It has been said that the body weight of the newborn infant was influenced by the various factors; race, climate, sex of the newborn infants, duration of pregnancy, age of mother, parities and nutritional condition and the socio-economic status of parents.
As a first step, authors have tried to obtain the average birth weight of newborns, delivered at the Seoul National University Hospital in relation with their parity and gestational period.
The data derived from the delivery room of Department of Obstetrics and Gynecology of Seoul National University Hospital from 1962 to 1966 has been used.
The. results are as follows;
1) The-average body weight of the newborn infants is 3.314gm.
2) The average -body weightt of the male and female are 3, 362.gm and 3, 262gm respectivly.
3) The data of the average body weight of newborn classified by weeks after L.M.P. shows the increase in body weight to 41 weeks and after that significant increase has not been noted.
4) There is no significant difference between the data of the average body weight grouped by year for five years.
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