Clinical Study
Clinical and Electrocardiographic Evaluation of Sickle-Cell Anaemia Patients with Pulmonary Hypertension
Table 2
Age distribution of patients and controls.
| Age range | Frequency | | df | value | Sickle-cell patients | Controls |
| 18–22 | 26 | 27 | | | | 23–27 | 21 | 20 | | | | 28–32 | 10 | 10 | | | | 33–44 | 5 | 5 | | | |
| Total | 62 | 62 | 0.043 | 3 | 0.999 |
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