Transgender population in the Russian Federation: diversity and trends.

This report presents socio-demographic data of gender incongruent patients, searching for gender affirming medical care (GAMC) in Russia by retrospective medical records analysis of patients. Data of 1117 patients were included in the analysis. Over the period from 2014 to 2021, there was a significant increase in the number of applications (+123.

[The problem of the use of hormonal therapy aimed for sex correction by transgender persons on their own initiative].

Background: In recent years, the demand for feminizing and masculinizing hormone therapy has increased significantly among transgender people around the world. There are no such studies in Russia and the amount of medical information on the transgender population is limited.

Aim: to assess the number of transgender patients who take hormone therapy without a doctor's prescription and to characterize the medicines they use.

Coronavirus syndrome: COVID-19 psychotrauma.

The authors propose term "coronavirus syndrome" for the mental disorder that is a psychical response to the global problem of COVID-19 pandemic. This syndrome will affect up to 10% of the population and we could already observe acute stress reactions to the spread of the infection and changes in people's ordinary lifestyle. However, the most severe response will be seen later, in this case the catastrophe is similar to the clinical picture of post-traumatic stress disorder.

[Discriminant EEG analysis for differential diagnosis of schizophrenia. Methodological aspects].

Background: A search for accurate linear discriminant function (LDF) allowing the diagnosis of schizophrenia and estimation of treatment effectiveness according to EEG is an urgent problem.

Objective: To develop a methodology for discriminant EEG analysis for minimizing the overlearning effect, selection of optimal LDF model and evaluation of its generalizing ability.

Material And Methods: Two hundred and twenty patients with schizophrenia and 1400 people without psychiatric diseases, who were comparable in basic characteristics, were enrolled.

[The use of eeg discriminant analysis in the diagnosis of schizophrenia].

Aim: There have been no criteria found so far to quantify the wide range of EEG spectral and coherent indicators, which would allow discrimination between schizophrenia disorders and healthy human states. The goal of this research is to find objective EEG-based schizophrenia criteria through a discriminant analysis and to obtain a linear discriminant function (LDF) with sensitivity and specificity of at least 85%.

Material And Methods: The study covered 83 schizophrenia patients and 116 healthy individuals, with similar major characteristics.