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Statistical Observation on Neonate.

Journal of the Korean Pediatric Society 1990;33(8):1037-1047.
Published online August 31, 1990.
Statistical Observation on Neonate.
Hong Ja Kang, Nam Hyuk Joo, Soon Ok Byun, Ji Sub Oh
Department of Pediatrics, Wallace Memorial Baptist Hospital, Pusan, Korea
신생아에 대한 통계적 관찰
강홍자, 주남혁, 변순옥, 오지섭
부산 왈레스 기념 침례병원 소아과
Received: 28 September 1989   • Accepted: 8 November 1989
Statistical observation was performed on 11,857 cases of neonates which were seen in the nursery, Pusan, Wallace Memorial Baptist Hospital, during the past 5 years from Jul. 1983 to Jun. 1988. The results were as follows: 1) Among 11,857 neonates, the percentage distribution by birth weight was 6.1% for 2,500 gm or less, 3.7% for 4,001 gm or more and the sex ratio of male to female was 1.1: 1 2) The mortality rate was 10.5 per 1,000 live births, sex ratio of male to female was 1.3:1 and the causes of neonatal death in order of frequency were prematurity (49.6%), respiratory diseases (24.0%) congenital anomalies (11.2%),birth injuries (8.0%), and unknown causes (7.2%). 3) The mean growth data at birth were as following: Weight: 3.43±0.43 kg in male, 3.29±0.41 kg in female Heigh: 52.03±2.81 cm in male, 51.53±2.31 cm in female Head circumference: 33.39±1.72cm in male, 32.70±1.57 cm in female Chest circumference: 32.49±1.61 cm in male, 32.41 ±1.48 cm in female 4) Among 11,857 neonates, 773 (6.5%) were under 37 wks and 534 (4.5%) were above 42 wks, and among 632 neonates of birth weight l,501~2,500 gm, 284 (44.9%) were under 37 wks and 344 (54.4%) were between 37 〜 42 wks. 5) The types of delivery in order of frequency were spontaneous vaginal delivery (72.0%), Cesarean section (23.7%), vacuum delivery (3.7%), breech delivery (0.5%), and forceps delivery (0.2%). Among neonates weighing 2,501 〜3,500gm, 0.2% were breech delivery, but among neonates weighing less than 2,500gm, the percentage of breech delivery was 4.6%. 6) Among all neonates, 18.8% had neonatal asphyxia (a 1-minute Apgar Score of 6 or less). In the spontaneous vaginal delivery group, the incidence was only 7.4%,but 49.5% and 80.7% in the Cesarean section and breech delivery groups, respectively. Only 13.9% of full-term neonates had asphyxia, but the percentage was 76.6% and 30.2% in the prematurity and postmaturity groups, respectively. 7) The incidence of twin babies was 294 (147 pairs), 2.5%; 1 pair per 80 neonates. Of all twins, 45. 6% were below 2,500 gm of birth weight and 35.7% were prematurity. 8) The incidence of neonatal jaundice was 61.8%. 9) Among all neonates, there were 4,816 (40.6%) high risk infants; and the order of frequency was Cesarean section (57.6%), prematurity (16.1%), meconium-stained (15.7%), birth weight 2,500 gm or less (14.8%), postmaturity (11.0%), etc.
Key Words: Neonate, Statistical, Observation

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