Health Policy and Management (보건행정학회지)

Korean Academy of Health Policy and Management (한국보건행정학회)
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Socioeconomic Disparities in Pregnancy Outcome and Infant Mortality: Extremely Low Birth Weight and Very Low Birth Weight Infants in Korea, 1995-2010

극소 및 초극소 저체중출생아 출생과 사망의 사회적 불평등

  • Park, Hye-Jeong (Department of Information Statistics, Kangwon National University College of Natural Sciences) ;
  • Son, Mia (Department of Preventive Medicine, Kangwon National University School of Medicine)
  • 박혜정 (강원대학교 자연과학대학 정보통계학과) ;
  • 손미아 (강원대학교 의학전문대학원 예방의학교실)
  • Received : 2015.09.22
  • Accepted : 2015.07.22
  • Published : 2015.12.31
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Abstract

Background: This study investigates the relationship of socioeconomic status with adverse birth outcomes (low birth weight, preterm birth) and the relationship of socioeconomic status with infant mortality, using the birth cohort in Korea, 1995-2010. Methods: 8,648,035 births from National Statistics Offics, 1995-2010 were studied with respect to social variation in adverse birth outcomes and infant mortality in Korea. The effect of social inequality was examined against adverse birth outcomes and infant mortality using multivariate logistic regression after controlling for other covariates. Results: Social inequality were observed in adverse birth outcomes: low birth weight (LBW, 1,500-2,499 g), very LBW (1,000-1,499 g), and extremely LBW (500-999 g) as well as moderately preterm birth (PTB, 33-36 weeks), very PTB (28-32 weeks), extremely PTB (22-27 weeks), and infant mortality. The effect of social inequality was higher among moderately LBW (1,500-2,499 g) and PTB (33-36 weeks) than very or extremely LBW and PTB. Conclusion: The social inequality in adverse birth outcomes (low birth weight and preterm) and infant mortality existed and increased in Korea from 1995 to 2010. The effect of maternal education on adverse birth outcomes as well as infant mortality was apparent in the study results. Especially, social inequailiy in infant mortality was greater among the sub-normal births (low birth weight [1,500-2,499 g] or preterm birth [33-36 weeks]), which suggests, social interventions should aim at more among the subnormal births. This study suggest that tackling inequality in births as well as infant mortality should be focused on the social inequality itself.

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References

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