ArticleReproductive medicine and biology
The ratio of 2nd to 4th digit length and reproductive function of infertile male patients.
Article in Reproductive medicine and biology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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
7 citing papers in PubMed.
- Urinary isoflavone concentrations and semen parameters of Japanese men seeking fertility treatment.Asian journal of andrology · 2026Article
- Genetic, Epigenetic, and Non-Genetic Factors in Testicular Dysgenesis Syndrome: A Narrative Review.Genes · 2025Review
- Association of 2D:4D finger length ratio of People Working in different professions with personality traits.Heliyon · 2024Article
- Association between Sperm Mitochondrial DNA Copy Number and Concentrations of Urinary Cadmium and Selenium.Biological trace element research · 2024Article
- CD9 protects the sperm from cytotoxic factors in the epididymis as extracellular components.microPublication biology · 2023Article
- The ratio of 2nd to 4th digit length and reproductive function of infertile male patients.Reproductive medicine and biologyArticle
- Association of the Ratio of Second to Fourth Digit Length and Phthalate Exposure With Sexual Function in Japanese Men Seeking Fertility Treatment.American journal of men's healthArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Purpose: To investigate the relationship between the ratio of index to ring finger lengths (2D:4D ratio), reflecting androgen exposure in utero, and reproductive function among men. Methods: Male patients ( Results: The total sperm count was significantly negatively correlated with the 2D:4D ratio of the left hand ( Conclusions: No clear associations were observed between the 2D:4D ratios and reproductive function.
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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 OpenQuestion graph.