Table 1 Demographic and clinical characteristics of study population

Male: Female

25: 23

Age, mean (range in years)

12+/-3.1 (3–17)

History of acute chest syndrome, n (%)

19 (39.6)

Elevated stroke risk, n (%)

6 (12.5)

Pre-hypertension, n (%)

4 (8.3)

Hypertension, n (%)

4 (8.3)

eGFR* mean (range)

140+/-34.9 (71.9–404.2)

eGFR* sugroups

<90

4

90-120

9

>120

35

Sickle cell genotype

SS, n (%)

32 (66.7)

SC, n (%)

9 (18.8)

S beta + -thalassemia, n (%)

6 (12.5)

S beta 0-thalassemia, n (%)

1 (2.1)