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Prevalence and Correlates of the Use of Prefilled Syringes Among Persons Who Inject Drugs in San Diego, CA

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Abstract

Persons who inject drugs (PWID) are at increased risk for blood-borne virus (BBV) infections and overdose resulting from high-risk injecting practices. Studies of prefilled syringe use ([PFSU] using a syringe that already contained drug solution when it was obtained by the user), an injection practice previously described in Eastern Europe, suggest that it increases susceptibility to BBV. However, little is known about this practice in the USA. Data were obtained from an ongoing cohort study of PWID to determine the prevalence and assess correlates of PFSU in San Diego, CA. Baseline interviews assessed socio-demographics and drug use behaviors. Logistic regression was used to identify factors independently associated with ever using a prefilled syringe (yes/no). Participants (n = 574) were predominately males (73.9 %) and white (50.9 %) with a mean age of 43.4 years (range 18–80); 33.3 % reported ever using prefilled syringes, although only 4.9 % reported use in the past 6 months. In multivariable analyses, PFSU was independently associated with ever having a rushed injection due to police presence [adjusted odds ratio (AOR) = 2.51, 95 % CI 1.66, 3.79], ever being in prison (AOR = 1.80, 95 % CI 1.23, 2.63), injecting most often in public versus private places in the past 6 months (AOR = 1.66, 95 % CI 1.11, 2.48), and injecting drugs in Mexico (AOR = 1.70, 95 % CI 1.16, 2.49). Results indicate that a history of PFSU is common and associated with environmental factors that may also increase risk for adverse health outcomes. Studies are needed to better understand PFSU in order to develop interventions to prevent adverse outcomes associated with their use.

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Acknowledgments

This study was funded by the National Institutes of Drug Abuse (NIDA): R01 DA031074 (PI: Garfein). RFA received support from NIDA diversity supplement R01 DA031074-01S1 and NIDA T32 DA 023356. AMR received funding from NIDA T32 DA 023356, KDW received support from NIDA K01DA031031, FAM received support from NIDA R01 DA031074-03S1, and SAS received support from NIDA R37 DA019829. NIDA had no role in the study design, data collection, data analysis, or interpretation of the results.

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Correspondence to Richard S. Garfein.

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Armenta, R.F., Roth, A.M., Wagner, K.D. et al. Prevalence and Correlates of the Use of Prefilled Syringes Among Persons Who Inject Drugs in San Diego, CA. J Urban Health 92, 1081–1091 (2015). https://doi.org/10.1007/s11524-015-9988-6

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