Displaying publications 1 - 20 of 52 in total

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  1. Ng CW
    Citation: Ng CW. Universal Health Coverage Assessment Malaysia. Kuala Lumpur: Global Network for Health Equity (GNHE); 2015
  2. Dahlui M, Ng C, Al-Sadat N, Ismail S, Bulgiba A
    Asian Pac J Cancer Prev, 2011;12(2):369-72.
    PMID: 21545196
    OBJECTIVES: This study aimed to determine the rate of breast self examination (BSE) among the female staff of University of Malaya and to determine the role of BSE in detecting breast abnormalities.

    METHODS: A total of 1598 questionnaires were posted to all female staff, aged 35 years and above. Their knowledge on breast cancer, practice of BSE and detection rate of breast abnormality as confirmed by CBE was determined.

    RESULTS: The response rate for this study was 45 percent (714 respondents). The rate of respondents having awareness on breast cancer was 98.7 percent. Eighty four percent (598) of the respondents had performed BSE in their lifetime. However, in only 41% was it regular at the recommended time. Forty seven percent (334) had undergone CBE at least once in a lifetime but only 26% (185) had CBE at least once in the past 3 years, while 23% (165) had had a mammogram. There was a significant relationship between CBE and BSE whereby those who had CBE were twice more likely to do BSE. Nineteen percent (84 respondents) of those who did BSE claimed they had detected a breast lump. Of these, 87% (73) had gone for CBE and all were confirmed as such.

    CONCLUSION: BSE is still relevant as a screening tool of breast cancer since those who detect breast lump by BSE will most probably go for further check up. CBE should be done to all women, especially those at highest risk of breast cancer, to encourage and train for BSE.

  3. Mariapun J, Ng CW, Hairi NN
    J Epidemiol, 2018 06 05;28(6):279-286.
    PMID: 29657257 DOI: 10.2188/jea.JE20170001
    BACKGROUND: Economic development is known to shift the distribution of obesity from the socioeconomically more advantaged to the less advantaged. We assessed the socioeconomic trends in overweight, obesity, and abdominal obesity across a period of significant economic growth.
    METHODS: We used the Malaysian National Health and Morbidity Survey data sets for the years 1996, 2006, and 2011 to analyze the trends among adults aged 30 years and above. The World Health Organization's Asian body mass index cut-off points of ≥23.0 kg/m2 and ≥27.5 kg/m2 were used to define overweight and obesity, respectively. Abdominal obesity was defined as having a waist circumference of ≥90 cm for men and ≥80 cm for women. Household per-capita income was used as a measure of socioeconomic position. As a summary measure of inequality, we computed the concentration index.
    RESULTS: Women in Peninsular Malaysia demonstrated patterns that were similar to that of developed countries in which the distributions for overweight, obesity, and abdominal obesity became concentrated among the poor. For women in East Malaysia, distributions became neither concentrated among the rich nor poor, while distributions for men were still concentrated among the rich. Chinese women, particularly from the richest quintile, had the lowest rates and lowest increase in overweight and obesity. All distributions of Chinese women were concentrated among the poor. The distributions of Malay men were still concentrated among the rich, while distributions for Chinese and Indian men and Malay and Indian women were neither concentrated among the rich nor poor.
    CONCLUSION: As the country continues to progress, increasing risks of overweight and obesity among the socioeconomically less advantaged is expected.
    Study name: National Health and Morbidity Survey (NHMS-1996, NHMS-2006, NHMS-2011)
  4. Mariapun J, Hairi NN, Ng CW
    Nicotine Tob Res, 2019 10 26;21(11):1539-1546.
    PMID: 30256989 DOI: 10.1093/ntr/nty203
    INTRODUCTION: Higher smoking rates and lower cessation rates among the poor compared to the rich are evident in high-income countries. In low and middle-income countries (LMICs), many of which are in the early stages of tackling the tobacco epidemic, more knowledge is required of the socioeconomic inequalities in smoking. This is especially the case for upper-middle-income countries, where smoking prevalence is highest. This study examines trends in the socioeconomic gradient in smoking and cessation among adults across a period of rapid economic development in Malaysia, an LMIC with an upper-middle-income economy.

    METHODS: The socioeconomic trends in smoking were analyzed using data from cross-sectional National Health and Morbidity Surveys for the years 1996, 2006, and 2011. Household per capita income was used as a measure of socioeconomic position. As a measure of inequality, the concentration index that quantified the degree of socioeconomic inequality in a health outcome was computed. Smoking was assessed in current and former smokers. The study population was examined by gender, region, and age group.

    RESULTS: This study found a trend of an increasingly higher smoking prevalence among the poor and higher cessation rates among the rich. With the exception of younger women in Peninsular Malaysia, the socioeconomic gradient in current smoking is concentrated among the poor. For former smokers, especially men, distributions across the years were mostly concentrated among the rich.

    CONCLUSION: It is important to ensure that health policies, programs, and interventions consider the potential impact of the socioeconomic patterning in smoking on equity in health.

    IMPLICATIONS: Findings on the socioeconomic gradient in smoking and cessation from Malaysia across a period of rapid economic development will contribute to addressing the paucity of knowledge on the socioeconomic gradient of smoking and cessation in other progressing LMICs. This study provides evidence from an upper-middle-income country, of an increasing trend of smoking among the poor and an increasing trend of cessation rates among the rich, particularly for men. We found opposing trends for younger adult women in the more developed, Peninsular Malaysia. More rich young women were found to have taken up smoking compared to socioeconomically less advantaged young women.

  5. Ng CW, How CH, Ng YP
    Singapore Med J, 2017 08;58(8):459-466.
    PMID: 28848991 DOI: 10.11622/smedj.2017080
    Major depression is common in the primary care setting. In the final article of this series, we illustrate the approach to the management of depression in primary care. Psychotherapy has been shown to be as effective as antidepressants for mild to moderate major depression. The common myth that antidepressants are addictive should be addressed. Antidepressants should be started at a subtherapeutic dose to assess tolerability, then gradually increased until a minimally effective dose is achieved. Apart from pharmacotherapy and psychotherapy, management of depression should include managing stressors, engaging social and community support, dealing with stigma and discrimination, and managing concomitant comorbidities. A strong therapeutic relationship and empathic listening are important between the primary care physician and patient.
  6. Ng CW, How CH, Ng YP
    Singapore Med J, 2016 Nov;57(11):591-597.
    PMID: 27872937 DOI: 10.11622/smedj.2016174
    Major depression is a common condition seen in the primary care setting, often presenting with somatic symptoms. It is potentially a chronic illness with considerable morbidity, and a high rate of relapse and recurrence. Major depression has a bidirectional relationship with chronic diseases, and a strong association with increased age and coexisting mental illnesses (e.g. anxiety disorders). Screening can be performed using clinical tools for major depression, such as the Patient Health Questionaire-2, Patient Health Questionaire-9 and Beck Depression Inventory, so that timely treatment can be initiated. An accurate diagnosis of major depression and its severity is essential for prompt treatment to reduce morbidity and mortality. This is the first of a series of articles that illustrates the approach to the management of major depression in primary care. Our next articles will cover suicide risk assessment in a depressed patient and outline the basic principles of management and treatment modalities.
  7. Ng CW, How CH, Ng YP
    Singapore Med J, 2017 Feb;58(2):72-77.
    PMID: 28210741 DOI: 10.11622/smedj.2017006
    Major depression is a common condition seen in the primary care setting. This article describes the suicide risk assessment of a depressed patient, including practical aspects of history-taking, consideration of factors in deciding if a patient requires immediate transfer for inpatient care and measures to be taken if the patient is not hospitalised. It follows on our earlier article about the approach to management of depression in primary care.
  8. Mariapun J, Hairi NN, Ng CW
    PLoS One, 2016;11(6):e0158685.
    PMID: 27362581 DOI: 10.1371/journal.pone.0158685
    INTRODUCTION: Socioeconomic inequalities in health represent unfairness in the health distribution of a population. Efforts to produce information on mortality distributions in many low and middle income countries (LMICs) are mostly hampered by lack of data disaggregated by socioeconomic groups. In this paper we describe how mortality statistics obtained from multiple data sources were combined to provide an evaluation of the socioeconomic distribution of mortality in Malaysia, a LMIC located in the Asia Pacific region.

    METHODS: This study has an ecological design. As a measure of socioeconomic status, we used principal component analysis to construct a socioeconomic index using census data. Districts were ranked according to the standardised median index of households and assigned to each individual in the 5-year mortality data. The mortality indicators of interest were potential years of life lost (PYLL), standardised mortality ratio (SMR), infant mortality rate (IMR) and under-5 mortality rate (U5MR). Both socioeconomic status and mortality outcomes were used compute the concentration index which provided the summary measure of the magnitude of inequality.

    RESULTS: Socially disadvantaged districts were found to have worse mortality outcomes compared to more advantaged districts. The values of the concentration index for the overall population of the Peninsula are C = -0.1334 (95% CI: -0.1605 to -0.1063) for the PYLL, C = -0.0685 (95% CI: -0.0928 to -0.0441) for the SMR, C = -0.0997 (95% CI: -0.1343 to -0.0652) for the IMR and C = -0.1207 (95% CI: -0.1523 to -0.0891) for the U5MR. Mortality outcomes within ethnic groups were also found to be less favourable among the poor.

    CONCLUSION: The findings of this study suggest that socioeconomic inequalities disfavouring the poor exist in Malaysia.

  9. Saw Chien G, Chee-Khoon C, Wai VH, Ng CW
    Asia Pac J Public Health, 2015 Nov;27(8 Suppl):79S-85S.
    PMID: 26116582 DOI: 10.1177/1010539515591847
    The goal of ensuring geographic equity of health care can be achieved if the geographic distribution of health care services is according to the health needs. This study aims to examine whether acute Ministry of Health hospital beds are distributed according to population health needs in various states within Peninsular Malaysia. The health needs of each state are indicated by the crude death rate. Comparisons of the share of hospital beds to that of population with differential health needs were assessed using concentration curve and index. In most years between 1995 and 2010, the distribution of hospital beds in Peninsular Malaysia were concentrated among states with higher health needs. This is in line with the principle of vertical equity and could be one advantage of a central federal government that can allocate health care resources to prioritize states with higher health care needs.
  10. Loganathan T, Lee WS, Lee KF, Jit M, Ng CW
    PLoS One, 2015;10(5):e0125878.
    PMID: 25941805 DOI: 10.1371/journal.pone.0125878
    While healthcare costs for rotavirus gastroenteritis requiring hospitalization may be burdensome on households in Malaysia, exploration on the distribution and catastrophic impact of these expenses on households are lacking.
  11. Sathasivam J, Kamaruzzaman SB, Hairi F, Ng CW, Chinna K
    Asia Pac J Public Health, 2015 Nov;27(8 Suppl):52S-61S.
    PMID: 25902935 DOI: 10.1177/1010539515583332
    In the past decade, the population in Malaysia has been rapidly ageing. This poses new challenges and issues that threaten the ability of the elderly to independently age in place. A multistage cross-sectional study on 789 community-dwelling elderly individuals aged 60 years and above was conducted in an urban district in Malaysia to assess the geriatric syndrome of frailty. Using a multidimensional frailty index, we detected 67.7% prefrail and 5.7% frail elders. Cognitive status was a significant correlate for frailty status among the respondents as well as those who perceived their health status as very poor or quite poor; but self-rated health was no longer significant when controlled for sociodemographic variables. Lower-body weakness and history of falls were associated with increasing frailty levels, and this association persisted in the multivariate model. This study offers support that physical disability, falls, and cognition are important determinants for frailty. This initial work on frailty among urban elders in Malaysia provides important correlations and identifies potential risk factors that can form the basis of information for targeted preventive measures for this vulnerable group in their prefrail state.
  12. Adekunjo FO, Rasiah R, Dahlui M, Ng CW
    Afr J AIDS Res, 2020 Dec;19(4):287-295.
    PMID: 33337980 DOI: 10.2989/16085906.2020.1834417
    HIV/AIDS is a major health issue faced by the world, generally, but particularly sub-Saharan Africa. Nigeria ranked third in the world by number of people living with HIV/AIDS in 2019. Despite prominent HIV counselling and testing (HCT) intervention programmes, Nigeria faces serious challenges, such as inadequate funding and low utilisation rates. Paucity of research into such a critical topic has restricted the capacity of policy makers to address the problem adequately. Consequently, a cross-sectional study was carried out using the contingent valuation method to assess the economic quantum of payment and determining factors associated with people's willingness to pay for HCT services. Data were collected from 768 people selected by convenience sampling of three local government areas - Alimosho, Ikorodu and Surulere in Lagos State, Nigeria. Data were analysed using descriptive statistics, chi-square, Mann-Whitney, and general linear regression model analysis. Findings show that 75% of respondents were willing to pay an average fee of N1 291 ($4.22) for HCT services. Significant determinants of willingness to pay were: income; knowledge of someone living with HIV or died of AIDS; worry about HIV infection; and fear of HIV-related stigma. The findings offer vital information germane to co-payment schemes aimed at financial sustainability of HCT and HIV/AIDS programmes in Nigeria.
  13. Loganathan T, Ng CW, Lee WS, Jit M
    Pediatr Infect Dis J, 2016 06;35(6):601-6.
    PMID: 27008464 DOI: 10.1097/INF.0000000000001129
    BACKGROUND: Rotavirus gastroenteritis (RVGE) results in substantial mortality and morbidity worldwide. However, an accurate estimation of the health and economic burden of RVGE in Malaysia covering public, private and home treatment is lacking.

    METHODS: Data from multiple sources were used to estimate diarrheal mortality and morbidity according to health service utilization. The proportion of this burden attributable to rotavirus was estimated from a community-based study and a meta-analysis we conducted of primary hospital-based studies. Rotavirus incidence was determined by multiplying acute gastroenteritis incidence with estimates of the proportion of gastroenteritis attributable to rotavirus. The economic burden of rotavirus disease was estimated from the health systems and societal perspective.

    RESULTS: Annually, rotavirus results in 27 deaths, 31,000 hospitalizations, 41,000 outpatient visits and 145,000 episodes of home-treated gastroenteritis in Malaysia. We estimate an annual rotavirus incidence of 1 death per 100,000 children and 12 hospitalizations, 16 outpatient clinic visits and 57 home-treated episodes per 1000 children under-5 years. Annually, RVGE is estimated to cost US$ 34 million to the healthcare provider and US$ 50 million to society. Productivity loss contributes almost a third of costs to society. Publicly, privately and home-treated episodes consist of 52%, 27% and 21%, respectively, of the total societal costs.

    CONCLUSIONS: RVGE represents a considerable health and economic burden in Malaysia. Much of the burden lies in privately or home-treated episodes and is poorly captured in previous studies. This study provides vital information for future evaluation of cost-effectiveness, which are necessary for policy-making regarding universal vaccination.

  14. Chuah KH, Ng CW, Zabri K, Wong CL
    Med J Malaysia, 2017 02;72(1):73-74.
    PMID: 28255149 MyJurnal
    Dengue infection is epidemic but ocular complications of dengue are less reported. We report a case of dengueinfected patient with disturbing ocular symptoms. He was admitted for severe dengue. Subsequently, he presented with symptoms of bilateral central scotoma with metamorphosia. Fundus examination revealed cotton wool spots and flame-shaped haemorrhages at the macula, with dull foveal light reflex. He was diagnosed with bilateral dengue maculopathy. The patient was managed conservatively with surveillance. One week later, his eye symptoms improved and were resolved six months later. Early recognition and close monitoring remains the key to successful management and interventions are rarely needed.
  15. Jayaraj VJ, Rampal S, Ng CW, Chong DWQ
    Lancet Reg Health West Pac, 2021 Dec;17:100295.
    PMID: 34704083 DOI: 10.1016/j.lanwpc.2021.100295
    Background: COVID-19 has rapidly spread across the globe. Critical to the control of COVID-19 is the characterisation of its epidemiology. Despite this, there has been a paucity of evidence from many parts of the world, including Malaysia. We aim to describe the epidemiology of COVID-19 in Malaysia to inform prevention and control policies better.

    Methods: Malaysian COVID-19 data was extracted from 16 March 2020 up to 31 May 2021. We estimated the following epidemiological indicators: 7-day incidence rates, 7-day mortality rates, case fatality rates, test positive ratios, testing rates and the time-varying reproduction number (Rt).

    Findings: Between 16 March 2020 and 31 May 2021, Malaysia has reported 571,901 cases and 2,796 deaths. Malaysia's average 7-day incidence rate was 26•6 reported infections per 100,000 population (95% CI: 17•8, 38•1). The average test positive ratio and testing rate were 4•3% (95% CI: 1•6, 10•2) and 0•8 tests per 1,000 population (95% CI: <0•1, 3•7), respectively. The case fatality rates (CFR) was 0•6% (95% CI: <0•1, 3•7). Among the 2,796 cases who died, 87•3% were ≥ 50 years.

    Interpretation: The public health response was successful in the suppression of COVID-19 transmission or the first half of 2020. However, a state election and outbreaks in institutionalised populations have been the catalyst for more significant community propagation. This rising community transmission has continued in 2021, leading to increased incidence and strained healthcare systems. Calibrating NPI based on epidemiological indicators remain critical for us to live with the virus. (243 words).

    Funding: This study is part of the COVID-19 Epidemiological Analysis and Strategies (CEASe) Project with funding from the Ministry of Science, Technology and Innovation (UM.0000245/HGA.GV).

  16. Loganathan T, Rui D, Ng CW, Pocock NS
    PLoS One, 2019;14(7):e0218669.
    PMID: 31269052 DOI: 10.1371/journal.pone.0218669
    BACKGROUND: Malaysia is widely credited to have achieved universal health coverage for citizens. However, the accessibility of healthcare services to migrant workers is questionable. Recently, medical fees for foreigners at public facilities were substantially increased. Mandatory health insurance only covers public hospital admissions and excludes undocumented migrants. This study explores barriers to healthcare access faced by documented and undocumented migrant workers in Malaysia.

    METHODS: We use qualitative data from 17 in-depth interviews conducted with key informants from civil society organisations, trade unions, academia, medical professionals, as well as migrant workers and their representatives. We interviewed doctors working in public hospitals and private clinics frequented by migrants. Data were analysed using thematic analysis.

    RESULTS: We found that healthcare services in Malaysia are often inaccessible to migrant workers. Complex access barriers were identified, many beyond the control of the health sector. Major themes include affordability and financial constraints, the need for legal documents like valid passports and work permits, language barriers, discrimination and xenophobia, physical inaccessibility and employer-related barriers. Our study suggests that government mandated insurance for migrant workers is insufficient in view of the recent increase in medical fees. The perceived close working relationship between the ministries of health and immigration effectively excludes undocumented migrants from access to public healthcare facilities. Language barriers may affect the quality of care received by migrant workers, by inadvertently resulting in medical errors, while preventing them from giving truly informed consent.

    CONCLUSIONS: We propose instituting migrant-friendly health services at public facilities. We also suggest implementing a comprehensive health insurance to enable healthcare access and financial risk protection for all migrant workers. Non-health sector solutions include the formation of a multi-stakeholder migration management body towards a comprehensive national policy on labour migration which includes health.

  17. Siddiqui MB, Ng CW, Low WY, Abid K
    PLoS One, 2023;18(12):e0278149.
    PMID: 38109305 DOI: 10.1371/journal.pone.0278149
    The majority (40%) of the world's under-five mortality burden is concentrated in nations like Nigeria (16.5%), India (16%), Pakistan (8%), and the Democratic Republic of the Congo (6%), where an undetermined number of under-five deaths go unrecorded. In low-resource settings throughout the world, the Verbal Autopsy-Social Autopsy (VASA) technique may assist assess under-five mortality estimates, assigning medical and social causes of death, and identifying relevant determinants. Uncertainty regarding missing data in high-burden nations like Pakistan necessitates a valid and reliable VASA instrument. This is the first study to validate Child Health Epidemiology Reference Group-CHERG's VASA tool globally. In Pakistan, data from such a valid and reliable tool is vital for policy. This paper reports on the VASA tool in Karachi, Pakistan. Validity and reliability of the CHERG VASA tool were tested using face, content, discriminant validation, and reliability tests on one hundred randomly selected mothers who had recently experienced an under-five child death event. Data were computed on SPSS (version-21) and R software. Testing revealed high Item-content Validity Index (I-CVI) (>81.43%); high Cronbach's Alpha (0.843); the accuracy of between 75-100% of the discriminants classifying births to live and stillbirths; and I-CVI (>82.07% and 88.98% respectively) with high accuracy (92% and 97% respectively) for assigning biological and social causes of child deaths, respectively. The CHERG VASA questionnaire was found relevant to the conceptual framework and valid in Pakistan. This valid tool can assign accurate medical and non-medical causes of child mortality cases occurring in Pakistan.
  18. Ng RJ, Choo WY, Ng CW, Hairi NN
    Health Policy Plan, 2024 Mar 12;39(3):268-280.
    PMID: 38300142 DOI: 10.1093/heapol/czae004
    The vital role of healthcare financing in achieving universal health coverage is indisputable. However, most countries, including Malaysia, face challenges in establishing an equitable and sustainable healthcare financing system due to escalating healthcare costs, an ageing population and a growing disease burden. With desirable pre-payment and risk pooling features, private health insurance (PHI) is considered an alternative financing option to reduce out-of-pocket (OOP) medical expenditure. However, ongoing theoretical and empirical debates persist regarding the adequacy of financial risk protection provided by PHI largely because it depends on its role, the benefit design and the regulations in place. Our study aimed to investigate the effect of supplementary PHI on OOP inpatient medical expenditure in Malaysia. Secondary data analysis was conducted using the Malaysian National Health and Morbidity Survey 2019 dataset. A total of 983 respondents with a history of inpatient hospitalization in the past 12 months were included in the study. Instrumental variable analysis using a two-stage residual inclusion was performed to address endogeneity bias, with wealth status and education level as the instrumental variables. Tobit regression model was used in the second stage considering the censored distribution of the outcome variable. Missing data were handled using multiple imputation. About one-fifth of the respondents had PHI. In this study, we found that having PHI significantly increased OOP inpatient medical expenditure in all three marginal effects. Additionally, age, residential location, ethnicity (citizenship), being covered by government guarantee letter, government funding and employer-sponsored health insurance were other significant factors associated with OOP inpatient medical expenditure. Our findings undermine a key justification to advocate PHI uptake among the population, with a need for the Malaysian government to reassess the role of PHI in healthcare financing and reconsider PHI subsidization policy. Regulations should also be strengthened to enhance the financial risk protection provided by PHI.
  19. Woon YL, Ng CW, Mudin RN, Suli Z
    Western Pac Surveill Response J, 2019 05 21;10(2):39-45.
    PMID: 31720053 DOI: 10.5365/wpsar.2019.10.1.001
    Background: Dengue patients in Malaysia have the choice to seek care from either public or private sector providers. This study aims to analyse the pattern of health facility use among dengue patients to provide input for the ongoing policy discussion regarding public-private integration. The focus of this study is in the Klang Valley, which has a high dengue burden as well as a high number of private facilities.

    Methods: This is a cross-sectional study using an available secondary data source - the Malaysian national dengue passive surveillance system, e-Dengue registry. A total of 61 455 serologically confirmed dengue cases from the Klang Valley, registered in year 2014, were included. We retrospectively examined the relationship between demographic factors and the choice of health-care sector by logistic regression.

    Results: The median age of the cohort was 26 (interquartile range: 17 to 37) years. More private facilities (54.4%) were used for inpatient care; more public facilities (68.2%) were used for outpatient care. The Chinese and urban populations showed significantly higher use of the private health-care sector with an adjusted odds ratio of 4.8 [95% confidence interval (CI): 4.6-5.1] and 2.3 (95% CI: 2.2-2.4), respectively.

    Conclusion: Both public and private health facilities bear significant responsibilities in delivering health-care services to dengue patients. The workload of both sectors should be included in future health policy planning by public agencies.

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