BACKGROUND: Calls for an "Ambulance" is an objective indicator of the disruption of adaptation and health disorders in the uncomfortable conditions of the northern region, especially when the epidemiological situation changes, which determined the relevance of this.
AIM: according to the data of a long-term monitoring, to evaluate the gender and age characteristics of calls for an Ambulance service of the population of the northern region in periods with different epidemiological conditions.
METHODS: Information about calls was selected from the database from 2015 to 2021 on average per day and stratified by gender and age. Statistical processing was carried out using wavelet analysis.
RESULTS: When assessing gender differences during a pandemic, the coefficient reflecting the ratio of the number of calls to women/men decreases due to an increase in the number of men. The structure of calls by age is characterized by the presence of two risk groups - early childhood and the second mature age. During the pandemic, the structure of calls does not undergo qualitative changes. Several scenarios of desynchronosis induced by the COVID-19 pandemic have been identified. Newborns: Disorganization of a constant rhythm during a pandemic. In infants, changes in the epidemiological situation do not affect constant rhythms. The change of the constant circadian rhythm to long-term and intercalary intra-annual rhythms is observed in the groups of early, first, second childhood and youth. In adolescents and in sample 1 of adulthood, the pandemic acts as a synchronizer. In older age groups, the circadian rhythm is maintained throughout the entire period; the time of the pandemic is characterized by joining rhythms with a shorter period.
CONCLUSION: The structure of calls by age groups is characterized by the presence of two risk groups – early childhood and 2nd mature age. During the pandemic, the structure of calls does not undergo qualitative changes. The presence of COVID-19 is a desynchronizing factor in the temporal structure of health disorders, which destroys long-term and near-annual rhythms and induces the intercalary intra-annual rhythms.