Browsing by Person "Sivasampu, Sheamini"

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The Association Between Hospital Characteristics and Nonresponse in an Organization Survey: An Analysis of the National Healthcare Establishment and Workforce Survey in Malaysia
(SAGE, 2017-06-11) Foo, Chee Yoong; Reidpath, Daniel; Sivasampu, Sheamini
In any survey where some of the invited participants fail to respond estimates may be biased. The literature on survey nonresponse is substantial, and the intellectual focus has typically been on the nonresponse of individuals. An important yet less scrutinized area in the analysis of nonresponse is in organizational surveys, particularly surveys of health-care organizations. This study used data from the 2010 National Healthcare Establishment and Workforce Survey in Malaysia to examine the relationship between a set of measurable hospital attributes and their probability of survey response and the relationship between this probability and the differences in survey estimates. We found that readily measurable hospital characteristics such as size and geographical location are useful predictors of survey response likelihood. Larger hospitals and hospitals located in less developed geographical regions responded more favorably than their counterparts. We have also illustrated that the resulting response pattern affected some key survey estimates. These findings have the potential to extend our understanding of nonresponse to organization surveys in the health-care sector, potentially allow for the prediction of nonresponse, and help researchers to identify profiles of “reluctant responders” before a survey commences, so that additional engagement strategies may be used.
Sex differences in stroke metrics among Southeast Asian countries: Results from the Global Burden of Disease Study 2015
(SAGE Publications, 2019-03-06) Hwong, Wen Yea; Bots, Michiel L; Selvarajah, Sharmini; Sivasampu, Sheamini; Reidpath, Daniel; Law, Wan Chung; Musa, Kamarul Imran; Vaartjes, Ilonca
Background Sex differences in cardiovascular diseases generally disadvantage women, particularly within developing regions. Aims This study aims to examine sex-related differences in stroke metrics across Southeast Asia in 2015. Furthermore, relative changes between sexes are compared from 1990 to 2015. Methods Data were sourced from the Global Burden of Disease Study. Incidence and mortality from ischemic and hemorrhagic strokes were explored with the following statistics derived: (1) women-to-men incidence/mortality ratio and (2) relative percentage change in rate. Results Women had lower incidence and mortality from stroke compared to men. Notable findings include higher ischemic stroke incidence for women at 30–34 years in high-income countries (women-to-men ratio: 1.3, 95% CI: 0.1, 16.2 in Brunei and 1.3, 95% CI: 0.5, 3.2 in Singapore) and the largest difference between sexes for ischemic stroke mortality in Vietnam and Myanmar across most ages. Within the last 25 years, greater reductions for ischemic stroke metrics were observed among women compared to men. Nevertheless, women below 40 years in some countries showed an increase in ischemic stroke incidence between 0.5% and 11.4%, whereas in men, a decline from −4.2% to −44.2%. Indonesia reported the largest difference between sexes for ischemic stroke mortality; a reduction for women whereas an increase in men. For hemorrhagic stroke, findings were similar: higher incidence among young women in high-income countries and greater reductions for stroke metrics in women than men over the last 25 years. Conclusions Distinct sex-specific differences observed across Southeast Asia should be accounted in future stroke preventive guidelines.