Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2023 Mar 13;18(3):e0283011.
doi: 10.1371/journal.pone.0283011. eCollection 2023.

Etiology of gender incongruence and its levels of evidence: A scoping review protocol

Affiliations

Etiology of gender incongruence and its levels of evidence: A scoping review protocol

Juan Pablo Rojas Saffie et al. PLoS One. .

Abstract

Introduction: Gender Incongruence refers to the discordance between biological sex and gender identity. Although it is possible to find literature reviews about the etiology of Gender Incongruence, almost all of these correspond to non-systematic narrative reviews, so they do not make explicit the methodology used in the collection and analysis of sources, even less its levels of evidence. In order to remedy this, we will conduct a scoping review to answer the question: what are the factors associated with gender incongruence and what level of evidence is there for each factor in the scientific literature?

Methods and analysis: We will conduct a scoping review according to the methodology specified in the JBI Manual for Evidence Synthesis (Chapter 11) and the PRISMA extension for scoping reviews (PRISMA-ScR). Four databases will be reviewed to identify papers that match our search criteria, followed by a screening of titles and abstracts, the complete reading of those articles that have not been excluded, and the coding of these using the data extraction instrument developed for this research (see S1 Appendix). Data extracted will be analyzed in terms of frequency counts of factors, types of factors and levels of evidence for each factor. Results will be presented in tabular or diagrammatic forms supported by a narrative summary.

Findings: The present review will help to map the factors associated with incongruence between biological sex and gender identity, specifying their levels of evidence. This evidence-based knowledge will be useful for clinicians evaluating gender incongruence, especially given that international guidelines recommend careful assessment of factors that may interfere with the clarity of gender identity development and decision making.

PubMed Disclaimer

Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Fig 1
Fig 1. PRISMA flow diagram.

Similar articles

References

    1. Hirschfeld M. Die intersexuelle konstitution. Jahrbuch für Sexuelle Zwischenstufen. 1923;(23):3–27.
    1. Hirschfeld M. Geschlechtskunde (Vol. 4). Stuttgart: Julius Püttmann.; 1930.
    1. Beek T F., Cohen-Kettenis PT, Kreukels BPC. Gender incongruence/gender dysphoria and its classification history. International Review of Psychiatry. 2016;28(1):5–12. doi: 10.3109/09540261.2015.1091293 - DOI - PubMed
    1. Mas Grau J. Del transexualismo a la disforia de género en el DSM. Cambios terminológicos, misma esencia patologizante. Rev int sociol. 2017. May 24;75(2):e059.
    1. Schneider H, Pickel J, Stalla G. Typical female 2nd–4th finger length (2D:4D) ratios in male-to-female transsexuals—possible implications for prenatal androgen exposure. Psychoneuroendocrinology. 2006. Feb;31(2):265–9. doi: 10.1016/j.psyneuen.2005.07.005 - DOI - PubMed