What does this research mean for the field?

The population-based prevalence of Autism Spectrum Disorder among elementary school children in Russia is estimated at 22.2 per 1,000, substantially exceeding official administrative statistics and highlighting significant underdiagnosis due to systemic barriers. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.CHALLENGES_CONSENSUS.

What question did this study set out to answer?

This study aims to estimate the prevalence of Autism Spectrum Disorder (ASD) in Russian elementary school children and identify barriers to diagnosis.

April 10, 2026Frontiers in Psychiatry0 citationsOpen Access

A prevalence study of Autism Spectrum Disorder in Russia

OTOksana I. TalantsevaSirius University of Science and Technology RRRaisa S. RomanovaSirius University of Science and Technology JKJulia E. KuznetsovaSirius University of Science and Technology

Key Points

This study aims to estimate the prevalence of Autism Spectrum Disorder (ASD) in Russian elementary school children and identify barriers to diagnosis.
Population-based prevalence study among grades 1-3 (n=34,847) using SCQ, ADOS-2, ADI-R instruments.
Epidemiological two-phase approach with a 25.6% diagnostic phase participation rate.
Utilized Bayesian regression to correct for screening misclassification.
ASD prevalence estimated at 22.2 per 1,000 children (95% CIs: 18.6-36.0), significantly higher than reported government statistics.
Higher identification rates of ASD observed in special education and resource classes compared to general education.
Bayesian sensitivity analysis confirmed robustness of estimates across varying sensitivity and specificity values.

Abstract

Introduction: Autism Spectrum Disorder (ASD) is a neurodevelopmental condition marked by heterogeneity in presentation. In recent decades, ASD prevalence has risen globally, yet data from non-Western and middle-income countries, including Russia, remain scarce. Thus, Russian official statistics report a prevalence of 0.41 per 1,000 (0.041%), far below global estimates of 32.2 per 1,000 (3.2%), indicating underdiagnosis. This study provides the first population-based estimate of ASD prevalence among Russian elementary school children and examines barriers to diagnosis and treatment. Methods: The study followed a two-phase epidemiological approach and utilized well-known instruments (SCQ, ADOS-2, ADI-R) for ASD identification. The target population included all students in grades 1-3 (n = 34,847), stratified into mainstream, special education, and resource classes. The diagnostic phase had a 25.6% participation rate. ASD prevalence was estimated using Bayesian regression correcting for screening misclassification. Results: The estimated ASD prevalence was 22.2 per 1,000 children (95% CIs: 18.6-36.0), substantially exceeding what is reported based on the RF administrative data. ASD was more frequently identified in students from special education and resource classes than in general education settings. A Bayesian sensitivity analysis confirmed the robustness of prevalence estimates across plausible values for sensitivity and specificity. Discussion: These findings suggest that ASD prevalence in Russia is considerably underestimated via administrative data. Systemic barriers-including limited access to diagnostic services and stigma surrounding psychiatric labels-may hinder ASD identification. Addressing these challenges is essential for improving early detection and service provision in Russia and similar contexts.

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