Visualizing the Distortions of Statistical Maps Caused by the Increase in Unreported Cases in Japan’s Population Census
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- Ryoko YAMAMOTO
- 特定非営利活動法人traNeco代表
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- Tomoya HANIBUCHI
- 東北大学大学院環境科学研究科准教授
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- Tomoki NAKAYA
- 東北大学大学院環境科学研究科教授
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- Masakazu YAMAUCHI
- 早稲田大学教育・総合科学学術院准教授
Bibliographic Information
- Other Title
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- 国勢調査の「不詳」増加がもたらす統計地図の歪みの可視化
Abstract
<p>The purpose of this study was to visualize how regional differences observed from the population census deviate from their “true” forms due to an increase in unreported (missing) cases by considering multiple scenarios in which there was an increase in the number of unreported cases in the census. For municipalities in the Tokyo metropolitan area, we estimated the percentages of unmarried people and those with short-term residence from the 2015 Population Census for different scenarios of unreported rates using 1) proportional distribution by age-group and 2) weighted distribution based on the ratio of unreported rates among attributes. In both indicators, the results showed that there were clear regional differences with high and low percentages in urban centers and suburban areas, respectively, in a scenario where the unreported rate became zero. However, when we examined the maps estimated under scenarios where the unreported rates increased by 1.5- or 2-fold, such regional differences appeared to be reduced or eliminated. This means that further increases in the number of unreported cases will increase the probability of spurious regional differences in the future. Careful interpretation of the results and use of statistically corrected data are required when analyzing the census data for items and regions with high unreported rates.</p>
Journal
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- E-journal GEO
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E-journal GEO 16 (1), 1-14, 2021
The Association of Japanese Geographers
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Details 詳細情報について
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- CRID
- 1390568456355632768
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- NII Article ID
- 130007975739
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- ISSN
- 18808107
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed