Discrete survival models with flexible link functions for age at first marriage among woman in Swaziland

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dc.contributor.advisorBere, A.
dc.contributor.advisorSigauke, C.
dc.contributor.authorNevhungoni, Thambeleni Portia
dc.date2018
dc.date.accessioned2019-06-05T12:39:31Z
dc.date.available2019-06-05T12:39:31Z
dc.date.issued2019-05-18
dc.descriptionM.Sc.(Statistics)en_US
dc.descriptionDepartment of Statistics
dc.description.abstractThis study explores the use of exible link functions in discrete survival models through a simulation study and an application to the Swaziland Demographic and Health Survey (SDHS) data. The objective of the research study is to perform simulation exercises in order to compare the e ectiveness of di erent families of link functions and to construct a discrete multilevel survival model for age at rst marriage among women in Swaziland using a exible link function. The Pareto hazard model, Pregibon and Gosset families of link functions were considered in models with and without unobserved heterogeneity. The Pareto model where the family parameter is estimated from the data was found to outperform the other models, followed by the Pregibon and the Gosset family of link functions. The results from both simulation study and real data analysis of the SDHS data illustrated that, misspecication of the link function causes bias on the estimation of results. This demonstrates the importance of choosing the right link. The ndings of this study reveal that women who are highly educated, stay in the Manzini and Shiselweni region, those who reside in urban areas were more likely to marry later compared to their counterparts in Swaziland. The results also reveal that the proportion of early rst marriages is declining since the di erence among birth cohorts is found to be very high, with women of younger cohorts getting married later compared to older women.en_US
dc.description.sponsorshipNRFen_US
dc.format.extent1 online resource (xii, 141 leaves : Illustrations (Some color)
dc.identifier.apacitationNevhungoni, T. P. (2019). <i>Discrete survival models with flexible link functions for age at first marriage among woman in Swaziland</i>. (). . Retrieved from http://hdl.handle.net/11602/1346en_ZA
dc.identifier.chicagocitationNevhungoni, Thambeleni Portia. <i>"Discrete survival models with flexible link functions for age at first marriage among woman in Swaziland."</i> ., , 2019. http://hdl.handle.net/11602/1346en_ZA
dc.identifier.citationNevhungoni, Thambeleni Portia (2018) Discrete survival models with flexible link functions for age at first marriage among woman in Swaziland, University of Venda, South Africa.<http://hdl.handle.net/11602/1346>.
dc.identifier.ris TY - Dissertation AU - Nevhungoni, Thambeleni Portia AB - This study explores the use of exible link functions in discrete survival models through a simulation study and an application to the Swaziland Demographic and Health Survey (SDHS) data. The objective of the research study is to perform simulation exercises in order to compare the e ectiveness of di erent families of link functions and to construct a discrete multilevel survival model for age at rst marriage among women in Swaziland using a exible link function. The Pareto hazard model, Pregibon and Gosset families of link functions were considered in models with and without unobserved heterogeneity. The Pareto model where the family parameter is estimated from the data was found to outperform the other models, followed by the Pregibon and the Gosset family of link functions. The results from both simulation study and real data analysis of the SDHS data illustrated that, misspecication of the link function causes bias on the estimation of results. This demonstrates the importance of choosing the right link. The ndings of this study reveal that women who are highly educated, stay in the Manzini and Shiselweni region, those who reside in urban areas were more likely to marry later compared to their counterparts in Swaziland. The results also reveal that the proportion of early rst marriages is declining since the di erence among birth cohorts is found to be very high, with women of younger cohorts getting married later compared to older women. DA - 2019-05-18 DB - ResearchSpace DP - Univen KW - Flexible families of link functions KW - Discrete survival models KW - Heterogeneity KW - Simulation study KW - Misspeciation of the link function LK - https://univendspace.univen.ac.za PY - 2019 T1 - Discrete survival models with flexible link functions for age at first marriage among woman in Swaziland TI - Discrete survival models with flexible link functions for age at first marriage among woman in Swaziland UR - http://hdl.handle.net/11602/1346 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11602/1346
dc.identifier.vancouvercitationNevhungoni TP. Discrete survival models with flexible link functions for age at first marriage among woman in Swaziland. []. , 2019 [cited yyyy month dd]. Available from: http://hdl.handle.net/11602/1346en_ZA
dc.language.isoenen_US
dc.rightsUniversity of Venda
dc.subjectFlexible families of link functionsen_US
dc.subjectDiscrete survival modelsen_US
dc.subjectUCTDen_ZA
dc.subjectHeterogeneityen_US
dc.subjectSimulation studyen_US
dc.subjectMisspeciation of the link functionen_US
dc.subject.ddc306.81096887
dc.subject.lcshWomen -- Swaziland
dc.subject.lcshMarriage -- Swaziland
dc.subject.lcshMarried people -- Swaziland
dc.subject.lcshMarried women -- Swaziland
dc.titleDiscrete survival models with flexible link functions for age at first marriage among woman in Swazilanden_US
dc.typeDissertationen_US
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