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Wyszukujesz frazę "survival analysis" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Trwałość pierwszych związków w kohortach urodzeniowych 1951-1960 oraz 1961-1970
Ability of first relationships for women from birth cohorts 1951–1960 and 1961–1970
Autorzy:
Borucka, Jadwiga
Romaniuk, Joanna
Frątczak, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/418312.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
demography
relationships stability
survival analysis
Opis:
A family, as the basic social unit has been a subject to statisticians' and demographists' research for many years. Recently, the marriage institution has changed not only regarding the age at which people marry and the number of children they have but also as concerns its stability. At the same time, alternative forms of family appeared, mostly cohabitations. Such a variety complicates analysis of functioning and stability of a family. It becomes even more complicated regarding the fact that cohabitation often precedes marriage thus it needs to be decided whether it should be analyzed independently or rather in relation to the marriage that comes next. However, increasing divorce rate as well as cohabitations which are more common lead to the question on the stability of marriages and informal relationships as well as other changes observed recently in this area. The main objective of the study is to analyze and compare the stability of first relationships for women from birth cohorts 1951-1960 and 1961-1970.Cohort analysis makes it possible to present the changes in marital stability that have been observed for women from demographic decline cohort (1961-1970) as compared to women from demographic bulge cohort (1951-1960). Analyzed data comes from the questionnaire D (Fertility in Poland) of the National Population and Housing Census 2002.
Źródło:
Studia Demograficzne; 2012, 161, 1; 103-127
0039-3134
Pojawia się w:
Studia Demograficzne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Extensions of cox model for non-proportional hazards purpose
Autorzy:
Borucka, Jadwiga
Powiązania:
https://bibliotekanauki.pl/articles/425219.pdf
Data publikacji:
2014
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
Cox model
survival analysis
non-proportional hazards
Opis:
Cox proportional hazard model is one of the most common methods used in time to event analysis. The idea of the model is to define a hazard level as a dependent variable which is explained by the time-related component (so-called baseline hazard) and the covariates- related component. The model is based on several restrictive assumptions one of which is the assumption of proportional hazard. However, if this assumption is violated, this does not necessarily prevent an analyst from using Cox model. The current paper presents two ways of model modification in the case of non-proportional hazards: introducing interactions of selected covariates with function of time and stratification model. Calculations performed give the evidence that both methods result in better model fit as compared with the original model. Additionally, they allow interpreting the parameters estimates more precisely, taking into account the effect of the covariate at the hazard level that is changing over time. The choice of the appropriate method of tied events handling however is not straightforward and should be adjusted to the particular analysis purpose.
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2014, 3(45); 85-101
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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