Table 2 Vitamin D in sickle cell disease patients in North America
From: Vitamin D levels are low in adult patients with sickle cell disease in Jamaica and West Africa
Study | Geographic location | Population | Vitamin D levels: 25(OH)D† | ||
|---|---|---|---|---|---|
Cases | Controls | Cases | Controls | ||
Rovner et al. [4] | Philadelphia, PA | N:61 SCD-SS | N:89 African-American | 37 nmol/l (IQR: 25–82) | 52 nmol/l (IQR: 37–90) |
(latitude: 39.95°) | Ages: 5-18 | Ages: 6-18 | |||
Buison et al. [22] | Philadelphia, PA | N:61 SCD-SS | N:33 African American | Total population: 25.5 ± 12.7 nmol/l | African American: 60.7 ± 21.2 nmol/l |
(latitude: 39.95°) | Ages: 5-18 | N:76 Non-African American | Ages: 7–10: N:25 29.5 ± 15.5 nmol/l | Non-African American: 84.6 ± 23.5 nmol/l | |
Ages: 7-10 | |||||