Homozygous Heterozygous Completely healthy Not identified Total
TT*      52      89        38       13 192
SS**      49      98        37         2      186
ST      17      37        11         3      68
SO***       1      4        2         0        7
SS or ST       0      1 AS        0         0       1
TT or ST    1 TT      3 AS        0         0       4
SO or ST    1 ST      0        0         0        1
SC****       0      1        0         0       1
OT       0      0        1         0       1
Total     121      233        89        18       461
TT:thalassemia major;SS:sickle cell disease;SO:sickle cell disease and HbOarab association; SC:sickle cell disease and HbOarab association.
Table 1: Number of fetuses tested for the risk of hemoglobinopathies and prenatal diagnosis results