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Systematic review and meta-analysis of prevalence studies in transsexualism
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BACKGROUND: Over the last 50 years, several studies have provided estimates of the prevalence of transsexualism. The variation in reported prevalence is considerable and may be explained by factors such as the methodology and diagnostic classification used and the year and country in which the studies took place. Taking these into consideration, this study aimed to critically and systematically review the available literature measuring the prevalence of transsexualism as well as performing a meta-analysis using the available data. METHODS: Databases were systematically searched and 1473 possible studies were identified. After initial scrutiny of the article titles and removal of those not relevant, 250 studies were selected for further appraisal. Of these, 211 were excluded after reading the abstracts and a further 18 after reading the full article. This resulted in 21 studies on which to perform a systematic review, with only 12 having sufficient data for meta-analysis. The primary data of the epidemiological studies were extracted as raw numbers. An aggregate effect size, weighted by sample size, was computed to provide an overall effect size across the studies. Risk ratios and 95% confidence intervals (CIs) were calculated. The relative weighted contribution of each study was also assessed. RESULTS: The overall meta-analytical prevalence for transsexualism was 4.6 in 100,000 individuals; 6.8 for trans women and 2.6 for trans men. Time analysis found an increase in reported prevalence over the last 50 years. CONCLUSIONS: The overall prevalence of transsexualism reported in the literature is increasing. However, it is still very low and is mainly based on individuals attending clinical services and so does not provide an overall picture of prevalence in the general population. However, this study should be considered as a starting point and the field would benefit from more rigorous epidemiological studies acknowledging current changes in the classification system and including different locations worldwide. Copyright © 2015 Elsevier Masson SAS. All rights reserved.
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ARCELUS, Jon, BOUMAN, Walter pierre, VAN DEN NOORTGATE, Win, CLAES, Laurence, WITCOMB, Gemma l., FERNÁNDEZ ARANDA, Fernando. Systematic review and meta-analysis of prevalence studies in transsexualism. _European Psychiatry_. 2015. Vol. 30, núm. 6, pàgs. 807-815. [consulta: 10 de abril de 2026]. ISSN: 0924-9338. [Disponible a: https://hdl.handle.net/2445/125886]