Most respondents were men 73.4%, born in Spain 84.9%, and without regular employment 69.2%; their mean age was 25.8 years 95% CI 25.5-26.1 and mean duration of injecting drug use was 6.5 years 95% CI 6.0-6.91.
La mayoría eran hombres 73,4%, nacidos en España 84,9%, sin trabajo regular 69,2%, con una media de edad de 25,8 años intervalo de confianza [IC] del 95%, 25,5-26,1 y un tiempo medio de consumo inyectado de 6,5 años IC del 95%, 6,0-6,91.