Digit ratio (2D:4D) and transgender identity: new original data and a meta-analysis.

ABSTRACT: Previously reported associations between second-to-fourth digit length ratio (2D:4D), a proxy for prenatal androgen load, and transgender identity have been inconsistent. The objectives of the present study were to provide additional original data and an updated meta-analysis concerning this association. In a study of 464 participants, we compared the 2D:4D of transgender individuals with age- and sex-matched controls. Patients were recruited at a specialized psychiatrist's medical office, whereas controls were hired via flyers, advertisements, and as convenience sample. A random-effects meta-analysis of the literature (17 samples, n = 3674) also quantifies the overall magnitude of the difference in 2D:4D between transgender individuals and controls. In our study providing new original dat

SUBMITTER: Siegmann EM 

PROVIDER: S-EPMC7653965 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature