UPSI Digital Repository (UDRep) : Guest Mode

Search Results

3 record(s) found

The development of stochastic Sir and S(ImIf)R models for heterosexual HIV and AIDS disease mapping in Malaysia

Abstract

The purpose of this research is to develop an alternative method of relative risk estimation based on stochastic discrete time-space model. There are two main methods proposed which are stochastic discrete time-space SIR (Susceptible-Infected-Removed) model and S(ImIf)R (Susceptible-[Infected male]-[infected female]-Removed) according to gender for HIV and AIDS. Firstly, the deterministic compartmental SIR model that is suitable for the transmission of HIV and AIDS is discussed. This model then is adapted to develop corresponding discrete time-space stochastic SIR model. This is followed by the discussion of the alternative method of relative risk estimation based on the stochastic SIR model. Furthermore, applications of the common methods such as SMR and Poisson-gamma using HIV and AIDS data from Malaysia is also discussed in this thesis and the results are compared in tables, graphs and maps. Subsequently, discussion on modelling of S(ImIf)R model based on gender is discussed in the .....

Thesis Published 2016 1209 hits Available

Leptospirosis relative risk estimates based on continuous-time, discrete-space stochastic sir-l-si transmission model

Sufi Hafawati Ideris

Abstract

Leptospirosis is a re-emerging global disease that has become endemic in Malaysia. The transmissions usually occur between animals especially rats to rats and rats to humans. Since, it is an easily contractable disease that can be transmitted directly through contact with infected rats urine or indirectly from the environment such as via water and soil, it is very challenging to curb this disease from infecting humans. Poor understanding of the disease and lack of epidemiological data also made leptospirosis is difficult to control. To cope with this problem, a leptospirosis disease transmission model is developed to study the mechanism of leptospirosis disease spread over continuous-time that may help to predict future caused of an outbreak. This study aims to construct a continuous-time and discrete-space stochastic SIR-L-SI (Susceptible, Infected, Recovered Humans-Leptospires in the Environment-Susceptible, Infectious Rats) of leptospirosis disease transmission to estimate the risk .....

Article Published 2024 640 hits Available

Comparison of HIV and Aids diseases mapping in Malaysia based on standardized Morbidity Ratio and Poisson-Gamma model

Sufi Hafawati Ideris

Abstract

Human Immunodeficiency Virus (HIV) is the virus that causes chronic and life-threatening condition called Acquired Immune Deficiency Syndrome (AIDS). There is no currently available vaccine or cure for the disease. Therefore, to control the epidemic from continuing to spread will entirely depend on the control, treatment and prevention strategies. Disease maps have been recognized as one of the important tools in controlling diseases. Better statistical models used to estimate the relative risk will subsequently produce better disease risk maps. Therefore, the aim of this paper is to estimate the relative risk for HIV and AIDS in Malaysia based on the commonest method used in the study of disease mapping which are the Standardized Morbidity Ratio (SMR) and Poisson-Gamma models. In this paper, a review of the SMR method will be given and then will be applied to HIV and AIDS data in Malaysia. This application of SMR is then extended to the next method which is the Poisson-Gamma model and.....

Article Published 2015 118 hits Available

Search Results

Filter

Specific Period

Recently Accessed