Age group Number Pre Hydroxyurea HbS Post Hydroxyurea HbS p- value
<10 11 61.89± 17.56 68.09 ± 8.09 0.222 (0.271)
10-19 26 64.42± 11.73 71.88± 8.14 0.031
20-29 13 74.93± 7.61 77.33± 5.78 0.424
30-39 6 73.75± 5.81 70± 6.32 0.224
40-49 5 70.2± 8.18 64.6± 6.80 0.225