ArticleBMC women's health2026
Association between menstrual cycle length and ovarian reserve markers and stimulation response: a retrospective cohort study.
Article in BMC women's health, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
- Predictive value of serum β-hCG and blastocyst transfer for clinical pregnancy after frozen-thawed embryo transfer: a retrospective cohort study.BMC pregnancy and childbirth · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
aimTo evaluate the relationship between menstrual cycle length (MCL) categories and ovarian reserve biomarkers and controlled ovarian stimulation (COS) response levels. MATERIALS AND
methodsMedical records of women undergoing infertility evaluations between January 2022 and April 2025 were reviewed. A total of 550 women undergoing fresh IVF/ICSI cycles were screened for eligibility, and 440 normo-ovulatory women who met all inclusion criteria were included. Patients were grouped according to MCL (21–28 and 29–35 days). Demographic characteristics (age, body mass index), baseline hormonal parameters (anti-Müllerian hormone (AMH), cycle day-3 follicle-stimulating hormone, luteinizing hormone, and estradiol), and antral follicle count (AFC) were recorded. COS outcomes including the number of retrieved and metaphase II (MII) oocytes, follicular output index (FOI), and follicle-to-oocyte index (FORT) were documented. Fertilization was achieved via IVF or ICSI, and embryo transfer was performed on days 2–5.
resultsAMH levels were significantly lower in the MCL (21–28 days) group than in the MCL (29–35 days) group (p < 0.001). AFC levels were significantly lower in the MCL (21–28 days) group than in the MCL (29–35 days) group (p = 0.003). The number of oocytes developed after stimulation was significantly lower in the MCL (21–28 days) group than in the MCL (29–35 days) group (p < 0.001). The number of MII oocytes was significantly lower in the MCL (21–28 days) group than in the MCL (29–35 days) group (p < 0.001). The clinical pregnancy rate was significantly lower in the MCL (21–28 days) group than in the MCL (29–35 days) group (p = 0.017).
conclusionWithin the normal range of MCLs, longer cycles are associated with higher AMH and AFC levels and greater oocyte yields after controlled ovarian stimulation. Although women with longer cycles showed higher crude clinical pregnancy rates, MCL was not an independent predictor of clinical pregnancy once ovarian reserve markers were accounted for. These findings suggest that MCL is a simple, history-based indicator of underlying ovarian reserve and ovarian response.
Indexed as
Identifiers
What Socratic holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.