Odstępy inter genetyczne w przekrojowej analizie płodności
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Date
1985
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Wydział Prawa i Administracji UAM
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Intergenetic intervals in the cross-section analysis of fertility
Abstract
Real birth intervals are traditionally examined only in the longitudinal
approach and in the relation to cohorts and generations. Nevertheless it seems
justified to make sometimes several queries:1) what is the time lag between the birth in a given calendar year a
of a child of the p-sequence and the previous birth p— l,
2) how much time must pass between the birth p-sequence child na given
calendar year a and the p+1 child born later.
Such an exposition of the problem seems interesting from at least one point
of view: a possibility of analysing the effect of various historical events, related
closely to the defined time span, on the length of real birth intervals. Such
historical events are war, economic crisis, epidemic of pest, new regulation of
abortion. All those events can prolong or shorten the type 1 and 2 intervals in
the succeeding calendar years.
Currently, frome one year to another, only the type 1 intervals can be traced,
while the calculation of the type 2 intervals takes theoretically approximately
30 years, untili the youngest of generations will complete its period of fertility.
In practice that period can be substantially shortened. Those problems are not
encountered in relation to the deceased populations reconstructed on the grounds
of parish registers.
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Digitalizacja i deponowanie archiwalnych zeszytów RPEiS sfinansowane przez MNiSW w ramach realizacji umowy nr 541/P-DUN/2016
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Citation
Ruch Prawniczy, Ekonomiczny i Socjologiczny 47, 1985, z. 3, s. 277-287