{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T16:01:17Z","timestamp":1792598477693,"version":"4.5.0"},"reference-count":49,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2023,8,21]],"date-time":"2023-08-21T00:00:00Z","timestamp":1692576000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Endocrinol."],"abstract":"Background<\/jats:title>To determine whether progestin-primed ovarian stimulation (PPOS) is more effective for women with diminished ovarian reserve (DOR) than clomiphene citrate (CC)\/letrozole (LE) plus gonadotropin in IVF or ICSI treatment.<\/jats:p><\/jats:sec>Methods<\/jats:title>Nine databases were searched until May 24, 2023, to identify relevant studies. Forest plots were used to present the results of this meta-analysis. Begg\u2019s and Egger\u2019s tests were applied to estimate publication bias. Subgroup and sensitivity analysis were performed to check the potential sources of heterogeneity and verify the robustness of the pooled results, respectively.<\/jats:p><\/jats:sec>Results<\/jats:title>A total of 14 studies with 4182 participants were included for meta-analysis. There was evidence of a statistically notable increase in clinical pregnancy rate (OR = 1.39, 95%CI [1.01, 1.91], p<\/jats:italic> = 0.05), optimal embryos rate (OR = 1.50, 95%CI [1.20, 1.88], p<\/jats:italic> = 0.0004), and cumulative pregnancy rate (OR = 1.73, 95%CI [1.14, 2.60], p<\/jats:italic> = 0.009), the duration and the amount of gonadotropin required (MD = 1.56, 95%CI [0.47, 2.66], p<\/jats:italic> = 0.005; SMD = 1.51, 95%CI [0.90, 2.12], p<\/jats:italic> &lt; 0.00001), along with decrease cycle cancellation rate (OR = 0.78, 95%CI [0.64, 0.95], p<\/jats:italic> = 0.02), luteinizing hormone (LH) level on the day of hCG (SMD = -0.81, 95%CI [-1.10, -0.53], p<\/jats:italic> &lt; 0.00001), and premature LH surge rate (OR = 0.10, 95%CI [0.07, 0.15], p<\/jats:italic> &lt; 0.00001) when PPOS was used. No evidence for publication bias within results was revealed.<\/jats:p><\/jats:sec>Conclusions<\/jats:title>Based on evidence-based results, PPOS protocol seems to improve IVF\/ICSI outcomes for women with DOR. More research with larger sample sizes and rigorous designs are required to further explore the value of PPOS among women diagnosed with DOR.<\/jats:p><\/jats:sec>Systematic review registration<\/jats:title>www.crd.york.ac.uk<\/jats:uri>, identifier CRD42023430202.<\/jats:p><\/jats:sec>","DOI":"10.3389\/fendo.2023.1232935","type":"journal-article","created":{"date-parts":[[2023,8,21]],"date-time":"2023-08-21T15:44:54Z","timestamp":1692632694000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":23,"title":["The clinical value of progestin-primed ovarian stimulation protocol for women with diminished ovarian reserve undergoing IVF\/ICSI: a systematic review and 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