Groups | Selection parameters | Total, n | Mutation Absent, n | Number of participants having mutation in β-globin gene, n | |
---|---|---|---|---|---|
Heterozygous | Homozygousa/compound heterozygousb | ||||
Group 1 | HbA2 < 2.2% Hb < 10 g/dl | 64 | 64 | 0 | 0 |
Group 2 | Hb A2: 3.3–3.5% (borderline suspected) | 25 | 24 | 01 | 0 |
Group 3 | HbA2 > 3.5% | 46 | 05 | 41 | 0 |
Group 4 | HbE: 25–40% | 165 | 0 | 163 | 2b |
Group 5 | HbE > 90% HbA = 0% | 08 | 0 | 0 | 8a |