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http://dx.doi.org/10.5351/KJAS.2019.32.2.229

A study on forecasting provinces-specific fertility for Korea  

Kim, Soon-Young (Statistical Research Institute, Statistics Korea)
Oh, Jinho (School of Basic Sciences, College of Engineering, Hanbat National University)
Publication Information
The Korean Journal of Applied Statistics / v.32, no.2, 2019 , pp. 229-263 More about this Journal
Abstract
The Korean fertility rate has been declining rapidly since 2000 with the fertility rate among provinces following a uniform tendency. In particular, the province-specific fertility rate is an essential tool for local governments to prepare local policies for low fertility aging policy, education and welfare policies. However, there is limitation on how to reflect different trends on the province-specific fertility rate because the KOSTAT's (2017) province-specific fertility rate projection estimates information use the national average birth rate date of vital statistics for the last 10 years (5 years). In this study, we propose an improvement plan that simultaneously considers important stable pattern maintenance and provincial fertility rate differentiation for an annual birth rate estimation. The method proposed in this study (proposal 1 and 2) can reflect birth rate changes from past to present and national and provincial differences by age that use time series data of the annual fertility rate. Proposal 3 also reflects the unique fertility rate trend from the past to the present by age according to province regardless of the relationship with the national trend. Therefore, it is preferable to use a relationship to the national rate when predicting the birth rate, as in proposals 1 and 2 because the national and the provincial fertility rate pattern are similar. These proposals show improved stability in terms of age-specific fertility rates.
Keywords
low fertility; aging; province-specific fertility rate; age-specific fertility rate;
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Times Cited By KSCI : 1  (Citation Analysis)
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