우리나라 월별 출생 빈도의 변동에 관한 연구, 2000-2012
Monthly Variation of Births in Korea, 2000-2012
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참고문헌
키워드
초록
Objectives: The objective of this study was to analyze the monthly variation of birth by year of birth (2000-2012), birth order and marital status. Methods: The analysis was based on birth data of Korea (634,501 births in 2000, 435,301 births in 2005, 470,171 births in 2010 and 484,550 births in 2012). As the percent distribution in monthly number of births appears to be influenced by the different number of day of month, we used the index of birth occurrence (IBO) for analyzing of monthly variation in birth. IBO is defined as a ratio of the average number of births per day of the month to the average number of births per day of the year, with the base set at 100. Results: The monthly distribution of births was bimodal, with a major peak extending from January to March, a minor peak from October to September, and a major trough in December. During the 2000-2012, IBO was highest for January (111), and lowest for December (89). The IBO in first birth order was highest for January (112), and lowest for June (89), and the variations of IBO in first birth order showed wide fluctuation as compared with the IBO of non-first birth order. The monthly pattern of IBO for extramarital births showed lower fluctuation from a peak of 107 to a trough of 92 than for the marital births. The pattern of the IBO for first births, showed a major peak in January-February (wedding in April-May: index of marriage occurrence: 126-127) and a minor peak in October-November (wedding in September-December: 126-143). The monthly distribution of first births appeared to be influenced to some extent by a monthly pattern of marriage. Conclusions: There was a bimodal pattern in birth seasonality: a major peak in January-March, a trough in June-July, a minor peak in October-September, and a trough around December.
Abstract
Objectives: The objective of this study was to analyze the monthly variation of birth by year of birth (2000-2012), birth order and marital status. Methods: The analysis was based on birth data of Korea (634,501 births in 2000, 435,301 births in 2005, 470,171 births in 2010 and 484,550 births in 2012). As the percent distribution in monthly number of births appears to be influenced by the different number of day of month, we used the index of birth occurrence (IBO) for analyzing of monthly variation in birth. IBO is defined as a ratio of the average number of births per day of the month to the average number of births per day of the year, with the base set at 100. Results: The monthly distribution of births was bimodal, with a major peak extending from January to March, a minor peak from October to September, and a major trough in December. During the 2000-2012, IBO was highest for January (111), and lowest for December (89). The IBO in first birth order was highest for January (112), and lowest for June (89), and the variations of IBO in first birth order showed wide fluctuation as compared with the IBO of non-first birth order. The monthly pattern of IBO for extramarital births showed lower fluctuation from a peak of 107 to a trough of 92 than for the marital births. The pattern of the IBO for first births, showed a major peak in January-February (wedding in April-May: index of marriage occurrence: 126-127) and a minor peak in October-November (wedding in September-December: 126-143). The monthly distribution of first births appeared to be influenced to some extent by a monthly pattern of marriage. Conclusions: There was a bimodal pattern in birth seasonality: a major peak in January-March, a trough in June-July, a minor peak in October-September, and a trough around December.
참고문헌 (22)
- James WH, "Seasonal variation in human births", Journal of Biosocial Science, 22(1), pp.113~119 (1990)
- Rojansky N, "Seasonality in human reproduction: an update", Human Reproduction, 7(6), pp.735~745 (1992)
- Nonaka K, "Effect of maternal birth season on birth seasonality in the Canadian population during the seventeenth and eighteenth centuries", Human Biology, 62(5), pp.701~717 (1990)
- Maisuda S, "Seasonal variation of mean birth weight and births in Nagano prefecture", Japanese Journal of Hygiene, 47(2), pp.609~617 (1992)
- Greksa LP, "Birth seasonality in the old order Amish", Journal of Biosocial Science, 36(3), pp.299~315 (2004)
- Stupp PW, "Seasonal difference in pregnancy outcome; United States, 1971-1989", Annals of the New York Academy of Sciences, 709, pp.46~54 (1994)
- Takahashi M, "The effect of determining birthdays by social factors such as maternal preference on the distribution in the number of daily live births", Japanese Journal of Public Health, 61(1), pp.16~29 (2014)
- Ytterstad E, "Daily number of births in Norway 1989-93. Variations across months, day of week, phase of the moon and changes in leave entitlements", Tidsskrift for den Norske Laegeforening, 117(8), pp.1098~1101 (1997)
- Holland B, "Seasonality of births: stability and change in a developing country", Human Biology, 61(4), pp.591~598 (1989)
- Park SH, "Secular trends of sex ratio at birth in Korea", Korea Journal of Population Studies, 19(2), pp.5~18 (1996)
- Park SH, "Study on month of birth based on 1988 Korean vital statistics", Korean Journal of Perinatology, 12(3), pp.290~294 (2001)
- Halli SS, "The seasonality of births in Canada", Journal of Biosocial Science, 21(3), pp.321~327 (1989)
- Park SH, "Study on daily and monthly pattern of birth in 2003 Korean vital statistics", Journal of Reproductive Medicine and Population, 18, pp.114~119 (2005)
- "Micro Data Service System" (2014)[URL]
- Lam DA, "Global pattern of seasonal variation in human fertility", Annals of the New York Academy of Sciences, 709, pp.9~28 (1994)
- Curtin SC, "Trends in attendant, place, and timing of births, and in use of obstetric intervention: United States, 1989-97", National Vital Statistics Report, 47(27), pp.1~12 (1999)
- Martin JA, "Births: final data for 2007", National Vital Statistics Report, 58(24), pp.1~85 (2010)
- Athanassenas GA, "Seasonal variation of birth in Greece. Temporal changes and regional differences over a 24 years period", Chronobiologia, 12(4), pp.351~357 (1985)
- Eriksson AW, "Seasonal variation of livebirths, stillbirths, extramarital births and twin maternities in Switzerland", Twin Research, 3(4), pp.189~201 (2000)
- Lee SJ, "Seasonal patterns and preterm birth: a systematic review of the literature and an analysis in a London-based cohort", An International Journal of Obstetrics & Gynaecology, 113(11), pp.1280~1288 (2006)
- Levy BR, "Influence of Valentine’s Day and Halloween on birth timing", Social Science Medicine, 73(8), pp.1246~1248 (2011)
- Chiavegatto Filho AD, "Caesarean sections and the choice of date of birth in the Municipality of São Paulo, Brazil", Ciencia Saude Coletiva, 18(8), pp.2413~2420 (2013)