Table 1.
Demographic and clinical data of 42 children with sickle cell anemia classified as having low risk of stroke by transcranial Doppler ultrasonography criteria (mean blood flow velocity <170 cm/s) who underwent magnetic resonance continuous arterial spin labeling imaging examinations.
| Variable | All children | Female | Male | Difference p value |
|---|---|---|---|---|
| N=42 | N=24 | N=18 | 0.355§ | |
| Age (years) | 8.1±3.3 | 8.2±3.7 | 8.0±2.9 | 0.890† |
| Hemoglobin (g/dL) | 8.3±1.1 | 8.4±0.8 | 8.2±1.4 | 0.515† |
| Hematocrit (%) | 24.5±3.5 | 24.5±2.9 | 23.5±4.3 | 0.381† |
| Heart rate (1/min) | 85 (58;153) | 88 (68;153) | 84 (58;98) | 0.022* |
| Systolic blood pressure (mm Hg) | 104±11 | 102±10 | 105±12 | 0.494† |
| Diastolic blood pressure (mm Hg) | 51±10 | 50±10 | 52±11 | 0.509† |
| Mean arterial pressure (mm Hg) | 69±9 | 68±9 | 70±10 | 0.448† |
| SPO2 (%) | 98 (90;100) | 97 (90;100) | 98 (93;100) | 0.304* |
Data are: mean ± standard deviation or median (minimum and maximum in parentheses). SPO2 - Capillary blood oxygen saturation (pulse oximetry).
§
Statistics: Pearson ↕2,
†
t-test with unequal variances,
*
Mann-Whitney U test.