Purpose. Establishing regularities of change in the injury probability and development of a methodology for determining the injury probability of coal mine workers to improve the occupational health and safety (OSH) management system efficiency. Methods. Methods of mathematical statistics and mathematical analysis were used in the data processing of coal mine workers’ injuries; probability theory and risk theory were applied for setting equations to determine the injury probability; correlation and regression analysis were used to determine the density and nature of the dependences reflecting changes in the injury probability. Findings. A calculator has been developed to compute the injury probability of an employee. This instrument distributes the probability into three “zones”: high probability – “red zone”, medium probability – “yellow zone”, and low probability – “green zone”. The injury probability for all employees of the mine administration was calculated. It was found that the clo-sest relationship between the number of injuries and the calculated probability is observed for mining sites (medium probability) and for tunneling sites (high probability). For employees with a calculated high injury probability, in most cases, the causes of injury were objective and less dependent on employees themselves. For employees with a medium probability, the causes independent of and dependent on employees were approximately equally correlated. In the case of employees with a low probability, the main reasons were subjective – dependent on the employees themselves. For employees in the main operational sites (mining and tunneling), the cause of injury is directly related to the specifics of the production operations performed: the presence of loose space. Originality. For the first time, relationships were determined between the injury probability and the profession. We also established relationships between experience at the enterprise, age, marital status of an employee and the injury causes, as well as between the actual number of injuries and the calculated injury probability. Practical implications. A method for determining the injury probability of coal mine workers has been developed and implemented. The ways of improving the methods for calculating the injury probability are determined.

Annotation. The military events in Ukraine (2022-2023 years), the economic and social changes closely related to them led to an increase in the level of social tension, social anxiety, and the appearance of stress among the Ukrainian population. The purpose of this study is to assess level of anxiety, depression and stress in Ukrainian medical students. The DASS-21 questionnaire (Ukrainian language version) was used to investigate 374 medical students of the II-III years of study in Vinnytsya National Medical University (the average age 19.47±0.11 years, boys – 148, girls – 226). Testing was carried out in the territory where there are no military operations, in the non-sessional period. The test results were statistically processed using the statistical analysis package of the Microsoft Excel program. It was found that there are only 67 medical students who have normative values of the DASS-21 test (17.91±1.98%). Depression of varying degrees (from mild to very severe) occurs in 198 (52.94±2.58%) students, stress is detected in 190 (50.80±2.59%) people, and anxiety in 240 (64.17±2.48%). Statistically significant gender differences in the results of the DASS-21 test are observed, in particular, the percentage of people with depression, anxiety and stress among women is higher than among guys (respectively, p˂0.001, p˂0.001, p˂0.01), female students probably more often (compared to boys) feel depressed and moody (p˂0.001), terrified (p˂0.01), close to panic (p˂0.001), or they are disturbed by situations that can cause panic or lead to deception (р˂0.001), they spend a lot of nervous energy (р˂0.001), feel low self-esteem as individuals (р˂0.01), loss of initiative (р˂0.05), the ability to feel something positive in general (p˂0.05), are too sensitive (p˂0.001), worried, excited (p˂0.01). Thus, in the difficult socio-economic conditions of the military conflict between Russia and Ukraine, there is widespread depression, anxiety and stress among students, studying in a higher medical institution in Ukraine, not in a combat zone. It is advisable to analyse the strategies for getting out of stressful situations used by modern students, assess their suicidal risks, and widely promote psycho-relaxing techniques and the most optimal strategies for overcoming stress among medical students.

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