A multivariate method of evaluating the effectiveness of optimizing the daily routine of schoolchildren
Annotation. The mode of a modern schoolboy-teenager is characterized by insufficient duration of night sleep, prolongation of homework, non-observance of diet, reduction of daily physical activity, excessive screen time, which under constant exposure can provoke a number of non-infectious and psychosomatic disorders. The purpose of the study is to evaluate the effectiveness of optimizing the daily routine of schoolchildren using the method of modeling structural equations. The study involved 175 students aged 10–14 years. Health status was assessed according to preventive medical examinations and screening-questionnaires with the calculation of the level of ill health and the coefficient of determination. Statistical data processing was performed using the licensed package SPSS Statistic v. 20 using one-way analysis of variance, correlation analysis, Chi-square test according to the Friedman method, Student’s t-test, as well as the method of modeling by structural equations (SEM) in the statistical package SEPATH Statistica. Using a normalized coefficient of determination, it was determined that for students in the experimental group were the most common signs of cardiorheumatological and allergic pathological conditions. Based on the pre-determined significance of the elements of the daily routine, the primary measures of primary prevention of pathological conditions were selected and implemented. The application of the multivariate SEM method using block data structures grouped by 11 variables (according to disease classes) and 15 blocks-elements of the daily routine allowed to evaluate the effectiveness of the prevention program. Pathology of the nervous (χ2=19.54; p<0.0001), respiratory (χ2=13.47; p=0.001) and cardiovascular systems (χ2=9.88; р=0.007) was determined to be the most “sensitive” to the impact of preventive measures. Thus, the proposed model allows to systematize the blocks that characterize both the prevention program and its effectiveness at different stages of implementation, which was determined by the level of morbidity of schoolchildren. The use of targeted preventive measures reduced the incidence rate by 10% in the experimental group against the background of an increase in pathological lesions in the control group by 22.9%.