Medical and environmental indicators of the efficiency of the implementation of the “Clean air” project

Introduction. Given the relevance of air pollution, it is necessary to examine the effectiveness of projects aimed at improving environmental quality.

Objective. To assess the effectiveness of the “Clean Air” project using medical and environmental indicators, using the city of Bratsk as an example.

Materials and Methods. Data of monitoring for 2015–2024 in a city with a developed industrial and energy complex was analyzed. Health risks were characterized using hazard coefficients and indices (HQ, HI), relative risk of respiratory diseases. The indicators were calculated taking into account two periods, with 2022–2024 considered as the result of implementing a set of measures.

Results. In 2022–2024, the city saw a decrease in the content of 3,4-benzo(a)pyrene by 1.8 times, carbon disulfide by 3.2 times, nitrogen dioxide by 2.7 times, suspended matter by 1.9 times, and hydrogen fluoride by 1.7 times. This led to a decrease in the incidence of respiratory diseases in children: RR was 1.28 CI (1.19–1.37), the etiologic share of external factors (EF) is estimated at 21.8%, for ARI – 1.28 CI (1.22–1.34), EF = 21.7. According to the incidence of bronchial asthma and asthmatic status, two risk groups can be distinguished: 0–4 years (RR = 1.84; EF = 45.6) and 10–14 years (RR = 1.95; EF = 48.1).

Limitation. Uncertainties in the results are related to the specifics of using medical documentation reporting forms and insufficient epidemiological knowledge about the relationship between morbidity and air pollution.

Conclusion. To assess the effectiveness of the program, it is advisable to analyze the trend in airborne pollutant levels, taking into account seasonal changes.

Compliance with ethical standards. The study does not require the submission of a biomedical ethics committee opinion or other documents.

Contributions:
Rukavishnikov V.S., Lakhman O.L. – study concept and design, editing;
Efimova N.V. – study design, data collection, writing, editing;
Mylnikova I.V. – statistical data processing, writing;
Bobkova E.V. – data collection, statistical data processing, writing.
All authors are responsible for the integrity of all parts of the manuscript and approval of the manuscript final version.

Conflict of interest. The authors declare no conflict of interest.

Funding. The study had no sponsorship.

Received: October 29, 2025 / Accepted: December 2, 2025 / Published: January 15, 2026

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