ABO and Rhesus Blood Groups and Risk of Endometriosis in a French Caucasian Population of 633 Patients Living in the Same Geographic Area

Table 3

Distribution of ABO and Rh blood groups in women with endometriosis according to the clinical subtypes of disease.

	SUP; (%)	OMA; (%)	DIE; (%)	value^a
ABO groups				0.34
A	28 (53)	47 (43)	73 (49)
AB	2 (4)	6 (5)	2 (1)
B	5 (9)	15 (14)	12 (8)
O	18 (34)	42 (38)	61 (41)
Rhesus				0.26
Positive	37 (70)	83 (75)	119 (80)
Negative	16 (30)	27 (25)	29 (20)
Total	53	110	148

^aPearson chi-square.
SUP: superficial endometriosis; OMA: endometrioma; DIE: deep infiltrating endometriosis.