Association between ABO blood groups and preeclampsia.

OBJECTIVE

To determine the association between the ABO blood group and preeclampsia.

METHODS

This is a case-control study that included patients with (n = 253) and without (n = 457) preeclampsia/eclampsia in Northeastern Mexico. Data were obtained from electronic medical records. Binary multiple logistic regression analysis was used for analyzing the association between the ABO blood group and preeclampsia according to parity status while adjusting for potential confounders.

RESULTS

Blood groups A, B, and AB showed adjusted odds ratios of 0.6 (95%CI 0.3-1.0), 1.1 (95%CI 0.6-2.2), and 0.3 (95%CI 0.1-1.1) in multiparous women, respectively. No association was found in nulliparous women either.

CONCLUSIONS

ABO blood groups were not associated with preeclampsia in Mexican women. [Figure: see text].