Table 4.

Relationship between the mean foetal haemoglobin level and complications of sickle cell anaemia in the subjects.

SCA complications		HbFMean ± SD	t	p value
Dactylitis	Yes	9.9 ± 6.6	0.087	0.931
	No	9.8 ± 5.6
ACS	Yes	6.9 ± 3.9	−3.243	0.002
	No	10.5 ± 6.2
Osteomyelitis	Yes	8.9 ± 5.1	−0.661	0.510
	No	10.0 ± 6.2
Stroke	Yes	5.6 ± 1.5	−4.296	0.010
	No	10.0 ± 6.1
Priapism	Yes	5.6 ± 2.1	−1.025	0.308
	No	10.0 ± 6.0
Legulcer	Yes	3.0 ± 2.3	−1.676	0.097
	No	10.1 ± 6.0
AVN	Yes	9.5 ± 10.0	−0.246	0.806*
	No	9.9 ± 6.0
Septicarthritis	Yes	4.5	−0.896	0.373
	No	9.9 ± 6.0

ACS – acute chestsyndrome; AVN – avascular necrosis; SCA – sickle cell anaemia

^*Difference in the mean HbF for those with and without AVN was tested by Mann Whitney U test