Displaying all 9 publications

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  1. Chan GC
    Singapore Med J, 2005 Mar;46(3):127-31.
    PMID: 15735877
    A study was conducted at primary healthcare level in the Melaka Tengah district of Malaysia to determine whether hypertension in patients with type 2 diabetes mellitus were managed according to guidelines.
  2. Chan GC, Teng CL
    Med J Malaysia, 2005 Jun;60(2):130-3.
    PMID: 16114151
    A cross sectional study using a self-administered questionnaire to determine the perceptions of primary care doctors towards evidence-based medicine (EBM) was conclucted in Melaka state. About 78% of the primary care doctors were aware of EBM and agreed it could improve patient care. Only 6.7% of them had ever conducted a Medline literature search. They had a low level of awareness of review publications and databases relevant to EBM; only about 33% of them were aware of the Cochrane Database of Systemic Reviews. Over half of the respondents had at least some understanding of the technical terms used in EBM. Ninety percent of the respondents had Internet access and the majority of them used it at home. The main barriers to practicing EBM were lack of personal time and lack of Internet access in the primary care clinics.
  3. Chan GC, Tang SF
    Singapore Med J, 2006 Apr;47(4):266-70.
    PMID: 16572235
    INTRODUCTION: A study was carried out in a primary healthcare clinic in the Hulu Langat district of Malaysia to assess the parental knowledge, attitudes and antibiotic use for common childhood acute upper respiratory tract infection (URTI).
    METHODS: A cross-sectional study involving 421 parents, who were surveyed by using an interviewer-administered questionnaire, from April to June 2001.
    RESULTS: Approximately 59 percent of parents from this study believed that weather was the main cause of acute URTI of their children, 13 percent thought it was due to food, and only about 27 percent said it was caused by germs. Nearly 68 percent, 69 percent and 76 percent of them believed that antibiotics was helpful in treating the common cold, cough and fever, respectively. 29 percent of parents who thought that their child with acute URTI needed antibiotics were not prescribed with any. On the other hand, 17 percent believed that antibiotics were unnecessary when prescribed. 28 percent of parents had requested for antibiotics, and 93 percent received what they requested for their child with acute URTI. About 31 percent of parents who did not request any antibiotics claimed that private general practitioners habitually prescribed antibiotics. The antibiotic compliance was poor with only 74 percent completing the entire course, with 85 percent of them stopping once they improved symptomatically. 15 percent of parents gave "leftover" antibiotics, 24 percent gave "shared" antibiotics, and 5.5 percent bought antibiotics for their child with acute URTI without consulting a doctor.
    CONCLUSION: This study shows that parents often have inadequate knowledge and misconceptions on antibiotic use for acute URTI in children. Improved parental education may reduce unnecessary antibiotic prescription and antimicrobial resistance in the community.
    Study site: Klinik Kesihatan Batu 9, Hulu Langat, Selangor, Malaysia
  4. Chan GC, Ghazali O, Khoo EM
    Med J Malaysia, 2005 Dec;60(5):578-84.
    PMID: 16515108
    A cross-sectional study was conducted among 517 patients with diabetes mellitus at all health centres in Melaka Tengah District to examine whether these patients and their associated cardiovascular risk factors were managed according to current guidelines. All patients had Type 2 diabetes mellitus with mean age of 57.9 +/- 10.5 years and the mean duration of diabetes was 7.2 +/- 6.0 years. The glycaemic control was poor with 53.6% of the patients having HbAlc above 8% (mean = 8.5%) and 24% of them had microalbuminuria. Among these patients with poor glycaemic control, about 47.6% of them were on monotherapy. Three hundred and fifty (67.7%) patients had hypertension but only 11 (3.1%) achieved target blood pressure of less than 130/80 mmHg. Only 18.3% of the diabetics with hypertension were prescribed angiotensin converting enzyme inhibitors and 0.3% with angiotensin receptor blockers. Nearly two-third of them had low-density lipoprotein cholesterol greater than 2.6 mmol/l (mean = 3.4 mmol/l) but only 6.8% were prescribed lipid-lowering agents. Aspirin was prescribed to 8.2% of diabetics aged above 40 years. Sixteen percent of the patients smoked, 53% did not do any exercise, and the mean BMI was 26.8 kg/mn. The management of diabetes mellitus and its associated cardiovascular risk factors was suboptimal on the basis of current clinical guidelines. A greater effort in educating doctors in the health centres about these management and adherence to the guidelines is important in reducing patients' risk of cardiovascular disease and its associated morbidity and mortality.
  5. Tan KC, Chan GC, Eric H, Maria AI, Norliza MJ, Oun BH, et al.
    Malays Fam Physician, 2015;10(2):9-21.
    PMID: 27099657 MyJurnal
    Background: The incidence of diabetes mellitus is ever increasing. Individuals with diabetes mellitus may have concurrent mental health disorders and are shown to have poorer disease outcomes. The objectives of this study were to determine the prevalence of depression, anxiety and stress (DAS) in diabetes patients aged 20 years or more in the primary care setting.
    Methods: This was a cross-sectional study involving the use of self-administered questionnaire conducted in eight primary care private and government clinics in Pulau Pinang and Melaka, Malaysia. The validated DASS-21 questionnaire was used as a screening tool for the symptoms of DAS. Prior permission was obtained from the patients and, clearance from ethical committee was obtained before the start of the study. Data analysis was done using SPSS statistical software.
    Results: A total of 320 patients with diabetes from eight centres were enrolled via convenience sampling. Sample size was calculated using the Kish’s formula. The prevalence of DAS among patients with diabetes from our study was 26.6%, 40% and 19.4%, respectively. Depression was found to be significantly associated with marital status and family history of DAS; anxiety was significantly
    associated with monthly household income, presence of co-morbidities and family history of DAS; and stress was significantly associated with occupation and family history of DAS.
    Conclusions: The prevalence of DAS was higher in patients with diabetes compared with the general community. We recommend to routinely screen all patients with diabetes using the DASS-21 questionnaire because it is easy to perform and inexpensive.
  6. Teo BW, Zhang L, Guh JY, Tang SCW, Jha V, Kang DH, et al.
    Adv Chronic Kidney Dis, 2018 01;25(1):41-48.
    PMID: 29499886 DOI: 10.1053/j.ackd.2017.10.005
    The National Kidney Foundation Kidney Disease Outcomes Quality Initiative guidelines recommended the Modification of Diet in Renal Disease study equation for estimating glomerular filtration rate (GFR) for the classification of CKD, but its accuracy was limited to North American patients with estimated GFR <60 mL/min per 1.73 m2 body surface area of European (White) or African (Black) descent. The Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) developed another equation for estimating GFR, derived from a population that included both participants without kidney disease and with CKD. But many ethnicities were inadequately represented. The International Society of Nephrology, Kidney Disease Improving Global Outcomes committee promulgated clinical practice guidelines, which recommended the CKD-EPI equation. Investigators in Asia subsequently assessed the performance of these GFR estimating equations-the Modification of Diet in Renal Disease study equation, the CKD-EPI equation (creatinine only), and the CKD-EPI equations (creatinine and cystatin C). In this review, we summarize the studies performed in Asia on validating or establishing new Asian ethnicity GFR estimating equations. We included both prospective and retrospective studies which used serum markers traceable to reference materials and focused the review of the performance of GFR estimation by comparisons with the GFR estimations obtained from the CKD-EPI equations.
  7. Chan GC, Teo BW, Tay JC, Chen CH, Cheng HM, Wang TD, et al.
    J Clin Hypertens (Greenwich), 2021 Mar;23(3):522-528.
    PMID: 33340436 DOI: 10.1111/jch.14140
    The prevalence of hypertension varies by country and region, but it remains a leading yet modifiable risk factor of cardiovascular disease. There are many factors that contribute to the burden of hypertension in Asia, a region with diverse ethnicity. It has been shown that sociodemographic variability is related to ethnic differences, thereby emphasizing the importance of hypertension screening and educating at-risk or vulnerable groups. In this review, we describe the ethnic differences in genetic variants, dietary choice, and lifestyle habits, as well as its association with sociodemographic differences, hypertension awareness, and treatment control.
  8. Teo BW, Chan GC, Leo CCH, Tay JC, Chia YC, Siddique S, et al.
    J Clin Hypertens (Greenwich), 2021 03;23(3):475-480.
    PMID: 33538081 DOI: 10.1111/jch.14188
    The countries of Asia are home to multiple ethnicities. There are ethnic differences in diet, culture, and attitudes towards health screening, access to care, and treatment of chronic diseases. Chronic kidney disease (CKD) and end-stage kidney disease (ESKD) have rising incidence and prevalence due to increased affliction with non-communicable diseases of diabetes and hypertension. To prevent the expensive complications of ESKD, one of the most important risk factors to control is hypertension in patients with CKD. We performed a narrative review on the prevalence of CKD in patients with hypertension, the prevalence and control of hypertension in patients with CKD, and the dietary sodium intake in CKD populations.
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