Table 1 Demographic data of cases vs. controls

Age

(years) mean ± SD

9.87 ± 3.40

9.16 ± 2.6

0.273

Median (min-max)

10 (5–18)

9 (5–17)

Weight (kg)

mean ± SD

26.77 ± 8.87

26.77 ± 6.28

1.000

Surface area (m²) mean ± SD

0.90 ± 0.21

0.91 ± 0.17

0.893

Serum ferritin (ng/dL) median (IQR)

370 (135–900)

LDH (units/l) median (IQR)

400 (251–583)

Reticulocytes (%) median (IQR)

5.9 (2-8.3)

Total bilirubin (mg/dl) median (IQR)

1.8 (1.2–2.3)

Direct bilirubin (mg/dl) median (IQR)

0.4 (0.3–0.5)

Hemoglobin (gm/dl) median (IQR)

8.65 (7-10.4)

Number of VOC/year median (IQR)

3 (1–5)

Volume of blood transfusion /year (ml/kg) median (IQR)

30(15–60)

Age of start of blood transfusion (years) median (IQR)

1.5 (1–2)