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  1. Liew SM, Khoo EM, Ho BK, Lee YK, Omar M, Ayadurai V, et al.
    PLoS One, 2016;11(6):e0157631.
    PMID: 27336440 DOI: 10.1371/journal.pone.0157631
    BACKGROUND: The increasing incidence and geographical distribution of dengue has had significant impact on global healthcare services and resources. This study aimed to determine the factors associated with dengue-related mortality in a cohort of Malaysian patients.

    METHODS: This was a retrospective cohort study of patients in the Malaysian National Dengue Registry of 2013. The outcome measure was dengue-related mortality. Associations between sociodemographic and clinical variables with the outcome were analysed using multivariate analysis.

    RESULTS: There were 43 347 cases of which 13081 were serologically confirmed. The mean age was 30.0 years (SD 15.7); 60.2% were male. The incidence of dengue increased towards the later part of the calendar year. There were 92 probable dengue mortalities, of which 41 were serologically confirmed. Multivariate analysis in those with positive serology showed that increasing age (OR 1.03; CI:1.01-1.05), persistent vomiting (OR 13.34; CI: 1.92-92.95), bleeding (OR 5.84; CI 2.17-15.70) and severe plasma leakage (OR 66.68; CI: 9.13-487.23) were associated with mortality. Factors associated with probable dengue mortality were increasing age (OR 1.04; CI:1.03-1.06), female gender (OR 1.53; CI:1.01-2.33), nausea and/or vomiting (OR 1.80; CI:1.17-2.77), bleeding (OR 3.01; CI:1.29-7.04), lethargy and/or restlessness (OR 5.97; CI:2.26-15.78), severe plasma leakage (OR 14.72; CI:1.54-140.70), and shock (OR 1805.37; CI:125.44-25982.98), in the overall study population.

    CONCLUSIONS: Older persons and those with persistent vomiting, bleeding or severe plasma leakage, which were associated with mortality, at notification should be monitored closely and referred early if indicated. Doctors and primary care practitioners need to detect patients with dengue early before they develop these severe signs and symptoms.

  2. Liew SM, Khoo EM, Ho BK, Lee YK, Mimi O, Fazlina MY, et al.
    Asia Pac J Public Health, 2019 01;31(1):61-71.
    PMID: 30541329 DOI: 10.1177/1010539518817980
    This study aims to determine tuberculosis incidence, all-cause mortality, and its associated factors among health care workers (HCWs) registered in 2012 to 2014 with the Malaysian National Tuberculosis (MyTB) Surveillance Registry. Regression analysis was used to determine factors associated with all-cause mortality. Incidence rates ranged from 135.18 to 156.50/100 000 and were higher for HCWs compared with the general population (risk ratio = 1.70-1.96). The mean age at notification was 34.6 ± 10.55 years; 68.9% were female. Most were paramedics (44.3%) followed by other HCWs (41.9%) and doctors (13.8%). Nearly a quarter (23.8%) had extrapulmonary tuberculosis. There were 23 deaths giving a case fatality rate of 2.4%. Factors associated with death were older age (odds ratio [OR] =1.05; confidence interval [CI] =1.01-1.10), diabetes (OR = 3.83; CI = 1.32-11.08), HIV positivity (OR = 18.16; CI = 4.60-71.68), and not receiving directly observed therapy (DOTS) (OR = 10.97; CI = 3.61-33.38). It is important for HCWs to be aware of these increased risks and for authorities to implement protective measures.
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