Observational cross sectional study on blood donors.

Objective This study was conducted to document the frequency ABO & rhesus blood groups in potential male blood donor belong to south area of Karnataka. Design: Observational cross sectional study. Settings: Blood transfusion center at Davangere, Karnataka. Methods The data of blood donors from July 2009 to December 2009. Results Total number of donors studied was 3, 048. The commonest blood group was O present in 37. 87% followed by B in 29. 98%,A in 23. 88% and AB in 8. 29%. While 95. 41% donors were Rh positive and 4. 59% was Rh negative. The maximum donors were between in age group 20-39 years. The maximum prevalence of hemoglobin % ranges from 13. 0-13. 9 about 2, 983(75. 11%). The maximum prevalence of weight among the donors was between 60 to 69 kg about 1, 201(39. 40%) and the least weight appears between 80 to 90 kg about 254(8. 4%). Conclusion Blood group O is the commonest ABO blood group and 95. 41% are Rh + in this area,the maximum prevalence of donors in age group, Hb% and Weight are 20. 39 years, 13. 0-13. 5 gm% and 50-69 kg respectively. [ABSTRACT FROM AUTHOR]