Browsing by Author "Yusoff Y.S."
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Publication A review on myocardial infarction and stroke risk factors in selected countries in Asia(American Scientific Publishers, 2017) ;Halim M.H.A. ;Yusoff Y.S. ;Yusuf M.M. ;Faculty of Science and TechnologyUniversiti Sains Islam Malaysia (USIM)Myocardial infarction (MI) and stroke are two of the top causes of death globally, including countries in Asia. These diseases are part of the cardiovascular disease and share similar risk factors such as hypertension, hypercholesterolemia, diabetes, BMI, and smoking. Each country in Asia region has a different rate of death caused by stroke and myocardial disease, which is related to the prevalence of risk factors among their population. By investigating the trends and distribution of CVD death rate and the prevalence of risk factors in selected countries, we are able to identify that hypertension and smoking are indeed important risk factors for stroke and MI. Although glucose level, cholesterol level, and BMI are not able to reflect the distribution of CVD death rate well, they must have an association with stroke and MI to some extent. Practicing healthy lifestyle and avoiding risk factors should be able to reduce the risk of death by stroke or MI. � 2017 American Scientific Publishers All rights reserved. - Some of the metrics are blocked by yourconsent settings
Publication The Effects of Fuel Price Fluctuation on Household Income in Malaysia(Institute for Mathematical Research (INSPEM), Universiti Putra Malaysia, 2020) ;Rahim N.A. ;Yusoff Y.S.Ibrahim M.S.The removal of fuel subsidy has affected many Malaysians due to the increase in the cost of living and hence causing insufficient income to cover monthly expenditures. This study investigates the total, direct and indirect effects of fuel price fluctuations on household income in Malaysia due to subsidy removal. The data from the Household Expenditure Survey (HES) conducted by the Department of Statistics Malaysia was used in this study. The households were differentiated into three income groups, namely Top 20% (T20), Middle 40% (M40), and Bottom 40% (B40) which included the years 2009/ 2010, 2014, and 2016. Then, the partial equilibrium approach was used to investigate all effects. The effects were investigated for different incomes and ethnic groups. This study found that group B40 experienced the greatest indirect and total effect of fuel price fluctuations due to the subsidy removal. For the direct effect, there was not much difference seen among all income groups after the subsidy removal. Furthermore, the effects were found to be lower after the fuel subsidy removal for all ethnic groups. Thus, the findings could help the government in examining the policy of subsidy removal in order to successfully help the poor. Hence, this could improve the quality of life, especially for the income groups B40 and M40. - Some of the metrics are blocked by yourconsent settings
Publication Foreign currency exposure and hedging practices: New evidence from emerging market of ASEAN-4(American Scientific Publishers, 2017) ;Wahab H.A. ;Husin M.A.A. ;Nordin N.M. ;Yusoff Y.S. ;Zainudin W.N.R.A. ;Faculty of Science and TechnologyUniversiti Sains Islam Malaysia (USIM)Until recently, there has been little interest put in assessing the impact of foreign currency derivatives on the variation of exchange rate exposure in emerging market. Furthermore, greater economic openness coupled with relatively low intensity of hedging among ASEAN firms motivated us to investigate the relevance impact of foreign currency derivatives (FCD) to firm value under the context of small open economies of ASEAN-4. The study involves 120 non-financial listed corporations from Indonesia, Malaysia, Thailand and Singapore from January 1993 to September 2015. The level of exposure is assessed at aggregate level using Random Effects GLS specification. Several interesting findings are found in this study. First, USD remains the major source of exposure of ASEAN-4 firms. Second, there is no significant influence of the FCD usage to the level of exposure for overall period, suggesting that FCD is not suitable to mitigate long term (operational) exposure. Third, in relation to time varying exposure, there is a noticeable impact of FCD to the level of exposure of Indonesian and Malaysian firms in the middle of the Asian Financial Crisis 1997 and to a lesser extent during the Global Financial Crisis 2008. On the other hand, Singaporean and Thailand firms show mixed findings, suggesting that sample firms in these two countries might have concentrated on other forms of hedging such as operational and natural hedging, whereby the firms are considered resourceful and well diversified. � 2017 American Scientific Publishers All rights reserved. - Some of the metrics are blocked by yourconsent settings
Publication Modelling sudden deaths following myocardial infarction in Malaysia(American Institute of Physics Inc., 2018) ;Halim M.H.A. ;Yusoff Y.S. ;Yusuf M.M. ;Faculty of Science and TechnologyUniversiti Sains Islam Malaysia (USIM)The first 30 days after the onset of myocardial infarction (MI), also known as heart attack, is very crucial for the patients, as the risk of deaths during the period of time is considerably high. Using logistic regression, we will model the deaths within 30 days following MI, and see how the MI risk factors affect the probability of sudden deaths. A dataset for the regression consists of 28420 patients from several hospitals in Malaysia, provided by National Cardiovascular Disease Database (NCVD). The risk factors studied in this paper are age, gender, year of onset, smoking habit, BMI, diabetes, hypertension, and cholesterol level. The regression results show that the risk of sudden deaths increase with age and diabetes, while BMI, hypertension and cholesterol level have inverse effects on sudden deaths rate. There are no significant changes in the sudden deaths rate observed for different gender, smoking habits and the year of onset. � 2018 Author(s). - Some of the metrics are blocked by yourconsent settings
Publication Mortality rates due to coronary heart disease by specific sex and age groups among Malaysians(Newswood Limited, 2017) ;Abdullah W.M.S.W. ;Yusoff Y.S. ;Basir N. ;Yusuf M.M. ;Faculty of Science and TechnologyUniversiti Sains Islam Malaysia (USIM)The objective of this study is to see the trends of Mortality Rate due to Coronary Heart Disease among Malaysian population by different Age and Sex groups. This is due to statistics report from Department of Statistics Malaysia and Ministry of Health Malaysia that shown the number of Malaysians suffered coronary heart disease has increase every year. This study has been conducted to see current mortality rates from coronary heart disease in Malaysia. This study used Age Specific Death Rate to calculate mortality rates of CHD. This study also aimed to see which age group and gender have most number of death due to coronary heart disease in Malaysia. The data used in this study is secondary time series data from year 2001 to 2013 and were taken from Department of Statistics Malaysia (DOS). Generally, the result shows that the mortality rate of Coronary Heart Disease among Malaysians increases every year. Number of males suffered Coronary Heart Disease are more than females and age group 60 and above are the highest and riskiest group to suffer coronary heart disease. Copyright International Association of Engineers. - Some of the metrics are blocked by yourconsent settings
Publication A new system call classification for android mobile malware surveillance exploitation via SMS message(Springer Verlag, 2016) ;Mohd Saudi M. ;Abd Rahman M.Z. ;Mahmud A.A. ;Basir N. ;Yusoff Y.S.Universiti Sains Islam Malaysia (USIM)Nowadays, Android has become the most widely used platform for smartphones. Due to the active used of smartphones, the floodgates of mobile malware threats are open every single day. Mobile malware harms users by illegally disable a mobile device, allowing malicious user to remotely control the device and steal personal information stored on the device. One of the surveillance features that attackers could abuse to gain those benefits is by exploiting the SMS message. Therefore, this paper introduces a new system call classification for SMS exploitation using a covering algorithm. The new system call classification can be used as a guidance to defend against mobile malware attacks. 1260 malware samples related to SMS exploitation from the Android Malware Genome Project have been analysed. The experiment was conducted using the dynamic analysis and open source tools in a controlled lab environment. � Springer International Publishing Switzerland 2016. - Some of the metrics are blocked by yourconsent settings
Publication Predicting Sudden Deaths Following Myocardial Infarction in Malaysia Using Machine Learning Classifiers(Science Publishing Corporation Inc, 2018) ;Halim M.H.A. ;Yusoff Y.S. ;Yusuf M.M. ;Faculty of Science and TechnologyUniversiti Sains Islam Malaysia (USIM)Myocardial infarction (MI) is among the top causes of death in Malaysia. The mortality rate following MI was high, especially within the first 30 days after the onset. This paper study the ability of k-Nearest Neighbors (kNN) and Naïve Bayes algorithms to predict the 30-day mortality of MI patients, using. The dataset used for this study is provided by National Cardiovascular Disease Database (NCVD) which consist of 2840 MI patients from hospitals in Malaysia. The sudden death predictions made by the machine learning are based on the age, gender, year of onset, smoking habit, BMI, diabetes, hypertension and cholesterol level. The result suggests that kNN algorithm has better performance in predicting the sudden death compared to Naïve Bayes. The number of independent variables plays an important role in mortality prediction, and removing insignificant variables improve the performance. - Some of the metrics are blocked by yourconsent settings
Publication Probabilistic models for Heart Disease and related conditions(Newswood Limited, 2017) ;Yusoff Y.S. ;Streftaris G. ;Waters H.R. ;Faculty of Science and Technology ;Universiti Sains Islam Malaysia (USIM)Heriot-Watt UniversityThe mortality rates in the UK has changed over time. The prevalence of Ischaemic Heart Disease (IHD) and stroke in the UK has been decreasing which has contributed to the changes between 1981 and 2000. The major risk factors associated with IHD and stroke, in addition to age, sex and smoking, are body mass index, diabetes, hypertension and hypercholesterolaemia. The objectives of this study is to investigate the effect of changes in the risk factors and quantify the extent of these changes. The results showed that smoking and hypertension has the highest effect on IHD, stroke and mortality for males and females. Lower rates of hypertension would reduce the prevalence of IHD and stroke as it has a direct effect on IHD, stroke and mortality. Changes in the risk factors would increase or decrease the number of IHD, stroke and deaths. Deaths from these factors could be reduced if the smoking ban policy and promotion towards no smoking are done widely and reducing the level of hypertension by living a healthy lifestyle.