[Differential evaluation of environmental factors and health of schoolchildren]. / Differentsialnaia otsenka factorov okruzhaiushchei sredy i zdorové shkolnikov.

The problem in the study of the mechanisms of school-children's health formation during their study at school can be solved by applying a systems approach with the use of a multifactorial analysis which combines a host of some environmental components into a number of risk factors identified from the degree of their impact on the health status of pupils. In accordance with the contribution to the dispersion of signs, the role of intraschool environmental factors increases from 12.5% in primary school children to 20.6% in those leaving the eighth form. As pupils grow up, the contribution of sociohygienic factors decreases from 27.5% at the beginning of school study to 13.8% at its end. The pathological affliction factor is 23.3% on admission to school and little changed (20.8%) in old schoolchildren. In cities, the highest contribution to the impact on schoolchildren's health is made by the natural and climatic factor; climatic conditions and environmental pollution account for 10 and 20%, respectively.