Regional variation in the modeling of donation frequency: the case of Héma‐Québec, Canada

Marie‐Soleil Cloutier · Philippe Apparicio · Jean Dubé · Johanne Charbonneau · Gilles Delage

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Blood donation and transfusion practices Nonprofit Sector and Volunteering Organ Donation and Transplantation

Abstract

BACKGROUND: Many studies on factors that can affect the frequency of blood donation have shown the influence of several individual characteristics. However, few studies have analyzed regional variations in blood donation frequency. The objective of this article is to verify to what extent individual and geographic variables influence blood donation in the Province of Québec, Canada. STUDY DESIGN AND METHODS: This article used a database provided by Héma-Québec (the organization in charge of blood collection in Québec), which included 426,247 donors, who made 1.4 million donations over a period of 5 years. Using the donors' residential postal codes and those of the blood collection sites, we created two geographic variables: the distance between the donor's place of residence and his or her collection site and each donor's region of residence. We subsequently modeled the frequency of blood donation and the different donor categories (based on the number of blood donations) using both a negative binomial regression model and an ordinal logistic regression model. RESULTS: The results indicate that, once the individual characteristics have been taken into account, the geographic variables, including proximity to the collection site, have a significant impact on the frequency of blood donation. Likewise, according to the results of the negative binomial model, among the 17 regions in the Province of Québec, there are five regions where blood donation incidence rate ratios (IRRs) are very high, that is, Abitibi-Témiscamingue (IRR, 1.77; 95% confidence interval [CI], 1.61-1.95); Bas-Saint-Laurent (IRR, 1.75; 95% CI, 1.59-1.93); Saguenay-Lac-Saint-Jean (IRR, 1.68; 95% CI, 1.53-1.84); Centre-du-Québec (IRR, 1.66; 95% CI, 1.51-1.83); and Chaudière-Appalaches (IRR, 1.62; 95% CI, 1.48-1.78). CONCLUSION: Such knowledge of the geography of blood donations makes it possible to better target certain regions when planning new blood drives, to ensure a constant blood supply.

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References

1995Local Indicators of Spatial Association—LISA 2007Toward the next generation of research into small area effects on health: a synthesis of multilevel investigations published since July 1998 2009A Companion to Health and Medical Geography 2002Blood donors and factors impacting the blood donation decision 2000Embedded Altruism: Blood Collection Regimes and the European Union's Donor Population 2006Traditional and Health-Related Philanthropy: The Role of Resources and Personality 2007The blood donation experience: self‐reported motives and obstacles for donating blood 2006Convenience, the bane of our existence, and other barriers to donating

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