The body mass index and the risk of ectopic pregnancy: a 5-year retrospective case-control study.

BMC Pregnancy Childbirth

Department of Gynecology & Obstetrics, Tongji Medical College, The Central Hospital of Wuhan, Huazhong University of Science and Technology, Wuhan, 430014, Hubei, China.

Published: February 2024

Purpose: Acknowledging the associated risk factors may have a positive impact on reducing the incidence of ectopic pregnancy (EP). In recent years, body mass index (BMI) has been mentioned in research. However, few studies are available and controversial on the relationship between EP and BMI.

Methods: We retrospectively studied the EP women as a case group and the deliveries as a control group in the central hospital of Wuhan during 2017 ~ 2021. χ test of variables associated with ectopic pregnancy was performed to find differences. Univariate and multivariate binary logistic regression analysis was conducted to analyze the association of the variables of age, parity, history of induced abortion, history of ectopic pregnancy, history of spontaneous abortion, history of appendectomy surgery and BMI (< 18.5 kg/m, 18.5 ~ 24.9 kg/m, 25 kg/m ~ 29.9 kg/m, ≥ 30 kg /m) with EP.

Results: They were 659 EP and 1460 deliveries. The variables of age, parity, history of induced abortion, history of ectopic pregnancy and BMI were different significantly(P < 0.05). Multivariate analysis showed that the variables of age > 35 years old [(OR (Odds Ratio), 5.415; 95%CI (Confidence Interval), 4.006 ~ 7.320, P < 0.001], history of ectopic pregnancy (OR, 3.944; 95%CI, 2.405 ~ 6.467; P < 0.001), history of induced abortion(OR, 3.365; 95%CI, 2.724 ~ 4.158, P < 0.001) and low BMI (< 18.5 kg/m) (OR, 1.929; 95%CI, 1.416 ~ 2.628, P < 0.001])increased the risk of EP.

Conclusion: The history of ectopic pregnancy, history of induced abortion and age > 35 years old were the risk factors with EP. In addition to these traditional factors, we found low BMI (< 18.5 kg/m) with women may increase the risk to EP.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10873945PMC
http://dx.doi.org/10.1186/s12884-024-06319-zDOI Listing

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