Irene O. L. Wong

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BACKGROUND A variety of Serfling-type statistical algorithms requiring long series of historical data, exclusively from temperate climate zones, have been proposed for automated monitoring of influenza sentinel surveillance data. We evaluated three alternative statistical approaches where alert thresholds are based on recent data in both temperate and(More)
Breast cancer incidence should be assessed separately in different populations, as it differs substantially between Chinese and Caucasian women, and more generally in developing versus developed populations. Estimation of future trends is important for public health planning. On the basis of the recent breast cancer incidence trends, we projected future(More)
BACKGROUND Accurate and precise estimates of the incubation distribution of novel, emerging infectious diseases are vital to inform public health policy and to parameterize mathematical models. METHODS We discuss and compare different methods of estimating the incubation distribution allowing for interval censoring of exposures, using data from the severe(More)
OBJECTIVE To assess the educational effectiveness on learning evidence based medicine of a handheld computer clinical decision support tool compared with a pocket card containing guidelines and a control. DESIGN Randomised controlled trial. SETTING University of Hong Kong, 2001. PARTICIPANTS 169 fourth year medical students. MAIN OUTCOME MEASURES(More)
BACKGROUND As yet, no one has written a comprehensive epidemiologic account of a severe acute respiratory syndrome (SARS) outbreak from an affected country. OBJECTIVE To provide a comprehensive epidemiologic account of a SARS outbreak from an affected territory. DESIGN Epidemiologic analysis. SETTING The 2003 Hong Kong SARS outbreak. PARTICIPANTS(More)
To better understand the distribution of resources and health care consumption patterns in different geo-ethnic and socio-economic settings, we sought to describe the patterns of illness, care-seeking behavior and health services utilization in Hong Kong compared to the US and UK. Data were derived from the 2002 Hong Kong Thematic Household Survey covering(More)
OBJECTIVE Given the slow adoption of medical informatics in Hong Kong and Asia, we sought to understand the contributory barriers and potential incentives associated with information technology implementation. DESIGN AND MEASUREMENTS A representative sample of 949 doctors (response rate = 77.0%) was asked through a postal survey to rank a list of nine(More)
We examined for the presence of moral hazard among those covered by medical benefits or insurance schemes, whether provided for by employers or privately purchased and stratified by health care provider sector in Hong Kong. Data for this study were derived from the 2002 Thematic Household Survey, covering 24,610 non-institutional residents aged 15 and over,(More)
BACKGROUND Research on trends in cancer incidence has usually examined single sites in populations that long ago completed the economic transition. The trends in 11 cancers in three groups in the recently transitioned Hong Kong Chinese population were examined to delineate the effects of economic transition and provide generalised aetiological insights. (More)
OBJECTIVES To evaluate the presence of moral hazard, adjusted for the propensity to have self-purchased insurance policies, employer-based medical benefits, and welfare-associated medical benefits in Hong Kong. METHODS Based on 2005 population survey, we used logistic regression and zero-truncated negative binomial/Poisson regressions to assess the(More)