine Sociale et Préventive, Unité d'Evaluation de Programmes de Prévention, Lausanne, Suisse.
Gervasoni
J P
JP
Spencer
B
B
Dubois-Arber
F
F
D000163:Acquired Immunodeficiency Syndrome / Q000150:complications / Q000517:prevention & control* / Q000635:transmission; D000328:Adult; D016000:Cluster Analysis; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D018671:Needle-Exchange Programs; D015397:Program Evaluation; D019966:Substance-Related Disorders / Q000150:complications*; D013557:Switzerland