Displaying publications 1 - 20 of 28 in total

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  1. Tan AK, Mallika PS
    Malays Fam Physician, 2011;6(2-3):97-8.
    PMID: 25606235 MyJurnal
    Coining is a technique used in treating many illnesses since ancient times. It is a form of dermabrasion therapy still widely practiced in China and South East Asia. This ancient treatment method is employed to rid the body of "heatiness" or "negative energies". Coining is associated with serious complications, and has been confused with child abuse by physicians unfamiliar to Asian cultures. Despite the availability of more simple and effective treatment for fever, coining is still widely practiced among Asians.
  2. Yen ST, Tan AK
    Int J Public Health, 2012 Dec;57(6):945-51.
    PMID: 22331314 DOI: 10.1007/s00038-012-0343-3
    OBJECTIVE: To investigate the roles of sociodemographic factors in fruit and vegetable (FV) consumption in Malaysia.

    METHODS: Data are obtained from the Malaysia Non-Communicable Disease Surveillance-1. Logistic regressions are conducted using a multiracial (Malay, Chinese, Indian and other ethnic groups) sample of 2,447 observations to examine the factors affecting individual decisions to consume FV on a daily basis.

    RESULTS: Based on the binary outcomes of whether individuals consumed FV daily, results indicate that work hours, education, age ethnicity, income, gender, smoking status, and location of residence are significantly correlated with daily fruit consumption. Daily vegetable consumption is significantly correlated with income, gender, health condition, and location of residence.

    CONCLUSIONS: Our results imply the need for programs to educate and motivate consumers to make healthier dietary choices. Interventions to increase FV consumption by changing behaviors should be considered, as should those that increase public awareness of the dietary benefits of FV. These intervention programs should be targeted at and tailored toward individuals who are less educated, younger, less affluent, males, smokers, and metropolitan dwellers.

  3. Dunn RA, Tan AK
    Breast J, 2011 Jul-Aug;17(4):399-402.
    PMID: 21615819 DOI: 10.1111/j.1524-4741.2011.01098.x
    As is the case in many developing nations, previous studies of breast cancer screening behavior in Malaysia have used relatively small samples that are not nationally representative, thereby limiting the generalizability of results. Therefore, this study uses nationally representative data from the Malaysia Non-Communicable Disease Surveillance-1 to investigate the role of socio-economic status on breast cancer screening behavior in Malaysia, particularly differences in screening behaviour between ethnic groups. The decisions of 816 women above age 40 in Malaysia to screen for breast cancer using mammography, clinical breast exams (CBE), and breast self-exams (BSE) are modeled using logistic regression. Results indicate that after adjusting for differences in age, education, household income, marital status, and residential location, Malay women are less likely than Chinese and Indian women to utilize mammography, but more likely to perform BSE. Education level and urban residence are positively associated with utilization of each method, but these relationships vary across ethnicity. Higher education levels are strongly related to using each screening method among Chinese women, but have no statistically significant relationship to screening among Malays.
  4. Tan AK, Faridah Hanom A
    Malays Fam Physician, 2010;5(3):115-118.
    PMID: 25606202 MyJurnal
    To describe a quick and simple diagnostic approach to monocular diplopia. Diplopia is a common visual complain in casualty departments, general practice clinics, neurologic clinics as well as ophthalmic clinics. Monocular diplopia, however, is uncommon. Many well established clinical examination methods are available to address diplopia. Some require special equipments which are not easily available or unfamiliar outside of ophthalmic clinic. We describe a simple two-minute diagnostic approach to monocular diplopia. Basic knowledge and understanding of simple clinical examination techniques enhances diagnostic skill and allow proper localization of underlying disorders.
  5. Tan AK, Azman A, Hoe TS, Rohana T
    Med J Malaysia, 1994 Dec;49(4):409-11.
    PMID: 7674978
    A six-year-old boy, a known case of acute lymphoblastic leukaemia (ALL) on remission since 1991 presented with leukocoria and poor vision of the left eye for two days' duration. Examination revealed endophthalmitis in the left eye with raised intraocular pressure. Anterior chamber paracentesis with vitreous biopsy confirmed a diagnosis of ocular involvement. Further investigation revealed that he also had bone marrow and central nervous system relapse. Clinical manifestation and treatment modalities of ocular involvement in leukaemia are discussed.
  6. Dunn RA, Tan AK, Nayga RM
    Ethn Health, 2012;17(5):493-511.
    PMID: 22360320 DOI: 10.1080/13557858.2012.661407
    OBJECTIVE: Obesity prevalence is unequally distributed across gender and ethnic group in Malaysia. In this paper, we examine the role of socioeconomic inequality in explaining these disparities.
    DESIGN: The body mass index (BMI) distributions of Malays and Chinese, the two largest ethnic groups in Malaysia, are estimated through the use of quantile regression. The differences in the BMI distributions are then decomposed into two parts: attributable to differences in socioeconomic endowments and attributable to differences in responses to endowments.
    RESULTS: For both males and females, the BMI distribution of Malays is shifted toward the right of the distribution of Chinese, i.e., Malays exhibit higher obesity rates. In the lower 75% of the distribution, differences in socioeconomic endowments explain none of this difference. At the 90th percentile, differences in socioeconomic endowments account for no more than 30% of the difference in BMI between ethnic groups.
    CONCLUSIONS: Our results demonstrate that the higher levels of income and education that accrue with economic development will likely not eliminate obesity inequality. This leads us to conclude that reduction of obesity inequality, as well the overall level of obesity, requires increased efforts to alter the lifestyle behaviors of Malaysians.
  7. Yen ST, Tan AK, Feisul MI
    Asia Pac J Public Health, 2015 Mar;27(2):NP2635-50.
    PMID: 23007483 DOI: 10.1177/1010539512458523
    This study examines the sociodemographic factors associated with daily fruit and vegetable (FV) consumption in Malaysia. Based on a cross-sectional sample of 2447 individuals from the Malaysia Non-Communicable Disease Surveillance-1, a multivariate sample selection system is developed and estimated, to accommodate high frequencies of daily FV consumption and the days of servings among nondaily consumers. Results indicate that the authors' attempt to account for endogenous sample selectivity and cross-equation correlations is justified. There exist positive correlations between FV consumption likelihoods and longer work hours, higher levels of education, high income, female gender, nonsmoking status, and being from East Malaysia. Among nondaily consumers, those with longer work hours, singles, and people with diabetes are less inclined to eat fruits on more days. Overall, higher-educated, affluent people, nonsmokers, and East Malaysians display more days of FV consumption. Based on these outcomes, several policy implications are recommended vis-à-vis FV consumption patterns in Malaysia.
  8. Asok T, Aziz S, Faisal HA, Tan AK, Mallika PS
    Med J Malaysia, 2009 Dec;64(4):323-4.
    PMID: 20954560 MyJurnal
    A 14 year old boy underwent a 7 hour long spinal surgery for scoliosis in the prone position. In the immediate postoperative period, he developed right proptosis, periorbital swelling, chemosis and total ophthalmoplegia. The vision in his right eye was only counting fingers and the intraocular pressure was 68 mmHg. Fundus examination revealed occlusion of the right central retinal artery. A rare manifestation of both vein and artery occlusion was possible in this patient as a result of external ocular compression due to a prolonged period in the prone position. This report highlights the importance of being aware of the possible complications of external ocular compression in non-ocular surgery.
  9. Tan AK, Dunn RA, Samad MI, Feisul MI
    Asia Pac J Public Health, 2011 Apr;23(2):192-202.
    PMID: 20460299 DOI: 10.1177/1010539509359535
    The purpose of this study was to examine the sociodemographic and health-lifestyle factors that affect the likelihood of obesity among Malaysians. Data were obtained from the Malaysian Non-Communicable Disease Surveillance-1. The cross-sectional population-based survey consisted of 2447 observations, with an obesity prevalence rate of 17.2%. Based on logit regression analysis, the results suggest that obesity risks in Malaysia are affected by gender, education level, family history, health conditions, smoking status, and ethnic backgrounds. Specifically, Malaysians more likely to be obese are females (5.3%), lower educated (0.9%), those with history of family illnesses (4.8%), and nonsmokers (6.4%). However, Chinese (9.3%) and other (5.5%) ethnic groups are less likely to be obese when compared with Malays. Based on these results, several policy implications are discussed vis-à-vis obesity risks in Malaysia.
    Study name: Malaysia Non-Communicable Disease Surveillance-1 (MyNCDS-1) survey
  10. Tan AK, Yen ST, Feisul MI
    Int J Public Health, 2012 Apr;57(2):279-88.
    PMID: 21318327 DOI: 10.1007/s00038-011-0238-8
    OBJECTIVE: To investigate the roles of sociodemographic and health lifestyle factors in affecting body mass index (BMI) across ethnic groups in Malaysia.

    METHODS: Data are obtained from 2,436 observations from the Malaysia Non-Communicable Disease Surveillance-1. The multi-ethnic sample is segmented into Malay, Chinese, and Indian/other ethnicities. Ordered probit analysis is conducted and marginal effects of sociodemographic and health lifestyle variables on BMI calculated.

    RESULTS: Malays between 41 and 58 years are more likely to be overweight or obese than their 31-40 years counterparts, while the opposite is true among Chinese. Retirees of Chinese and Indian/other ethnicities are less likely to be obese and more likely to have normal BMI than those between 31 and 40 years. Primary educated Chinese are more likely to be overweight or obese, while tertiary-educated Malays are less likely to suffer from similar weight issues as compared to those with only junior high school education. Affluent Malays and Chinese are more likely to be overweight than their low-middle income cohorts. Family illness history is likely to cause overweightness or obesity, irrespective of ethnicity. Malay cigarette smokers have lower overweight and obesity probabilities than non-cigarette smokers.

    CONCLUSIONS: There exists a need for flexible policies to address cross-ethnic differences in the sociodemographic and health-lifestyle covariates of BMI.

  11. Tan AK, Mallika PS, Asokumaran T, Mohamad Aziz S, Intan G
    Malays Fam Physician, 2011;6(2-3):68-71.
    PMID: 25606227 MyJurnal
    To evaluate the demography, aetiology, type and outcome of paediatric ocular trauma in tertiary centre in Malaysia.
  12. Tan AK, Mallika P, Md Aziz S, Asokumaran T, Intan G
    Malays Fam Physician, 2009;4(1):26-29.
    PMID: 25606155 MyJurnal
    A forty-two year old lady presented with gradual, painless, progressive blurring of vision of her left eye for four months. There were no other associated ocular or systemic complaints. Examination showed decreased visual acuity in both eyes and a pale optic disc on the left side. Visual field examination revealed a temporal field defect of the right eye which aroused the suspicion of an intracranial mass lesion. MRI of her brain revealed a suprasellar meningioma. We would like to emphasize the importance of visual field examination of both eyes in patients presenting with unilateral loss of vision.
  13. Tan AK, Mallika P, Md Aziz S, Asokumaran T, Intan G
    Malays Fam Physician, 2008;3(2):87-90.
    PMID: 25606123 MyJurnal
    Purpose. To highlight the importance of using the Farnsworth Panel D-15 Hue test in colour vision testing in patients on ethambutol treatment. Case Report. A 70 year-old lady received ethambutol as part of her anti-tuberculous regime. She developed blue-yellow colour defect detectable with the Farnsworth Panel D-15 Hue test, but not with the Isihara Pseudoisochromatic Plates. Ethambutol was immediately discontinued from her anti-tuberculous regime. Two months later, her colour vision returned to normal. Conclusion. This case report illustrates the importance of regular monitoring of patients receiving ethambutol for blue-yellow colour defect using the Farnsworth Panel D-15 Hue Test.
  14. Mallika P, Tan A, Asok T, Faisal H, Aziz S, Intan G
    Malays Fam Physician, 2008;3(3):140-5.
    PMID: 25606139 MyJurnal
    OBJECTIVES: To analyze the causes and characteristics of ocular injuries presenting to Sarawak General Hospital (SGH), Kuching.

    DESIGN: It is a prospective hospital-based study done for a period of 1 year.

    SETTING: Department of Ophthalmology, Sarawak General Hospital, Malaysia.

    PARTICIPANTS: All ocular injury patients seen for the first time in the Eye Department during the period January 2006 to December 2006 were included in the study. Eye injury patients on follow-up and treated elsewhere were excluded.

    RESULTS: A total of 233 patients, and 257 eyes, were studied. Men had six-fold higher rates of injury than women. The average age of presentation was 30 years. The predominant age group was between 21-30 years, 26.2 % (n=61). Eye injuries related to work were seen in 36.9% of patients. There was a gross negligence in the use of personal protective devices in the work-related group. The common settings in which the injuries occurred included home 34.3% (n=80) and industrial premises 31.8% (n=74). Assault-related injuries 7.7% (n=18) were seen mostly among young men in the age between 20-30 years. The initial presenting visual acuity of the patients with blunt ocular trauma was better than penetrating injury.

    CONCLUSION: Ocular injuries were common in young males. Work related eye injuries were noted in a significant number of cases. Health education and preventive strategies both in the working place and at home will help to decrease the occurrence of ocular injuries.

  15. Mallika PS, Aziz S, Goh PP, Lee PY, Cheah WL, Chong MS, et al.
    Med J Malaysia, 2012 Aug;67(4):369-74.
    PMID: 23082443
    This study aims to determine the risk factors associated with diabetic retinopathy (DR) among natives and non-natives Sarawakians who were seen at 3 public hospitals and one health clinic in Sarawak. It is a cross sectional study where data on patients with DM were collected by staff at these healthcare facilities and entered into the web-based Diabetic Eye Registry. Univariate and multivariate analysis was used to determine the association factors for DR. DR was significantly less associated with natives (24.4%) compared to non-native Sarawakians (34.1%) (p < 0.001). The odds of getting DR was higher in patients whose duration of DM was more than 20 years (OR = 2.6), who have renal impairment (OR = 1.7) and non-natives (OR = 1.4).
  16. Mallika PS, Chong YJ, Tan AK, Tang IP, Aziz S, Lee HK
    Med J Malaysia, 2011 Oct;66(4):361-2.
    PMID: 22299559 MyJurnal
    Intraorbital foreign bodies (IOrbFB) are associated with both sight and life threatening injuries. We report a case of an IOrbFB associated with retrobulbar hemorrhage and injury of the frontal sinus in an 11 year-old boy, after history of fall from the tree. Imaging studies revealed a metallic foreign body (FB) in the orbit and fracture of the walls of the frontal sinus. The usual entry route of an IOrbFB is either through the eye or orbital walls and extremely rare through the paranasal sinuses. This is the first reported case of a FB entering the orbit through the frontal sinus.
  17. Tan AK, Mallika P. S., Aziz S, Asokumaran T, Intan G, Faridah HA
    Malays Fam Physician, 2010;5(2):83-90.
    PMID: 25606193 MyJurnal
    OBJECTIVE: To determine the sensitivity and specificity of the conventional direct ophthalmoscope and the PanOptic ophthalmoscope in the detection of sight threatening retinopathy, as well as the "Ease of Use" of these equipments.
    METHODS: 200 diabetics, newly referred from primary health physicians were examined. Fundus examinations were performed with pupil dilatation in a dark room. The examinations were performed by a single investigator using the PanOptic ophthalmoscope, the conventional direct ophthalmoscope and slit lamp biomicroscopy.
    RESULTS: The overall sensitivity in detecting sight threatening retinopathy using the conventional direct ophthalmoscope was 73.2% (95% CI: 57.1-85.8%), specificity 93.7% (95% CI: 88.7-96.9%). For PanOptic ophthalmoscope, the overall sensitivity in detecting sight threatening retinopathy was 58.5% (95% CI: 42.1-73.7%), specificity 93.7% (95% CI: 88.7-96.9%). The conventional direct ophthalmoscope was 1.38 times (95% CI: 1.17-1.61 times) as easy to use compared to the PanOptic ophthalmoscope.
    CONCLUSION: The PanOptic ophthalmoscope is not superior to the conventional direct ophthalmoscope for the screening of Sight Threatening Retinopathy.
    KEYWORDS: PanOptic ophthalmoscope; conventional direct ophthalmoscope; sight threatening retinopathy
    Study site: Ophthalmology clinic, Sarawak General Hospital, Kuching, Sarawak, Malaysia
  18. Ngo CT, Alhady M, Tan AK, Norlasiah IS, Ong GB, Chua CN
    Med J Malaysia, 2007 Mar;62(1):74-5.
    PMID: 17682579
    A 3-year-old girl with facial dysmorphic features suggestive of Cornelia de Lange syndrome was seen in the ophthalmology unit for a right leukocoria. The leukocoria was found to be caused by a large retinoblastoma and the right eye was enucleated. Chromosomal analysis revealed partial chromosome 13q deletion involving band 14 which is associated with a high risk of retinoblastoma. This case shows that patient with chromosome 13q deletion syndrome cannot be diagnosed based on dysmorphic features only. Chromosomal analysis is warranted in all infants with facial dysmorphism suggestive of Cornelia de Lange syndrome so that those with chromosome 13q deletion can be referred early for early detection of retinoblastoma.
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