Only a small number of participants (9%) reported having used a needle or syringe after someone else in the month preceding interview. Sharing needles and syringes was not associated with mean age at initiation to heroin injection or initial route of heroin administration. More participants who had recently initiated someone to injecting (i.e. preceding 12 months) reported sharing needles and syringes (17%) than those who had not recently initiated someone (8%), though the difference failed to reach significance (χ2 = 3.51, df = 1, p = .061).
