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EVALUATION OF THE 2003-BASED POPULATION FORECAST OF THE CENTRAL STATISTICAL OFFICE FROM THE POINT OF VIEW OF THE WARSAW AGGLOMERATION

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Kupiszewski M., Bijak J.

Studia Demograficzne

2006

issue 1(149)

68-81

Demographic forecasts constitute an important information input for economic and social policies, as well as for a spatial organisation, which areas are crucial from the point of view of the Warsaw agglomeration. The paper aims at evaluating the recent population forecast of the Central Statistical Office for the period 2003-2030 in the context of the expected population changes of the capital city. The analysis concentrates on three elements of a forecast: the demographic data, the model of population dynamics, and assumptions on particular components of population change. Regarding data, it is argued that the current system of population statistics in Poland does not provide credible information on population stocks and structures, which causes a bias in the estimation of intensity of demographic events. As the main problem comes from the incompatibility of definitions, appropriate changes in legislation seem to be necessary. With respect to the model, the forecast should be prepared using a multi-regional model rather than the cohort-component method. The assumptions underestimate the role of migration (especially internal immigration to and international emigration from Warsaw) in the demographic development of the city. Hence, authors are of the opinion that the forecasted decline of the Warsaw population from the (underestimated) 1,688 thousand in 2002 to 1,532 thousand in 2030 is not realistic. It is argued that a population forecast for Warsaw should consider the specificity of the capital city and the whole agglomeration, which is an important migration destination for labour force from other regions of Poland. According to international standards, such a forecast should be made for the resident population. The 2003-based population forecast of the Central Statistical Office does not meet these criteria and thus can be hardly used for socio-economic policy purposes, spatial organisation, and development plans for the city and the Warsaw agglomeration.

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1 Studia Demograficzne

1 Bijak J.

1 Kupiszewski M.

1 2006

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EVALUATION OF THE 2003-BASED POPULATION FORECAST OF THE CENTRAL STATISTICAL OFFICE FROM THE POINT OF VIEW OF THE WARSAW AGGLOMERATION