ABO and Rh blood groups distribution in patients with endometriosis
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The aim of this investigation was twofold: first, to demonstrate an association between endometriosis, ABO blood groups and Rhesus factor and, second, to show potential correlation of ABO blood group and stages of endometriosis.
Two hundred and thirty-one women with endometriosis and 166 infertile women without endometriosis were studied retrospectively at the Yale University Hospital. All the cases were diagnosed by laparoscopy and in all of them ABO blood groups and Rhesus factor were determined by standard techniques. Women with endometriosis were divided into two groups according to the stage: Group 1 included 124 cases with stages I and II, and Group 2, 107 women with stages III and IV. Statistical methods included χ2 and odds ratios (95% CI).
The identified distribution of ABO and Rh blood groups in women with endometriosis differed significantly from that of the women without endometriosis [χ2 = 26.27, (P < 0.001); χ2 = 18.71, (P < 0.001), respectively]. The blood group A was more predominant in women with endometriosis, while blood group O was less predominant. The overall risk of women with endometriosis and A blood group was 2.89 (95%CI, 1.85–4.52). No significant difference was detected in ABO and Rh blood groups in women with endometriosis according to the severity of disease.
Women with endometriosis have a 2.9-fold increased risk in the A blood group distribution. The role of blood groups in the development of endometriosis remains to be determined.
- ABO and Rh blood groups distribution in patients with endometriosis
Archives of Gynecology and Obstetrics
Volume 280, Issue 6 , pp 917-919
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- ABO and Rh blood groups
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- 1. Division of Reproductive Endocrinology and Infertility, Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, USA
- 2. Department of Obstetrics and Gynecology, University of Crete, P.O. Box 1393, 714-09, Heraklion, Greece