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[Epidemiology of the pregnant women risk groups according to Troszynski's criterion with special regard to risk factors of potentially environmental character].

THE AIM
To evaluate the occurrence of specific increased risk groups of pregnancies against a background of the environment contamination in Rybnik. Environmental pregnancy risk factors were particularly taken into consideration.


METHODS
Pregnant women giving birth in the Obstetrical Department in Rybnik in the years 1986-2000. Were study subject. The occurrence of factors dependent on the environment was the object of the inquiry.


RESULTS AND CONCLUSIONS
The concentration of chemical substances in Rybnik in the years 1988-2000 revealed a declining tendency. Uncomplicated pregnancies were noticed in 50% of the cases. There was no evident correlation between professional activity and the occurrence of increased risk groups.