{"title":"Are the birthdates of our ancestors real? Date of birth misregistration in twentieth-century Poland.","authors":"Jacek Cypryjański","doi":"10.1080/00324728.2022.2034920","DOIUrl":null,"url":null,"abstract":"<p><p>This study aimed to explore the phenomenon of birthdate misregistration, using birth data from 45,226,875 Polish citizens, that is, all those born 1900-2000 and registered in Poland's Universal Electronic System for Registration of the Population (PESEL). I transformed the data into a daily series of births, detrended by dividing each value by the daily average for the relevant year. Next, I selected the dates with the highest deviations based on the coefficients of the linear regression model with dummy variables. Finally, I estimated the size of the phenomenon in subsequent years by comparing the numbers of births on selected dates to their expected values. This paper is the first to document the specificity, scale, duration, and probable causes of birthdate misregistration in Poland in the twentieth century.</p>","PeriodicalId":47814,"journal":{"name":"Population Studies-A Journal of Demography","volume":null,"pages":null},"PeriodicalIF":2.5000,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Population Studies-A Journal of Demography","FirstCategoryId":"90","ListUrlMain":"https://doi.org/10.1080/00324728.2022.2034920","RegionNum":2,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2022/2/19 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"DEMOGRAPHY","Score":null,"Total":0}
引用次数: 0
Abstract
This study aimed to explore the phenomenon of birthdate misregistration, using birth data from 45,226,875 Polish citizens, that is, all those born 1900-2000 and registered in Poland's Universal Electronic System for Registration of the Population (PESEL). I transformed the data into a daily series of births, detrended by dividing each value by the daily average for the relevant year. Next, I selected the dates with the highest deviations based on the coefficients of the linear regression model with dummy variables. Finally, I estimated the size of the phenomenon in subsequent years by comparing the numbers of births on selected dates to their expected values. This paper is the first to document the specificity, scale, duration, and probable causes of birthdate misregistration in Poland in the twentieth century.
期刊介绍：
For over half a century, Population Studies has reported significant advances in methods of demographic analysis, conceptual and mathematical theories of demographic dynamics and behaviour, and the use of these theories and methods to extend scientific knowledge and to inform policy and practice. The Journal"s coverage of this field is comprehensive: applications in developed and developing countries; historical and contemporary studies; quantitative and qualitative studies; analytical essays and reviews. The subjects of papers range from classical concerns, such as the determinants and consequences of population change, to such topics as family demography and evolutionary and genetic influences on demographic behaviour.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
