Demografie, revue pro výzkum populačního vývoje - č. 4/2021

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Jaroslav Kraus
Statistical Disclosure Control Methods for Harmonised Protection of Census Data: a Grid Case

Demografie, 63(4): 199–215


The 2011 Population and Housing Census in the Czech Republic was accompanied by a significant change in the technology used to prepare course of the fieldwork, along with changes in how the data are processed and how the outputs are disseminated. Grids are regular polygon networks that divide the territory of country in a grid-like way/pattern into equally large territorial units, to which aggregate statistical data are assigned. The disadvantage of grids is that these are territorially small units that are often minimally populated. This mainly has implications for the protection of individual data, which is associated with statistical disclosure control (SDC).

The research question addressed in this paper is whether data protection (perturbation methods) leads to a change in the characteristics of the file either in terms of statistics of the whole file (i.e. for all grids) or in terms of spatial statistics, which indicate the spatial distribution of the analysed phenomenon. Two possible solutions to the issue of grid data protection are discussed. One comes from the Statistical Office of the European Communities (Eurostat) and the other from Cantabular, which is a product of the Sensible Code Company (SCC) based in Belfast.

According to the Cantabular methodology, one variant was processed, while according to the Eurostat methodology, two variants were calculated, which differ by the parameter settings for maximum noise D and the variance of noise V. The results of the descriptive statistics show a difference in absolute differences when Cantabular and Europstat solutions are compared. In the case of other statistics, the results are fully comparable. This paper is devoted to one specific type of census output. The question is to what extent these results are relevant for other types of census outputs. They differ fundamentally in the number of dimensions (grids have only two dimensions). It would therefore be appropriate to use SDC procedures that allow greater flexibility in defining SDC parameters.


population and housing census, statistical disclosure control (SDC), grids

Hana M. Broulíková – M. Kučera – Markéta Arltová
The Timely Diagnosis and Treatment of Alzheimer’s Disease: Microsimulating Cost-Effectiveness in the Czech Republic

Demografie, 63(4): 216–225


Using a microsimulation model, this study evaluates the cost-effectiveness of a hypothetical policy that would increase diagnosis and treatment availability for people at an early stage of Alzheimer’s disease in the Czech Republic. If widely available, timely diagnosis and treatment would represent a dominant strategy bringing net benefit of EUR 13,751 per lifetime of each person living with this disease.


Alzheimer’s disease, cost-effectiveness, timely diagnosis, Czech Republic, dementia

The 13th Conference of Young Demographers

Conference RELIK 2021

Andrey Ugarte Montero – Onofre Alves Simões
Life Expectancy Improvements by Age, Class, and Mortality Chapter in France, Czechia, and the United States

Demografie, 63(4): 228–245


Using the decomposition method, this article examines the dynamics of life expectancy. Three developed countries with relevant differences, Czechia, France, and the United States, were chosen for analysis in order to highlight similarities and differences. The analysis covers more than 40 years, 12 age groups, and 20 mortality chapters. The results reveal a pattern: first, mortality at birth improves; then the survival of lives under 65 increases; finally, improvements come from extending the life of seniors.


life expectancy, decomposition method, mortality chapters, France, Czechia, United States

David Morávek – Jana Koukalová
Population Development in Czechia in 2020

Demografie, 63(4): 246–261


The population development of Czechia in 2020 was significantly affected by the COVID-19 epidemic. Epidemiological measures or the pandemic itself were reflected in almost all monitored demographic processes, and in many cases long-term trends were interrupted. In addition, existing minimums or maximums were rewritten within the period of the last ten years. The article focuses on the main demographic processes, namely births, deaths, marriages, divorces and migration. The beginning of the examined period is the year 2011, in which the census took place, and then the following years, especially the period 2015–2020.


demographic development, population, age structure, nuptiality, divorce, fertility, mortality, migration, Czechia

Radek Havel
Population and Vital Statistics of the Czech Republic 2020
Abstracts of Articles Published in the Journal Demografie in 2021 (Nos. 1–3) PDF
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