Table 3.
Multivariable model of factors associated with HIV infection, Zanzibar, Tanzania, 2007 and 2012
| ORa | 95 % CI | p value | |
|---|---|---|---|
| 2007 | |||
| Duration injecting drugs >5 years | 1.00 | 1.00 | 1.00 |
| Duration injecting drugs ≤5 years | 2.46 | 0.96–6.32 | 0.06 |
| No condom at last sex with paid | 1.00 | 1.00 | 1.00 |
| partner | |||
| Used a condom at last sex with paid | 1.92 | 1.04–3.54 | 0.04 |
| partner | |||
| 2012 | |||
| Duration injecting drugs >5 years | 1.00 | 1.00 | 1.00 |
| Duration injecting drugs ≤5 years | 5.43 | 2.53–11.64 | <0.01 |
| Never shared a needle | 1.00 | 1.00 | 1.00 |
| Shared a needle | 3.37 | 1.65–6.89 | <0.01 |
CI confidence interval, OR odds ratio
a
OR adjusted odds ratio are adjusted for variables in the table, the adjustments are for the 2007 and 2012 samples independently