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KMID : 0353019750120010081
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Korean Journal of Public Health
1975 Volume.12 No. 1 p.81 ~ p.89
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Relationship between Newborn Infant´s Birth Weight and Maternal Factors
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Abstract
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This study was made on 2,722 newborn infants delivered at the Seoul National University Hospital from Jan.Ⅰ1971 to Dec, 31, 1973 to figure out any relations between newborn infant´s birth weight and maternal factors such as mother´s age, gestational period, abortion, parity, history of low-birth-weight infant, and birth order of newborn infant.
The results were summarized a follows:
1. An average newborn infant weighed 3.28㎏ (boy: 3.33㎏, girl: 3.23㎏).
Incidence of low-birth-weight infant was 10.5% (boy: 9.4%, girl: 11.6%).
Incidence of excessive-weight infant was 3.3% (boy: 4.5%, girl: 2.1%).
2. In the relationship between parity and newborn infant´s birth weight, multipara was heavier than primipara, and in incidence of low-birth-weight infant and excessive-weight infant, multipara was higher than primipara.
3. In the relationship between mother´s age and newborn infant´s birth weight, the lowest incidence of low birth weight infant was in, 25∼29 years old group, and the highest incidence of excessive-in-weight infant was in the 40 or over years-old group.
4. In the relationship between birth order and birth weight of newborn infant, the lowest incidence of low-birth-weight infant was the 2nd group (expect the 5th group), and the highest incidence of excessive-in-weight infant was the 5th group. The 3rd group had the heaviest average birth weight(except the 6th group).
5. In the relationship between gestational period and birth weight of newborn infant, the average incidence of low-birth-weight infant was 78.4% in the 37weeks or below and was 3.8% in the 38weeks or over.
Incidence of excessive-in-weight infant was higher as gestational period increases after the 37 weeks.
6. In the relationship between history of abortion and low-birth-weight infant, and newborn infant´s birth weight, incidence of low-birth-weight infant and excessive-in-weight infant was higher as frequency increases, and that had high statistical significance(p<0.005).
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