Assessing Seasonality of Travel Distance to Harm Reduction Service Providers among Persons Who Inject Drugs

Prior research has examined access to syringe exchange program (SEP) services among persons who inject drugs (PWID), but no research has been conducted to evaluate variations in SEP access based on season. This is an important gap in the literature given that seasonal weather patterns and inclement weather may affect SEP service utilization. The purpose of this research is to examine differences in access to SEPs by season among PWID in the District of Columbia (DC).

A geometric point distance estimation technique was applied to records from a DC SEP that operated from 1996 to 2011. We calculated the walking distance (via sidewalks) from the centroid point of zip code of home residence to the exchange site where PWID presented for services. Analysis of variance (ANOVA) was used to examine differences in walking distance measures by season. Differences in mean walking distance measures were statistically significant between winter and spring with PWID traveling approximately 2.88 and 2.77 miles, respectively, to access the SEP during these seasons.

The results of this study suggest that seasonal differences in SEP accessibility may exist between winter and spring. PWID may benefit from harm reduction providers adapting their SEP operations to provide a greater diversity of exchange locations during seasons in which inclement weather may negatively influence engagement with SEPs. Increasing the number of exchange locations based on season may help resolve unmet needs among injectors.

Table 3
Mean walking distance by season
Season	Exchanges used in distance calculations	Mean walking distance (miles)	Standard deviation	Range
Spring	8,478	2.88	2.07	11.4
Summer	8,694	2.85	1.99	11.4
Fall	9,273	2.83	1.94	11.4
Winter	7,514	2.77	1.98	11.9

Allen et al.

Allen et al. Harm Reduction Journal 2015 12:45   doi:10.1186/s12954-015-0081-y

Full article at: http://goo.gl/slBTyG

By: Sean T. Allen^1*, Monica S. Ruiz¹, Amira Roess¹ and Jeff Jones²

¹Department of Prevention and Community Health, Milken Institute School of Public Health at The George Washington University, 950 New Hampshire Ave, Suite 300, Washington 20052, DC, USA

²Department of Health Policy and Management, Jiann-Ping Hsu College of Public Health at Georgia Southern University, Statesboro 30460, GA, USA

  

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