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Journal of Biometrics & Biostatistics

ISSN: 2155-6180

Open Access

Volume 9, Issue 1 (2018)

Research Article Pages: 1 - 4

Estimating and Testing the Effect of Delayed Marriage on Fertility

Uzuke CA and Oyeka ICA

DOI: 10.4172/2155-6180.1000387

A statistical model which can be used to estimate the loss of fertility due to delayed marriage after the age at menarche was proposed. This model made use of a cohort of women who had their menarche at age 13 years. The expected number of years of spinsterhood was also estimated as e(x). The result showed that a spinster who had her menarche at age 13 years and delayed her marriage on the average 12 years is going to lose on the average 2 children.

Research Article Pages: 1 - 3

Interpolation-Collocation Method of Solution for Solving Poisson Equation

Sunday Babuba

DOI: 10.4172/2155-6180.1000388

In this paper, we consider the system of algebraic equations arising from the discretization of elliptic partial differential equation with respect to x and y axes. To compute the solution of the resulting equations we use the new method to solve various elliptic equations. We study the numerical accuracy of the method. The numerical results have shown that the method provided exact result depending on the particular equation on which the scheme is applied.

Research Article Pages: 1 - 7

The Poisson Generalized Birnbaum-Saunders Cure Model and Application in Breast Cancer Data

Mojtaba Meshkat, Ahmad Reza Baghestani and Farid Zayeri

DOI: 10.4172/2155-6180.1000389

The cure rate survival models are generally used to model lifetime data with long term survivors. We assumes the number of competing causes of the event of interest has the Poisson distribution and the time to the event of interest follows the Generalized Birnbaum-Saunders distribution. The Poisson GB-S distribution has been defined and useful representations for its density function have been presented which facilitates obtaining some mathematical properties. The parameters of the model with cure rate have been estimated using the maximum likelihood method. For different sample sizes and censoring percentages, several simulations have been performed and a real data set from the medical area has been analyzed.

Google Scholar citation report
Citations: 3254

Journal of Biometrics & Biostatistics received 3254 citations as per Google Scholar report

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