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Table 1 Risk factors of ectopic pregnancy [19,20,21,22,23]

From: Elective uterine artery embolization prior to laparoscopic resection of interstitial pregnancy: two cases and literature review

Highly increased risk (OR = 4–40)

Moderately increased risk (OR = 2–20)

 Previous tubal surgery

 Infertility

 Documented tubal pathology

 Previous genital infections

 History of EP

 Multiple sexual partners

 In-utero exposure to DES

 

 Use of IUD [22, 23]

 

Minimally increased risk (OR = 1-4)

Other risk factors

 Previous pelvic/abdominal surgery

 Age (> 35–40 years)

 Cigarette smoking

 Assisted reproductive technologies

 Vaginal douching

 Anatomical uterine abnormality

 Early age at first intercourse

 Non-Caucasian

 Prior spontaneous or medically induced abortion

  1. OR odds ratio, EP ectopic pregnancy, DES diethylstilbestrol, IUD intra-uterine device