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KMID : 0379919960200010029
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Journal of The Korea Socity of Health Informatics and Statistics
1996 Volume.20 No. 1 p.29 ~ p.34
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Secular Trends of Sex Ratio at Birth by Regions in Korea
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Abstract
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The objective of this study was to analyze the trend of sex ratio at birth by regions from the vitae statistics of National Statistical Offices during 15 years(1980-1994). The sex ratios in total of registered birth(1980-94) were 114.06 in kyoungsang region, 109.60 in Seoul, 108.86 in Kyonggi 107.79 in kangwon, 110.58 in chungchong and 108.32 in Cholla.
The regression analysis showed a statistically significant linear trend in all regions(P＜0.001) : Sex ratio = a ＋ b1(time) ＋ b2(January) ＋ .. ＋ b11(November). The slope of sex ratio trends during the period was higher in Kyoungsang region and lower in Cholla region. The variation between yearly mean sex ratio and calendar month sex ratio showed a slight decline from 1980 to 1994. The variation of those was higher in Kangwon and lower in Seoul.
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KEYWORD
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