SynthesisFertility and sterility2021
Mean differences in maternal body mass index and recurrent pregnancy loss: a systematic review and meta-analysis of observational studies.
Synthesis in Fertility and sterility, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.
What it found
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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
11 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Maternal adiposity and perinatal and offspring outcomes: an umbrella review.Nature human behaviour · 2024Pooled it
- Perinatal outcomes of women with recurrent pregnancy loss undergoing frozen embryo transfer from the Society of Assisted Reproductive Technology database.Fertility and sterility · 2025Article
- Effect of body mass index on pregnancy outcomes in young women with low-prognosis POSEIDON criteria after in vitro fertilization/intracytoplasmic sperm injection.Journal of ovarian research · 2025Article
- Exploring the role and therapeutic potential of RNA N6-methyladenosine modification in abortion disease pathology: a comprehensive review.Frontiers in genetics · 2025Review
- Risk factors associated with pregnancy outcomes in patients with recurrent pregnancy loss after treatment.BMC pregnancy and childbirth · 2024Article
- Preconception and Early-Pregnancy Body Mass Index in Women and Men, Time to Pregnancy, and Risk of Miscarriage.JAMA network open · 2024Article
- Predicting risk of the subsequent early pregnancy loss in women with recurrent pregnancy loss based on preconception data.BMC women's health · 2024Article
- Recurrent Pregnancy Loss Etiology, Risk Factors, Diagnosis, and Management. Fresh Look into a Full Box.Journal of clinical medicine · 2023Review
- The association between body mass index and live birth and maternal and perinatal outcomes afterFrontiers in endocrinology · 2023Article
- Associations between obesity, smoking behaviors, reproductive traits and spontaneous abortion: a univariable and multivariable Mendelian randomization study.Frontiers in endocrinology · 2023Article
- Pre-pregnancy lifestyle characteristics and risk of miscarriage: the Australian Longitudinal Study on Women's Health.BMC pregnancy and childbirth · 2022Article
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Authors and funding
6 authors.
Funding
Abstract
objectiveTo investigate the association of maternal body mass index (BMI) and recurrent pregnancy loss (RPL).
designSystematic review and meta-analysis.
settingNot applicable. PATIENT(S): A total of 3,833 women with RPL and 4,083 women as controls. INTERVENTION(S): Studies were identified through a search of PubMed, Embase, Scopus, and Cochrane. MAIN OUTCOME MEASURE(S): The primary outcome of interest was RPL using the mean differences in maternal BMI as the predictor variable. The results of the meta-analysis were reported as the mean difference with a 95% confidence interval. RESULT(S): In total, 892 studies were reviewed. Pooled data from 25 studies suggested that the maternal BMI of women with a history of recurrent pregnancy loss was significantly higher than the BMI of controls, mean difference 0.7 kg/m CONCLUSION(S): These findings supported an association between maternal BMI and RPL. Large prospective studies are needed to evaluate the influence of maternal BMI on pregnancy outcomes in women with RPL.
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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.