Table 2.

Relationship between hemostasis abnormalities predisposing to thrombosis and SCD phenotypes

	Patients N (%)	Controls N (%)	P
S/S phenotype
PC deficiency	15 (46.87)	1 (1.66)	0.000
PS deficiency	17 (53.12)	1 (1.66)	0.000
AT deficiency	9 (28.12)	0 (0.00)	0.000
FVIIIc increase	31 (96.87)	4 (6.66)	0.000
S/β thalassemia phenotype
PC deficiency	7 (35)	1 (1.66)	0.000
PS deficiency	7 (35)	1 (1.66)	0.000
AT deficiency	0 (0.00)	0 (0.00)	*
FVIIIc increase	8 (40)	4 (6.66)	0.000
S/A phenotype
PC deficiency	2 (6.89)	1 (1.66)	0.200
PS deficiency	1 (3.44)	1 (1.66)	0.595
AT deficiency	0 (0.00)	0 (0.00)	*
FVIIIc increase	9 (31.03)	4 (6.66)	0.002

PC protein C, PS protein S, AT antithrombin

* No statistics are computed because AT is a constant