부모의 사회경제적 위치에 따른 자녀의 출생 성비 추이: 1981년부터 2004년까지 (Trends in Sex Ratio at Birth according to Parental Social Positions: Results from Vital Statistics Birth, 1981-2004 in Korea)

서지정보

· 발행기관 : 대한예방의학회
· 수록지 정보 : 예방의학회지 / 42권 / 2호 / 143 ~ 150페이지
· 저자명 : 천희란, 김일호, 강영호

초록

Objectives : South Korea has experienced unprecedented
ups and downs in the sex ratio at birth (SRB), which has
been a unique phenomenon in the last two decades.
However, little is known about socioeconomic factors that
influence the SRB. Employing the diffusion theory by Rogers,
this study was undertaken to examine the trends in social
variations in the SRB from 1981 to 2004 in Korea.
Methods : The data was taken from Vital Birth Statistics
for the period from 1981-2004. We computed the annual
male proportion of live births according to the parental
education (university, middle/high school, primary) and
occupation (non-manual, manual, others). Logistic
regression analysis was employed to estimate the odds
ratios of male birth according to social position for the
equidistant three time periods (1981-1984, 1991-1994, and
2001-2004).
Results : An increased SRB was detected among parents
with higher social position before the mid 1980s. Since
then, however, a greater SRB was found for the less
educated and manual jobholders. The inverse social
gradient for the SRB was most prominent in early 1990s,
but the gap has narrowed since the late 1990s. The
mother s socioeconomic position could be a sensitive
indicator of the social variations in the sex ratio at birth.
Conclusions : Changes in the relationship of parental
social position with the SRB were detected during the
1980-2004 in Korea. This Korean experience may well be
explained by diffusion theory, suggesting there have been
socioeconomic differences in the adoption and spread of
sex-detection technology.

영어초록

Objectives : South Korea has experienced unprecedented
ups and downs in the sex ratio at birth (SRB), which has
been a unique phenomenon in the last two decades.
However, little is known about socioeconomic factors that
influence the SRB. Employing the diffusion theory by Rogers,
this study was undertaken to examine the trends in social
variations in the SRB from 1981 to 2004 in Korea.
Methods : The data was taken from Vital Birth Statistics
for the period from 1981-2004. We computed the annual
male proportion of live births according to the parental
education (university, middle/high school, primary) and
occupation (non-manual, manual, others). Logistic
regression analysis was employed to estimate the odds
ratios of male birth according to social position for the
equidistant three time periods (1981-1984, 1991-1994, and
2001-2004).
Results : An increased SRB was detected among parents
with higher social position before the mid 1980s. Since
then, however, a greater SRB was found for the less
educated and manual jobholders. The inverse social
gradient for the SRB was most prominent in early 1990s,
but the gap has narrowed since the late 1990s. The
mother s socioeconomic position could be a sensitive
indicator of the social variations in the sex ratio at birth.
Conclusions : Changes in the relationship of parental
social position with the SRB were detected during the
1980-2004 in Korea. This Korean experience may well be
explained by diffusion theory, suggesting there have been
socioeconomic differences in the adoption and spread of
sex-detection technology.

참고자료

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