Characteristics of the Dallas Newborn Cohort
Genotype .  | SS .  | Sβ° .  | SC .  | Sβ+ .  | Total .  | 
|---|---|---|---|---|---|
| No. | 431 | 17 | 215 | 48 | 711 | 
| Male, % | 53.1 | 64.7 | 47.0 | 54.2 | 51.6 | 
| Patient-years of observation | 3571 | 144 | 1632 | 301 | 5648 | 
| Status, no. | |||||
| Active | 305 | 8 | 145 | 38 | 496 | 
| Inactive | 33 | 3 | 44 | 6 | 86 | 
| Lost to follow-up | 11 | 0 | 12 | 2 | 25 | 
| Moved | 32 | 5 | 10 | 0 | 47 | 
| Deceased | 22 | 0 | 2 | 1 | 25 | 
| Transitioned to adult care | 4 | 0 | 2 | 1 | 7 | 
|     Chronic transfusions currently  |  24  |  1  |  0  |  0  |  25  | 
Genotype .  | SS .  | Sβ° .  | SC .  | Sβ+ .  | Total .  | 
|---|---|---|---|---|---|
| No. | 431 | 17 | 215 | 48 | 711 | 
| Male, % | 53.1 | 64.7 | 47.0 | 54.2 | 51.6 | 
| Patient-years of observation | 3571 | 144 | 1632 | 301 | 5648 | 
| Status, no. | |||||
| Active | 305 | 8 | 145 | 38 | 496 | 
| Inactive | 33 | 3 | 44 | 6 | 86 | 
| Lost to follow-up | 11 | 0 | 12 | 2 | 25 | 
| Moved | 32 | 5 | 10 | 0 | 47 | 
| Deceased | 22 | 0 | 2 | 1 | 25 | 
| Transitioned to adult care | 4 | 0 | 2 | 1 | 7 | 
|     Chronic transfusions currently  |  24  |  1  |  0  |  0  |  25  |