scholarly journals Nonlinear discrete-time hazard models for women's entry into marriage

2021 ◽  
pp. 1471082X2110626
Author(s):  
Heather L. Turner ◽  
Andy D. Batchelor ◽  
David Firth

We propose a hazard model for entry into marriage, based on a bell-shaped function to model the dependence on age. We demonstrate near-aliasing in an extension that estimates the support of the hazard and mitigate this via re-parameterization. Our proposed model parameterizes the maximum hazard and corresponding age, thereby facilitating more general models where these features depend on covariates. For data on women's marriages from the Living in Ireland Surveys 1994–2001, this approach captures a reduced propensity to marry over successive cohorts and an increasing delay in the timing of marriage with increasing education.

Complexity ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
A. Corberán-Vallet ◽  
F. J. Santonja ◽  
M. Jornet-Sanz ◽  
R.-J. Villanueva

We present a Bayesian stochastic susceptible-exposed-infectious-recovered model in discrete time to understand chickenpox transmission in the Valencian Community, Spain. During the last decades, different strategies have been introduced in the routine immunization program in order to reduce the impact of this disease, which remains a public health’s great concern. Under this scenario, a model capable of explaining closely the dynamics of chickenpox under the different vaccination strategies is of utter importance to assess their effectiveness. The proposed model takes into account both heterogeneous mixing of individuals in the population and the inherent stochasticity in the transmission of the disease. As shown in a comparative study, these assumptions are fundamental to describe properly the evolution of the disease. The Bayesian analysis of the model allows us to calculate the posterior distribution of the model parameters and the posterior predictive distribution of chickenpox incidence, which facilitates the computation of point forecasts and prediction intervals.


2010 ◽  
Vol 37 (4) ◽  
pp. 562-575 ◽  
Author(s):  
K. Goda ◽  
H. P. Hong ◽  
G. M. Atkinson

This study provides a preliminary assessment of the impact of new seismological information on the existing seismic hazard model, as implemented in the 2005 National building code of Canada (NBCC); this seismic hazard model was actually developed in the early 1990s, and thus there is significant new information available in the literature since then. A reassessment of seismic hazard is carried out by updating magnitude-recurrence relations based on the earthquake catalog up to the end of 2006, including conversion of all earthquake magnitudes to a homogenous moment magnitude scale. The recent ground-motion prediction equations, which update the knowledge base used in the 2005 NBCC, are also used. Focusing on Vancouver and Victoria, sensitivity analyses are carried out to investigate both individual and combined impacts of these updates on the uniform hazard spectra. The proposed model can be used as a guide to the direction in which future seismic hazard models for western Canada may move.


1995 ◽  
Vol 27 (6) ◽  
pp. 555-561 ◽  
Author(s):  
Steven B. Caudill ◽  
Jon M. Ford ◽  
Franklin G. Mixon ◽  
Ter Choa Peng

2013 ◽  
Vol 33 (2) ◽  
pp. 108-123 ◽  
Author(s):  
Ruey-Ching Hwang ◽  
Chih-Kang Chu

2009 ◽  
Vol 10 (6) ◽  
pp. 662-666 ◽  
Author(s):  
Matthew P. Buman ◽  
Britton W. Brewer ◽  
Allen E. Cornelius

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