Re-evaluation of the endometriosis fertility index for predicting spontaneous pregnancy after surgery: a retrospective study

Yukihiro Azuma, Fuminori Taniguchi, Keisuke Miyamoto, Takaya Nakaso, Ai Ikebuchi, Maako Moriyama, Emiko Yamane, Eri Sato, Tasuku Harada
In: JAPANESE JOURNAL OF GYNECOLOGIC AND OBSTETRIC ENDOSCOPY · 2021 · vol. 37(2) , pp. 1–9 · doi:10.5180/jsgoe.37.2_1 · W4205090822
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⚙ AI-generated summary by claude@2026-06, 2026-06-08 ⓘ

This retrospective study evaluated the endometriosis fertility index's (EFI) ability to predict spontaneous pregnancy in women after surgical treatment for endometriosis.

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⚙ AI-generated deep summary by claude@2026-06, 2026-06-12 · read from full text ⓘ

This retrospective single-institution study re-evaluated the endometriosis fertility index (EFI) for predicting spontaneous pregnancy after surgery in 26 patients who underwent operative treatment for ovarian endometrioma between 2010 and 2016. The authors found a median EFI score of 7 and an overall spontaneous pregnancy rate of 35%, with an ROC-derived EFI cut-off of 8 (AUC 0.79; sensitivity 0.67; specificity 0.82), where spontaneous pregnancy occurred less often with EFI ≤ 7 than with EFI ≥ 8 (18% vs. 67%, P = 0.028). Pregnancy rates were higher with assisted reproductive technology (ART) in the lower EFI group. This paper is centrally about endometriosis — it re-evaluates the EFI as a predictor of spontaneous pregnancy after surgery for surgically treated ovarian endometrioma.

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Abstract

Purpose: To verify the efficacy of the endometriosis fertility index (EFI) for predicting spontaneous pregnancy after surgery for endometriosis.
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Methods

We retrospectively evaluated the predictive value of postoperative EFI for spontaneous pregnancy in 26 patients who underwent surgery for ovarian endometrioma in our institution between 2010 and 2016.

Results

The median EFI score in all patients was 7, and the rate of spontaneous pregnancy after surgery was 35%. The cut-off EFI score obtained from the receiver operating characteristic (ROC) curve was 8 (AUC, 0.79; sensitivity, 0.67; specificity, 0.82). Rate of spontaneous pregnancy with EFI scores ≤ 7 was significantly lower than that with EFI scores ≥ 8 (18% vs. 67%, P = 0.028). Infertility treatment with assisted reproductive technology (ART) increased pregnancy rates in the lower EFI score group.

Conclusion

We confirmed that the EFI was a reliable prediction tool for spontaneous pregnancy in patients with surgically treated endometriosis. In infertile patients with EFI scores ≤ 7, ART therapy should be recommended. © 2021 日本産科婦人科内視鏡学会

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Condition tags

endometriosis

Citation neighborhood

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