The proportions of preterm and post-term births increased while the average birth weight in term infants decreased over the 20-year period of observation. Further research should address those factors that could explain the observed pattern of pregnancy outcomes in the Komi Republic.
Data on all births in women of the city of Syktyvkar and adjacent villages (38 377 and 3828 births, respectively) were analyzed for the period from 1980 to 1999. Data on the women's age at childbirth, the delivery time, the body weight and length of the newborns, and their scores on the Apgar scale were taken into account. The season was found to be of importance for pregnancy and was associated with the woman's age at conception. The birth outcome parameters were identified as sensitive markers of the effect of unavoidable environmental factors of the North on the bodies of its residents.
Author has studied the average birth weight using the birth register from Syktyvkar and Vorkuta of Komi Republic. The prevalence of anemia was higher in Vorkuta. Infants born to woman with anemia were heavier than infants of non-anemic mothers were (Sykvyvkar, р<0,001). Babies of anemic mothers from the third or more deliveries were heavier than from the first deliveries (Vorkuta, p<0,001).
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