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Oliveira CD, de Almeida-Neto C, Liu EJ, et al. Temporal distribution of blood donations in three Brazilian blood centers and its repercussion on the blood supply. Rev Bras Hematol Hemoter. 2013;35(4):246-51doi: 10.5581/1516-8484.20130071.
Oliveira, C. D., de Almeida-Neto, C., Liu, E. J., Sabino, E. C., Leão, S. C., Loureiro, P., Wright, D., Custer, B., Gonçalez, T. T., Capuani, L., Busch, M., & Proietti, A. B. (2013). Temporal distribution of blood donations in three Brazilian blood centers and its repercussion on the blood supply. Revista brasileira de hematologia e hemoterapia, 35(4), 246-51. https://doi.org/10.5581/1516-8484.20130071
Oliveira, Claudia Di Lorenzo, et al. "Temporal distribution of blood donations in three Brazilian blood centers and its repercussion on the blood supply." Revista brasileira de hematologia e hemoterapia vol. 35,4 (2013): 246-51. doi: https://doi.org/10.5581/1516-8484.20130071
Oliveira CD, de Almeida-Neto C, Liu EJ, Sabino EC, Leão SC, Loureiro P, Wright D, Custer B, Gonçalez TT, Capuani L, Busch M, Proietti AB. Temporal distribution of blood donations in three Brazilian blood centers and its repercussion on the blood supply. Rev Bras Hematol Hemoter. 2013;35(4):246-51. doi: 10.5581/1516-8484.20130071. PMID: 24106441; PMCID: PMC3789428.
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Rev Bras Hematol Hemoter. 2013;35(4):246-51. doi: 10.5581/1516-8484.20130071.

Temporal distribution of blood donations in three Brazilian blood centers and its repercussion on the blood supply.

Revista brasileira de hematologia e hemoterapia

Claudia Di Lorenzo Oliveira, Cesar de Almeida-Neto, Emily Jing Liu, Ester Cerdeira Sabino, Silvana Carneiro Leão, Paula Loureiro, David Wright, Brian Custer, Thelma Therezinha Gonçalez, Ligia Capuani, Michael Busch, Anna Bárbara de Freitas Carneiro Proietti

Affiliations

  1. Universidade Federal de São João del-Rei - UFSJ, São João del-Rei, MG, Brazil.

PMID: 24106441 PMCID: PMC3789428 DOI: 10.5581/1516-8484.20130071

Abstract

BACKGROUND: Seasonal distribution of blood donation hinders efforts to provide a safe and adequate blood supply leading to chronic and persistent shortages. This study examined whether holidays, geographical area and donation type (community versus replacement) has any impact on the fluctuation of donations.

METHODS: The numbers of blood donations from 2007 through 2010 in three Brazilian Retrovirus Epidemiological Donor Study II (REDS-II) participating centers were analyzed according to the week of donation. The weeks were classified as holiday or non-holiday. To compare donations performed during holiday versus non-holiday weeks, tabulations and descriptive statistics for weekly donations by blood center were examined and time series analysis was conducted.

RESULTS: The average weekly number of donations varied according to the blood center and type of week. The average number of donations decreased significantly during Carnival and Christmas and increased during the Brazilian National Donor Week. The fluctuation was more pronounced in Recife and Belo Horizonte when compared to São Paulo and higher among community donors.

CONCLUSION: National bank holidays affect the blood supply by reducing available blood donations. Blood banks should take into account these oscillations in order to plan local campaigns, aiming at maintaining the blood supply at acceptable levels.

Keywords: Blood banks; Blood donors; Brazil; Holidays; Temporal distribution; Time factors

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