- Prevalence rates for sickle cell disease, sickle cell trait, ß-thalassemia major and ß-thalassemia minor over time in Southern Region, Saudi Arabia from November 2017 to October 2020.
| Hemoglobin abnormality | Number of positive tests per year | ||
|---|---|---|---|
| November 2017 - October 2018 (n=9701) | November 2018 - October 2019 (n=13950) | November 2019 - October 2020 (n=8481) | |
| Positive test n (%) | Positive test n (%) | Positive test n (%) | |
| Sickle cell disease | 657 (6.77) | 1000 (7.17) | 645 (7.61) |
| Sickle cell trait | 659 (6.79) | 1009 (7.23) | 585 (6.90) |
| Beta-thalassemia major | 2 (0.02) | 1 (0.01) | 2 (0.02) |
| Beta-thalassemia minor | 346 (3.57) | 385 (2.76) | 292 (3.44) |