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. Author manuscript; available in PMC: 2019 Jul 2.
Published in final edited form as: Br J Haematol. 2011 Oct 24;156(2):259–264. doi: 10.1111/j.1365-2141.2011.08916.x

Table I.

Comparison of haematological values for HbS-HPFH types 1 or 2.

HPFH 1 (n = 7, 2 males)
 HPFH 2 (n = 23, 10 males)
 t-test P-value*
Mean (SD) Range Mean (SD) Range
Average HbF (%) 32⋅6 (3⋅0) 28⋅7–36⋅0 31⋅0 (2⋅3) 27⋅1–35⋅2 0⋅26
Haemoglobin (g/l) 130 (8⋅0) 119–149 125 (12) 100–148 0⋅07
MCV (fl) 73⋅7 (6⋅2) 65⋅0–93⋅6 74⋅9 (6⋅4) 65⋅0–99⋅2 0⋅48

HPFH, Hereditary persistence of fetal haemoglobin; HbS-HPFH, compound heterozygotes for HbS and HPFH; MCV, mean corpuscular volume; SD, standard deviation.

*

There was no significant difference between the average HbF (in patients ≥5 years old), haemoglobin, or MCV between these groups based on t-test analysis.