Table 1 Clinical characteristics of the participants (N = 101).

Age (years)

25.1 ± 7.9

Male sex, n (%)

52 (51.5%)

Weight (kg), median (IQR)

48.1 (41.8–52.9)

Height (cm), median (IQR)

155.5 (149.0–161.9)

BMI (kg/m²)

20.0 ± 2.5

Age at diagnosis (years), median (IQR)

0.8 (0.5–2.0)

Age of starting regular blood transfusion (years), median (IQR)

1.0 (0.5–3.0)

Duration of blood transfusion (years)

23.3 ± 8.0

Time interval between ferritin and lung function test (days), median (IQR)

47.0 (21.0–72.0)

Serum ferritin (pmol/L), median (IQR)

4118.0 (2505.5–6459.5)

Time interval between MRI cardiac T2* and lung function test (days), median (IQR)

161.0 (107.0–243.0)

MRI cardiac T2* relaxation time (ms) (N = 47)

34.7 ± 17.9

Number of patients who had cardiac T2* <  = 20 ms, n (%)

9 (19.1%)

Time interval between MRI liver T2* and lung function test (days), median (IQR)

173.5 (127.3–240.8)

MRI liver T2* relaxation time (ms), median (IQR) (N = 36)

4.7 (2.3–10.9)

Number of patients who had liver T2* <  = 6.3 ms, n (%)

21 (58.3%)