Red Blood Cell Alloimmunization and Autoimmunization in Blood Transfusion-Dependent Sickle Cell Disease and β-Thalassemia Patients in Al-Ahsa Region, Saudi Arabia

Table 3

Blood groups of β-thalassemia and sickle cell disease patients in Al-Ahsa Region, Saudi Arabia.

Blood group	Number	%
A	65	15.4
A2	9	3
B	111	30.8
O	177	49
AB	9	3
RhD pos	327	88.1
RhD neg	47	12.8