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Browsing Publications by Author "Abas, AL"
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Publication Cataract Surgery Incidence Trends in a Tertiary Public Hospital in Malaysia(Kathmandu University, 2019) Thevi, T; Abas, ALABSTRACT Background Since cataract is the leading cause of blindness and no study has been done on the surgical incidence trends, we conducted this research in Melaka. Objective To describe incidences of cataract surgery according to basic demographic variables and types of surgery performed. Method Using the National Eye Database (NED), we performed descriptive statistics calculating incidence rates per 1,000 population by demographic features and types of cataract operations to look at the trends of surgeries in the population. Statistics for population were obtained from the department of statistics. Result From 2007-2010, 6270 patients mostly 60-69 years underwent cataract surgery. Phacoemulsification (78.2%) was the commonest surgery performed. The annual incidence rate of cataract surgery reduced from 2.05 per 1000 population in 2007 to 2.02 per 1000 population in 2010 (p<0.05). Incidence rates for those aged 60 and above rose while for those aged below nine years it declined. Indians had the highest incidence rates followed by Chinese and Malays per 1000 population. Females had a higher incidence rate although there was a declining trend over the years. Conclusion Cataract surgery rates showed a decline. Public health education and awareness on detection and operating upon cataracts should be increased and especially targeted towards vulnerable groups such as women, individuals of Indian ethnicity and those aged 50 years and above. KEY WORDS Cataract surgery, Melaka public sector, National eye databasePublication Effects of Bauxite and Alumina Exposure on Incidence of Cancer - Meta-analysis(Kathmandu University, 2020) Thevi, T; Abas, ALABSTRACT Bauxite is an ore from which Aluminium is produced. Malaysia, once the leading producer of bauxite has reduced production as mining activity has caused community outrage. Due to concerns about health concerns, rising pollution and environmental hazards, the government has revoked the licenses of bauxite miners. We therefore did a meta-analysis to assess the relationship between exposure to Bauxite and Alumina with incidence of various types of cancers. Bauxite mines and alumina refineries. Individuals of all ages exposed to Bauxite and Alumina. Exposure to bauxite and alumina. Incidence due to overall cancers and specific types of cancers. Exposure to bauxite and alumina did not cause variations in incidence of overall cancer and specific types of cancer such as cancer of lip, cancer of the oral cavity and pharynx, cancer of digestive organs and others. We conclude that there is no evidence that bauxite or alumina exposure cause increase incidence of cancer but due to the small number of studies included in this review, we recommend more cohort studies to be done in future. KEY WORDS Bauxite alumina exposure, Cancer incidencePublication Effects of Bauxite and Alumina Exposure on Mortality due to Cancer - Meta-analysis(Kathmandu University, 2024) Thevi, T; Abas, ALABSTRACT Bauxite is an ore from which Aluminium is produced. Malaysia, once the leading producer of bauxite has reduced production as mining activity has caused community outrage. Due to concerns about health concerns, rising pollution and environmental hazards, the government has revoked the licenses of bauxite miners. We therefore did a meta-analysis to assess the relationship between exposure to Bauxite and Alumina with mortality of overall cancer as well as specific types of cancers. Participants of were individuals of all ages who were exposed to Bauxite and Alumina while working in Bauxite mines and Alumina refineries. Exposure to bauxite and alumina did not cause variations in mortality of overall cancer and specific types of cancer such as cancer of lip, cancer of the oral cavity and pharynx, cancer of digestive organs and others. We conclude that there is no evidence that bauxite or alumina exposure cause increase mortality due to cancer but due to the small number of studies included in this review, we recommend more cohort studies to be done in future. KEY WORDS Bauxite alumina exposure, Cancer mortality, Review