Table 4. Comparison between the prevalence of thrombophilias found in this study and in the general population.

	Protein C deficiency	Protein S deficiency	Antithrombin deficiency	G20210A mutation in the prothrombin gene	G1691A mutation in the factor V gene
Idiopathic	12.5%	25%	0%	0%	0%
Secondary	6.25%	6.25%	0%	0%	6.25%
General population*	0.2 to 0.4%	0.03 to 0.13%	0.02%	1 a 4%	2 a 5%

^*Data obtained from the literature series. ^{4 , 14 , 15 , 20 , 21}