ArticleReproductive biology and endocrinology : RB&E2022
Effects of seasonal variations and meteorological factors on IVF pregnancy outcomes: a cohort study from Henan Province, China.
Article in Reproductive biology and endocrinology : RB&E, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.
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Who cites it
14 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.
- Association between season and pregnancy outcomes in fresh embryo transfer cycles: a systematic review and meta-analysis.Frontiers in public health · 2025Pooled it
- Extreme ambient heat and outcomes of assisted reproduction in the continental United States, 1996 to 2018.Environmental research · 2026Article
- Effects of different seasons on the outcome ofFrontiers in reproductive health · 2026Article
- Association between meteorological season and embryo quality in the era of morphokinetics.JBRA assisted reproduction · 2025Article
- The impact of season, temperature, and direct normal irradiance on IVF pregnancy outcomes: a retrospective cohort study.International journal of biometeorology · 2025Article
- Ambient temperature in relation to ovarian reserve and early outcomes following ovarian stimulation and in vitro fertilization.Environmental research · 2025Article
- Association between embryo transfer season and the risks of hypertensive disorders of pregnancy and gestational diabetes mellitus.Journal of assisted reproduction and genetics · 2025Article
- Association between trace metal element concentrations in human blood plasma and early MAR embryological outcomes: a couple-based prospective cohort study.Human reproduction open · 2025Article
- The association between season and meteorological factors on clinical outcomes after fresh embryo transfer: a cohort study from Central Plains, China.Frontiers in endocrinology · 2025Article
- The impact of seasonal variations on IVF pregnancy outcomes: a retrospective cohort study in Jinan, China.Frontiers in medicine · 2025Article
- Seasonality's Impact on Patients Receiving Intracytoplasmic Sperm Injections: A Reproductive Analysis.Journal of pharmacy & bioallied sciences · 2024Article
- Summer versus winter: the impact of the seasons on oocyte quality in in vitro fertilization cycles.Revista da Associacao Medica Brasileira (1992) · 2024Article
- Improved pregnancy rate and sex ratio in fresh/frozenJournal of animal science and technology · 2023Article
- Season and temperature do not affect cumulative live birth rate and time to live birth inFrontiers in endocrinology · 2023Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
objectiveTo investigate whether seasonal variations and meteorological factors influence pregnancy outcomes in women undergoing in vitro fertilization-embryo transfer (IVF-ET) treatment.
designRetrospective cohort study.
settingUniversity-affiliated reproductive medical center. SUBJECTS: Women aged < 35 years undergoing IVF from June 1, 2015, to June 1, 2019.
interventionsCycles were divided into four groups according to the date of the beginning of ovulation induction: spring (659 cycles), summer (578 cycles), autumn (519 cycles), and winter (534 cycles).
resultsThe high-quality embryo rate was higher in autumn and winter than in cycles in which ovulation induction occurred in spring and summer (58.70% vs. 58.78% vs. 62.67% vs. 63.42%; P < 0.001). The results of linear regression analysis showed that the high-quality embryo rate was significantly correlated with the daily average temperature of ovulation induction (P = 0.037). The clinical pregnancy rates of cycles starting ovulation induction in spring, summer, and autumn were significantly higher than those starting in winter (70.71% vs. 73.18% vs. 70.13% vs. 65.17%; P = 0.031), while the biochemical pregnancy rate, early abortion rate, and live birth rate were not significantly different (P > 0.050). Multivariate logistic regression analysis showed significant seasonal variation in clinical pregnancy (OR = 1.643, 95% CI = 1.203-2.243; P = 0.002), and that a higher daily average temperature at the time of ovulation induction increased the clinical pregnancy rate (OR = 1.012, 95% CI = 1.001-1.022; P = 0.031).
conclusionsIn women younger than 35 years who undergo IVF treatment, the season and ambient temperature on the date of the beginning of ovulation induction may have an impact on embryo development and clinical pregnancy.
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