The main objective of this study is to introduce an alternative method to estimate the relative risk for acute and chronic hepatitis B based on the age group. This study considers the transmission of the disease in the S-(I(C) I(A))-R stochastic model and used it as the equation for relative risk. In this study, the SIIR model related with hepatitis B have been revised and expanded to formed an the alternative S-(I(C) I(A))-R model according to the age structure. Model S-(I(C) I(A))-R are based on the age structure proposed used to estimate the relative risk for acute and chronic hepatitis B in Malaysia. Results are compared with the general method used to estimate the relative risk by using SMR and Poisson-gamma model. Results of the analysis of data from Malaysia showed that, for acute hepatitis B, children identified as having a higher risk compared to adults. While for chronic hepatitis B, adults identified as having a higher risk compared to children. This decision is based on the.....

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Disease mapping is used to display the geographical distribution of disease occurrence. The focus of a disease mapping is to estimate the true relative risk of a disease and to display the disease risk on map so that further attention can be made. In Malaysia, there are no specific methods that are used to estimate the relative risk of Acute and Chronic Hepatitis B. The areas that are reported to have high number of cases are spotted to have a high risk area for the disease, whereas the area with low number of cases spotted as low risk area for disease. Therefore, the main objective of this research is to find a better method to estimate the relative risk of Acute and Chronic Hepatitis B in Malaysia. This study will used the commonest methods that are the Standardized Morbidity Ratio (SMR) and Poisson-gamma model based on count data of Acute and Chronic Hepatitis B in Malaysia. For the Poissongamma model, the data are analysed using WinBUGS software. In this research, the results of re.....

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