ArticleBMJ open2023
Frequency and distribution of ABO and Rh blood group systems among blood donors at the Northern Zone Blood Transfusion Center in Kilimanjaro, Tanzania: a retrospective cross-sectional study.
Article in BMJ open, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.
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Who cites it
7 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Phenotypic and Allelic Frequencies of ABO and Rh(D) Blood Antigens in Ghana: A Systematic Review.Immunity, inflammation and disease · 2024Pooled it
- ABO Blood Types and Mortality in Patients Undergoing Hemodialysis.Kidney international reports · 2026Article
- Nationwide Distribution of ABO and Rh Blood Group Phenotypes Among Mexican Outpatients: A Multicenter Retrospective Cross-Sectional Study.Journal of blood medicine · 2026Article
- Article
- The Allelic and Phenotypic Frequencies of the ABO and Rh Blood Types in Pregnant Women in Addis Ababa, Ethiopia.BioMed research international · 2025Article
- Frequency of ABO and Rh Blood Groups Among Blood Donors in the Hail Region of Saudi Arabia.Cureus · 2024Article
- ABO and Rh (D) blood group phenotype distribution pattern among blood donors at the Nekemte Blood Bank, Oromia, West Ethiopia: a retrospective cross-sectional study.The Journal of international medical research · 2024Article
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6 authors.
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Abstract
objectivesABO and Rh blood group systems are the major factors affecting the blood transfusion safety. The frequency and distribution of these blood group systems vary worldwide. We aimed to determine the frequency and distribution of ABO and Rh blood group systems among first-time blood donors at the Northern Zone Blood Transfusion Center in Kilimanjaro, Tanzania.
designCross-sectional descriptive population-based study.
settingData on ABO and Rh blood group systems were obtained and analysed from the Northern Zone Blood Transfusion Center among first-time blood donors.
participantsThere were 65 535 first-time blood donors aged 15-55 years who donated at the Northern Zone Blood Transfusion Center from January 2017 to December 2019. OUTCOME MEASURES: The percentage of ABO and Rh blood group systems among different categories of blood donors was calculated.
resultsRetrospective data from Blood Establishment Computer System of 65 535 first-time blood donors were analysed in the present study. The mean age of the blood donors was 30.6±11.2 years (range: 15-55 years). The vast majority of the blood donors 84.2% (n=55 210) were men. Also, the majority 69.6% (n=45 595) were aged ≥35 years. Blood group O was the most common blood group which was found in over half 52.4% (n=34 333) of the blood donors and majority 95.3% (n=62 461) of the donors were Rh positive. Moreover, the majority 78.3% (n=51 336) were voluntary donors and the remaining 21.7% (n=14 199) were replacement donors.
conclusionMajority of the donors had blood group O and also the vast majority of the donors were Rh positive. Considering the large size of our study population, this has provided a more comprehensive information regarding the frequency and patterns of ABO and Rh blood group systems in Tanzania. The observed association of blood group A with one of the regions from which donors were coming from, is intriguing and further studies may confirm possible related genetic evolution.
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