Hematocrit values (%) Frequency (%) χ2 P- value
SCA Controls
> 36 (Normal) 0 (0) 49 (81.67) 79.47 < 0.001*
30 - 35.9 (Mild) 9 (15) 11 (18.33) 0.06 0.8065
21 - 29.9 (Moderate) 40 (66.67) 0 (0) 57.04 < 0.001*
18 - 20.9 (Severe) 11 (18.33) 0 (0) 10.01 0.0016*
*Statistically significant. (the degree of freedom = 1)
Table 3: Hematocrit values in patients and controls.