Willingness to Participate in Hypothetical HIV Vaccine Trial and Associated Factors among People Who Inject Drugs in Dar es Salaam, Tanzania

Table 2

Risk behaviours of respondents.

Behaviour	Number (%),
Age at onset of injecting drugs (, ) years
Shared needle/syringes
Yes	146 (37.9)
No or do not remember	240 (62.1)
Number of people shared needle/syringes
One or two	86 (58.9)
Three or more	60 (41.1)
Frequency of needle or syringe sharing with other people
One or two times	46 (31.0)
Three times or above	100 (69.0)
Types of agents used to clean needle/syringe before sharing
Coldwater	109 (83.2)
Others^d	22 (16.8)
Number of sexual partners
One or two	49 (12.7)
Three or more	337 (87.3)
Had sexual intercourse with nonregular partner in the last 6 months
Yes	184 (47.7)
No or do not remember	202 (52.3)
Used condom with nonregular partners in the last intercourse
Yes	89 (48.6)
No or do not remember	94 (51.4)
Partner injecting drugs
Yes	63 (31.7)
No	136 (68.3)
Exchanged sex for money, drugs, or other services
Yes	166 (43.0)
No	220 (57.0)

SD: standard deviation. ^dJik, hot water, spirit, and dry cloth.