Research Article
ABO and Rhesus Blood Groups and Risk of Endometriosis in a French Caucasian Population of 633 Patients Living in the Same Geographic Area
Table 2
Distribution of combined ABO and Rh blood groups in women with and without endometriosis.
| | | Endometriosis
(%) | Controls
(%) | Total
(%) | valuea |
| | Blood group | | | | | | A positive | 117 (37.6) | 116 (36.0) | 233 (36.8) | 0.138 | | A negative | 31 (10.0) | 23 (7.1) | 54 (8.5) | | B positive | 22 (7.1) | 32 (9.9) | 54 (8.5) | | B negative | 10 (3.2) | 4 (1.2) | 14 (2.2) | | AB positive | 7 (2.3) | 6 (1.9) | 13 (2.1) | | AB negative | 3 (1.0) | 4 (1.2) | 7 (1.1) | | O positive | 93 (29.9) | 119 (37.0) | 212 (33.5) | | O negative | 28 (9.0) | 18 (5.6) | 46 (7.3) | | Total | 311 (100.0) | 322 (100.0) | 633 (100.0) | |
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aPearson chi-square.
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