A clinical study on macrosomia

Objective: Macrosomia is one of the important problems in obstetrics and perinatology. This study was to investigate the changing trend in incidence, area distribution, and other relavant factors of macrosomia. Methods: We studied 2,206 cases of large babies weighing 4,000 g or more among 72,084 deliveries at Catholic Medical College Hospital from Jan. 1, 1993 to Dec. 31, 2003. The cases were divided into two group, one group from 1993 to 1998 (group I), the other group from 1998 to 2003 (group II). Results: The incidence of large babies weighing 4,000 g or more was 3.06%. The incidence of macrosomia in group I was 3.02%, and that from group II was 3.14% (P=0.149). The incidence of macrosomia throughout the country was 2.5-3.3%. The average body weight of macrosomia was raised by 30 g from 4,218224 g in group I to 4,248246 g. in group II (P=0.003). The average of maternal body weight was raised by 246 g from 73.129.08 kg in group I to 75.569.64 kg in group II (P