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[Analysis of perinatal mortality in the Tarnobrzeg region between 1976-1997].

The aim of the work was to show, how the birth weight influenced the mortality of perinatal fetus and newborn babies and it was to indicate the most common death causes. The analysis included 196277 newborn babies and 3767 died (perinatal mortality). During the period 1976-1997 a rate of perinatal mortality decreased from 25.4/1000 to 10.0/1000--it was due to diminution of postnatal mortality and elimination of intranatal deaths. It was noticed that there was the progressive increase of congenital defects among the causes of perinatal deaths.