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  1. Cheong AT, Sazlina SG
    Malays Fam Physician, 2015;10(2):36-44.
    PMID: 27099659 MyJurnal
    INTRODUCTION: Hill-Bone compliance to high blood pressure therapy scale (HBTS) is one of the useful scales in primary care settings. It has been tested in America, Africa and Turkey with variable validity and reliability. The aim of this paper was to determine the validity and reliability of the Malay version of HBTS (HBTS-M) for the Malaysian population.
    MATERIALS AND METHODS: HBTS comprises three subscales assessing compliance to medication, appointment and salt intake. The content validity of HBTS to the local population was agreed through consensus of expert panel. The 14 items used in the HBTS were adapted to reflect the local situations. It was translated into Malay and then back-translated into English. The translated version was piloted in 30 participants. This was followed by structural and predictive validity, and internal consistency testing in 262 patients with hypertension, who were on antihypertensive agent(s) for at least 1 year in two primary healthcare clinics in Kuala Lumpur, Malaysia. Exploratory factor analyses and the correlation between HBTS-M total score and blood pressure were performed. The Cronbach's alpha was calculated accordingly.
    RESULTS: Factor analysis revealed a three-component structure represented by two components on medication adherence and one on salt intake adherence. The Kaiser-Meyer-Olkin statistic was 0.764. The variance explained by each factors were 23.6%, 10.4% and 9.8%, respectively. However, the internal consistency for each component was suboptimal with Cronbach's alpha of 0.64, 0.55 and 0.29, respectively. Although there were two components representing medication adherence, the theoretical concepts underlying each concept cannot be differentiated. In addition, there was no correlation between the HBTS-M total score and blood pressure.
    CONCLUSION: HBTS-M did not conform to the structural and predictive validity of the original scale. Its reliability on assessing medication and salt intake adherence would most probably to be suboptimal in the Malaysian primary care setting.
  2. Chew BH, Cheong AT
    Med J Malaysia, 2013;68(1):24-9.
    PMID: 23466762 MyJurnal
    OBJECTIVE: Medical students are future doctors who are trained to treat all kind of diseases including people living with HIV/AIDS (PLWHA) without prejudice. This study was to determine the factors associated with knowledge on HIV/AIDS and stigma towards PLWHA among medical students.
    METHODS: This was a cross sectional study with stratified random sampling conducted in a public university, Malaysia. The participants were preclinical-year (year 1 and year 2) and clinical-year (year 3 and year 4) medical students. Simple randomisation was carried out after stratification of medical students into preclinical and clinical-year. The self-administered questionnaires were consisted of socio-demographic data, items assessing HIV/AIDS knowledge and items assessing stigmatisation attitudes towards PLWHA.
    RESULTS: We had 100% response rate of 340 participants. Pre-clinical and clinical year medical students each contributed 170 (50%). Majority was female (64.1%). About two-thirds (60.6%) was Malay, followed by Chinese (31.2%) and Indian (7.1%). Pre-clinical students were significantly more stigmatizing in subscale of "attitudes towards imposed measures" (t=3.917, p<0.001), even with adjustment for previous encounter and ethnicity (B= 1.2, 95% CI 0.48 to 1.83, p=0.001). On the other hand, clinical students were found to be significantly less comfortable in handling HIV/AIDS cases (t=0.039, p=0.039), even after controlled for previous encounter and ethnicity (B=0.6, 95% CI 0.29 to 0.98, p< 0.001).
    CONCLUSION: Clinical encounter with PLWHA was associated with higher knowledge in HIV/AIDS. Medical students in preclinical years were having stigmatizing attitude towards imposed measures compared to the clinical years who had more stigmatizing attitude in being less comfortable with PLWHA.
  3. Chew B, Mastura I, Cheong A, Syed Alwi S
    Malays Fam Physician, 2010;5(3):134-9.
    PMID: 25606205 MyJurnal
    INTRODUCTION: Hypertension is a common co-morbidity in diabetes mellitus (DM) that may lead to serious complications if not adequately controlled.

    METHOD: This is a descriptive study based on data from the Audit of Diabetes Control and Management (ADCM) registry. This audit assessed the treatment and standard of control of hypertension in diabetic patients aged 18 years and above. Data were analysed using STATA version 9.

    RESULTS: From a total of 20 646 cases, about two third of them, 13 417 (65%) were reported to have hypertension. 19 484 (94.4%) had their blood pressure (BP) recorded and out of these, 11 414 (58.5%) were found to have BP >130/80 mmHg. 13 601 cases (65.9%) of the total sample were on antihypertensive drugs. 64.1% of those on antihypertensive drugs were prescribed angiotensin-converting enzyme inhibitors (ACEI) or angiotensin II receptor blockers. 14.2% were on more than two types of antihypertensive drugs. Older patients and those with longer duration of DM were less likely to achieve the target BP of ≤130/80. In general, about 40% of diabetic cases registered in the ADCM project had their hypertension well controlled.

  4. Chew BH, Mastura I, Lee PY, Wahyu TS, Cheong AT, Zaiton A
    Med J Malaysia, 2011 Aug;66(3):244-8.
    PMID: 22111449 MyJurnal
    Ethnicity is an important factor in diabetes care. The understanding of its effect in this country may help to improve diabetes care, glycaemic control and diabetic complication rates. This study was to determine the diabetes control profile in relation to complication rates between the three main ethnics group in Malaysia.
  5. Salim H, Shariff Ghazali S, Lee PY, Cheong AT, Harrun NH, Mohamed Isa S, et al.
    BMC Public Health, 2021 06 22;21(1):1186.
    PMID: 34158013 DOI: 10.1186/s12889-021-11194-w
    BACKGROUND: Limited health literacy among people with asthma is associated with poor adherence to self-management activities, thus poor clinical outcomes. This study aimed to determine the prevalence of health literacy level and its determinants among people with asthma in the Malaysian primary healthcare settings.

    METHOD: A cross-sectional study was conducted among participants aged > 18 years with asthma who attended five primary health clinics in Malaysia. Systematic random sampling was employed with a final sample of 550 participants. The questionnaires included the validated Malay version of Health Literacy Scale (HLS) and asthma control questionnaire (ACQ). Statistical analysis was done using SPSS version 25. Multiple logistic regression was performed to determine the determinants for limited health literacy.

    RESULTS: The participants mean age of the participants was 48 (SD15.4) years. Most of the participants were women (64%) and of Malay ethnicity (51.1%). Nearly half had a secondary level of education, n = 112, (45.8%). Mean duration of asthma diagnosis is 20.6 (SD 15.9) years. More than half (62.5%) had a family history of asthma. About half (50.9%) had uncontrolled asthma, with 87.3% self-rated themselves as having controlled asthma. About a third (29.1%) received education on of asthma action plan, but only 7.1% of these owned a written version an asthma action plan. Limited health literacy accounts for 60.5% of the participants. The significant determinants for limited health literacy included lower educational attainment (p 

  6. Cheong AT, Liew SM, Khoo EM, Mohd Zaidi NF, Chinna K
    BMC Fam Pract, 2017 Jan 17;18(1):4.
    PMID: 28095788 DOI: 10.1186/s12875-016-0579-8
    BACKGROUND: Cardiovascular disease (CVD) is the leading cause of death globally. However, many individuals are unaware of their CVD risk factors. The objective of this systematic review is to determine the effectiveness of existing intervention strategies to increase uptake of CVD risk factors screening.

    METHODS: A systematic search was conducted through Pubmed, CINAHL, EMBASE and Cochrane Central Register of Controlled Trials. Additional articles were located through cross-checking of the references list and bibliography citations of the included studies and previous review papers. We included intervention studies with controlled or baseline comparison groups that were conducted in primary care practices or the community, targeted at adult populations (randomized controlled trials, non-randomized trials with controlled groups and pre- and post-intervention studies). The interventions were targeted either at individuals, communities, health care professionals or the health-care system. The main outcome of interest was the relative risk (RR) of screening uptake rates due to the intervention.

    RESULTS: We included 21 studies in the meta-analysis. The risk of bias for randomization was low to medium in the randomized controlled trials, except for one, and high in the non-randomized trials. Two analyses were performed; optimistic (using the highest effect sizes) and pessimistic (using the lowest effect sizes). Overall, interventions were shown to increase the uptake of screening for CVD risk factors (RR 1.443; 95% CI 1.264 to 1.648 for pessimistic analysis and RR 1.680; 95% CI 1.420 to 1.988 for optimistic analysis). Effective interventions that increased screening participation included: use of physician reminders (RR ranged between 1.392; 95% CI 1.192 to 1.625, and 1.471; 95% CI 1.304 to 1.660), use of dedicated personnel (RR ranged between 1.510; 95% CI 1.014 to 2.247, and 2.536; 95% CI 1.297 to 4.960) and provision of financial incentives for screening (RR 1.462; 95% CI 1.068 to 2.000). Meta-regression analysis showed that the effect of CVD risk factors screening uptake was not associated with study design, types of population nor types of interventions.

    CONCLUSIONS: Interventions using physician reminders, using dedicated personnel to deliver screening, and provision of financial incentives were found to be effective in increasing CVD risk factors screening uptake.

  7. Chew BH, Shariff-Ghazali S, Lee PY, Cheong AT, Mastura I, Haniff J, et al.
    Med J Malaysia, 2013 Oct;68(5):397-404.
    PMID: 24632869 MyJurnal
    INTRODUCTION: Diabetes care at different healthcare facilities varied from significantly better at one setting to no difference amongst them. We examined type 2 diabetes patient profiles, disease control and complication rates at four public health facilities in Malaysia.
    MATERIALS AND METHODS: This study analyzed data from diabetes registry database, the Adult Diabetes Control and Management (ADCM). The four public health facilities were hospital with specialist (HS), hospital without specialist (HNS), health clinics with family physicians (CS) and health clinic without doctor (CND). Independent risk factors were identified using multivariate regression analyses.
    RESULTS: The means age and duration of diabetes in years were significantly older and longer in HS (ANOVA, p< 0.0001). There were significantly more patients on insulin (31.2%), anti-hypertensives (80.1%), statins (68.1%) and antiplatelets (51.2%) in HS. Patients at HS had significantly lower means BMI, HbA1c, LDL-C and higher mean HDL-C. A significant larger proportion of type 2 diabetes patients at HS had diabetes-related complications (2-5 times). Compared to the HS, the CS was more likely to achieve HbA1c ≤ 6.5% (adjusted OR 1.2) and BP target < 130/80 mmHg (adjusted OR 1.4), the HNS was 3.4 times more likely not achieving LDL-C target < 2.6 mmol/L.
    CONCLUSION: Public hospitals with specialists in Malaysia were treating older male Chinese type 2 diabetes patients with more complications, and prescribed more medications. Patients attending these hospitals achieved better LDL-C target but poorer in attaining BP and lower HbA1c targets as compared to public health clinics with doctors and family physicians.
  8. Pang YK, Ismail AI, Chan YF, Cheong A, Chong YM, Doshi P, et al.
    BMC Infect Dis, 2021 Jul 05;21(1):644.
    PMID: 34225647 DOI: 10.1186/s12879-021-06360-9
    BACKGROUND: Available data on influenza burden across Southeast Asia are largely limited to pediatric populations, with inconsistent findings.

    METHODS: We conducted a multicenter, hospital-based active surveillance study of adults in Malaysia with community-acquired pneumonia (CAP), acute exacerbation of chronic obstructive pulmonary disease (AECOPD) and acute exacerbation of asthma (AEBA), who had influenza-like illness ≤10 days before hospitalization. We estimated the rate of laboratory-confirmed influenza and associated complications over 13 months (July 2018-August 2019) and described the distribution of causative influenza strains. We evaluated predictors of laboratory-confirmed influenza and severe clinical outcomes using multivariate analysis.

    RESULTS: Of 1106 included patients, 114 (10.3%) were influenza-positive; most were influenza A (85.1%), with A/H1N1pdm09 being the predominant circulating strain during the study following a shift from A/H3N2 from January-February 2019 onwards. In multivariate analyses, an absence of comorbidities (none versus any comorbidity [OR (95%CI), 0.565 (0.329-0.970)], p = 0.038) and of dyspnea (0.544 (0.341-0.868)], p = 0.011) were associated with increased risk of influenza positivity. Overall, 184/1106 (16.6%) patients were admitted to intensive care or high-dependency units (ICU/HDU) (13.2% were influenza positive) and 26/1106 (2.4%) died (2.6% were influenza positive). Males were more likely to have a severe outcome (ICU/HDU admission or death).

    CONCLUSIONS: Influenza was a significant contributor to hospitalizations associated with CAP, AECOPD and AEBA. However, it was not associated with ICU/HDU admission in this population. Study registration, NMRR ID: NMRR-17-889-35,174.

  9. Jalil NB, Lee PY, Nor Afiah MZ, Abdullah KL, Azizi FNSM, Rassip NNSA, et al.
    J Cancer Educ, 2022 Feb;37(1):169-178.
    PMID: 32564251 DOI: 10.1007/s13187-020-01801-6
    There are several treatment options for localized prostate cancer with very similar outcome but vary in terms of technique and side effect profiles and risks. Considering the potential difficulty in choosing the best treatment, a patient decision aid (PDA) is used to help patients in their decision-making process. However, the use and applicability of PDA in a country in Asia Pacific region like Malaysia is still unknown. This study aims to evaluate the effectiveness of a PDA modified to the local context in improving patients' knowledge, decisional conflict, and preparation for decision making among men with localized prostate cancer. Sixty patients with localized prostate cancer were randomly assigned to control and intervention groups. A self-administered questionnaire, which evaluate the knowledge on prostate cancer (23 items), decisional conflict (10 items) and preparation for decision-making (10 items), was given to all participants at pre- and post-intervention. Data were analyzed using independent T test and paired T test. The intervention group showed significant improvement in knowledge (p = 0.02) and decisional conflict (p = 0.01) from baseline. However, when compared between the control and intervention groups, there were no significant differences at baseline and post-intervention on knowledge, decisional conflict and preparation for decision-making. A PDA on treatment options of localized prostate cancer modified to the local context in an Asia Pacific country improved patients' knowledge and decisional conflict but did not have significant impact on the preparation for decision-making. The study was also registered under the Australian New Zealand Clinical Trials Registry (ANZCTR), ACTRN12614000668606 registered on 25/06/2014.
  10. Wan Puteh SE, Aazmi MS, Aziz MN, Kamarudin N', Sam JI, Thayan R, et al.
    PLoS One, 2024;19(3):e0301068.
    PMID: 38517867 DOI: 10.1371/journal.pone.0301068
    BACKGROUND AND OBJECTIVES: While influenza circulates year-round in Malaysia, research data on its incidence is scarce. Yet, this information is vital to the improvement of public health through evidence-based policies. In this cross-sectional study, we aimed to determine the trends and financial costs of influenza.

    METHODS: Data for the years 2016 through 2018 were gathered retrospectively from several sources. These were existing Ministry of Health (MOH) influenza sentinel sites data, two teaching hospitals, and two private medical institutions in the Klang Valley, Malaysia. Expert consensus determined the final estimates of burden for laboratory-confirmed influenza-like illness (ILI) and severe acute respiratory infection (SARI). Economic burden was estimated separately using secondary data supplemented by MOH casemix costing.

    RESULTS: Altogether, data for 11,652 cases of ILI and 5,764 cases of SARI were extracted. The influenza B subtype was found to be predominant in 2016, while influenza A was more prevalent in 2017 and 2018. The distribution timeline revealed that the highest frequency of cases occurred in March and April of all three years. The costs of influenza amounted to MYR 310.9 million over the full three-year period.

    CONCLUSIONS: The study provides valuable insights into the dynamic landscape of influenza in Malaysia. The findings reveal a consistent year-round presence of influenza with irregular seasonal peaks, including a notable influenza A epidemic in 2017 and consistent surges in influenza B incidence during March across three years. These findings underscore the significance of continuous monitoring influenza subtypes for informed healthcare strategies as well as advocate for the integration of influenza vaccination into Malaysia's national immunization program, enhancing overall pandemic preparedness.

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