| Effect of Delayed First Childbearing on Low Birth Weight and Pre-term Birth |
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박정한, 박순우, 이주영, 박성준 |
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대구가톨릭대학교 |
| 늦은 첫 임신이 저출생체중 및 조산에 미치는 영향 |
|
박정한, 박순우, 이주영, 박성준 |
|
대구가톨릭대학교 |
|
|
| Abstract |
Objectives
: This study was conducted to examine the effect of delayed childbearing on
pregnancy outcome among nulliparous women.
Methods
: Study subjects were nulliparous women(N=2,957) of 20 years old or over, who
had delivered single birth at one of the hospitals in Pohang city and Chonan city from March
1 to August 31, 2000. Outcome measures were rates of very low birth weight(＜1,500gm),
low birth weight(＜2,500gm), very preterm delivery(＜33 weeks), and preterm
delivery(＜37 weeks). Odds ratios were calculated adjusted for demographic characteristics
and medical conditions.
Results
: Women aged 30 years old or over were significantly more likely to have
cesarean section, chronic medical conditions, specific antepartum, and intrapartum
complications. Compared with women aged 20 to 29 years, women aged 30 to 34 years had
significantly higher adjusted odds ratios(ORs) of very preterm birth(OR=2.3, 95%
confidence interval 1.3∼4.3), preterm birth(OR=1.6, 95% confidence interval 1.1∼2.3).
Among women aged 35 years old and older, the adjusted OR was significantly higher for
very preterm birth(OR=5.2, 95% confidence interval 2.1∼12.7), preterm birth(OR=1.9,
95% confidence interval 1.0∼3.9). However, there was no evidence that women between
30~34 years old or those of 35 years old and older have an increased risk of having a low birth weight and very low birth weight infant.
Conclusions
: These findings suggest that delayed childbearing increases the risk of very preterm and
preterm delivery, while it does not increase the risk of having a very low birth weight or low birth weight
infant. |
| Key Words:
delayed child bearing, low birth weight, pre-term birth |
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