Table 3.
Associations between primary syringe source and injection sharing practices: New England (NH, VT, MA), 2018–2019
| Primary syringe source (Past 30 days) | Borrowed used syringes (past 30 days) | Borrowed used injection equipment (past 30 days) | Backloading (past 30 days) | |||
|---|---|---|---|---|---|---|
| Crude PR (95% CI) | Adjusted PRa,b (95% CI) | Crude PR (95% CI) | Adjusted PRa,c (95% CI) | Crude PR (95% CI) | Adjusted PRa,d (95% CI) | |
| Direct SSP | 0.62 (0.44–0.86) | 0.60 (0.43–0.85) | 0.63 (0.54–0.73) | 0.59 (0.50–0.69) | 0.62 (0.48–0.81) | 0.65 (0.48–0.88) |
| Pharmacy | 0.70 (0.49–1.01) | 0.70 (0.52–0.93) | 0.86 (0.69–1.07) | 0.81 (0.68–0.98) | 0.74 (0.60–0.90) | 0.78 (0.67–0.91) |
| Indirect SSP | 0.89 (0.60–1.31) | 0.89 (0.62–1.28) | 0.96 (0.70–1.32) | 0.91 (0.64–1.27) | 0.92 (0.69–1.23) | 0.92 (0.72–1.17) |
| Other source | Reference | Reference | Reference | Reference | Reference | Reference |
PR prevalence ratio; CI confidence interval
aAdjusted for age, gender, race, sexual orientation, incarceration, homelessness, years injecting, injection frequency, inject multiple times per sitting, inject heroin, inject cocaine, inject meth, inject speedball/screwball, ever received medication for opioid use disorder
bn = 372
cn = 373
dn = 375