1.Interleukin-28 Polymorphism: Ethnic variations and the response to chronic hepatitis C treatment in Malaysia
Chee-Hoong HOE ; Mohd Azri Mohd Suan ; Chee-Hock HOE ; Thean-Hock TANG ; Kuang-Kiat KIEW ; Muhammad Radzi Abu Hassan ; Huan-Keat CHAN
The Medical Journal of Malaysia 2018;73(4):260-260
comprehensive overview of chronic hepatitis C (CHC)management.1 The author highlighted the concern over theexorbitant cost of direct-acting antivirals, which is the reason for their limited use in Malaysia currently. Based on the findings of the previous studies, the author also underlined that Asians receiving the conventional, interferon-based treatment generally have a higher sustained virological response (SVR) rate as compared with Caucasians and African Americans, mainly due to the interleukin-28B (IL28) single nucleotide polymorphism (SNP) across different ethnic populations. Nonetheless, to date, information on the variations in IL-28 genotypes among different ethnic groups in Malaysia is still limited.
2.Influence of bariatric surgery on weight reduction and control of chronic disease among obese patients in Malaysia
Tan Kar Choon ; Chee Tao Chang ; Cheah Wee Kooi ; Rajkumar Vinayak ; Huan Keat Chan
The Medical Journal of Malaysia 2019;74(3):215-218
Introduction: This study was designed to determine the
influence of bariatric surgery on changes in the body mass
index (BMI), and the control of diabetes, hypertension and
dyslipidaemia among obese patients in Malaysia.
Materials And Methods: This was a retrospective cohort
study undertaken at a public tertiary care centre in the state
of Perak, Malaysia. Information of obese patients who
underwent bariatric surgery was obtained from their medical
records. The changes in the BMI, HbA1C, systolic and
diastolic blood pressure (SBP and DBP), and lipid levels
between three months before and after the surgery were
assessed.
Results: The patients (n=106) were mostly Malay (66.0%),
had at least one comorbidity (61.3%), and had a mean age of
40.38±11.75 years. Following surgery, the BMI of the patients
was found to reduce by 9.78±5.82kg/m2. For the patients
who had diabetes (n=24) and hypertension (n=47), their
mean HbA1C, SBP and DBP were also shown to reduce
significantly by 2.02±2.13%, 17.19±16.97mmHg, and
11.45±12.63mmHg, respectively. Meanwhile, the mean total
cholesterol, triglyceride and low-density lipoprotein levels of
those who had dyslipidaemia (n=21) were, respectively,
lowered by 0.91±1.18mmol/L, 0.69±1.11mmol/L and
0.47±0.52mmol/L.
Conclusion: The findings suggest that in addition to weight
reduction, bariatric surgery is helpful in improving the
diabetes, hypertension and dyslipidaemia control among
obese patients. However, a large-scale trial with a control
group is required to verify our findings
3. Comparison of Cox proportional hazards model, Cox proportional hazards with time-varying coefficients model, and lognormal accelerated failure time model: Application in time to event analysis of melioidosis patients
Kamaruddin MARDHIAH ; Kamaruddin MARDHIAH ; Nadiah WAN-ARFAH ; Nyi NAING ; Muhammad HASSAN ; Huan-Keat CHAN
Asian Pacific Journal of Tropical Medicine 2022;15(3):128-134
Objective: To compare the prognostic factors of mortality among melioidosis patients between lognormal accelerated failure time (AFT), Cox proportional hazards (PH), and Cox PH with timevarying coefficient (TVC) models. Methods: A retrospective study was conducted from 2014 to 2019 among 453 patients who were admitted to Hospital Sultanah Bahiyah, Kedah and Hospital Tuanku Fauziah, Perlis in Northern Malaysia due to confirmed-cultured melioidosis. The prognostic factors of mortality from melioidosis were obtained from AFT survival analysis, and Cox s models and the findings were compared by using the goodness of fit methods. The analyses were done by using Stata SE version 14.0. Results: A total of 242 patients (53.4%) survived. In this study, the median survival time of melioidosis patients was 30.0 days (95% CI 0.0-60.9). Six significant prognostic factors were identified in the Cox PH model and Cox PH-TVC model. In AFT survival analysis, a total of seven significant prognostic factors were identified. The results were found to be only a slight difference between the identified prognostic factors among the models. AFT survival showed better results compared to Cox's models, with the lowest Akaike information criteria and best fitted Cox-snell residuals. Conclusions: AFT survival analysis provides more reliable results and can be used as an alternative statistical analysis for determining the prognostic factors of mortality in melioidosis patients in certain situations.
4. Predictors of in-hospital mortality by logistic regression analysis among melioidosis patients in Northern Malaysia: A retrospective study
Kamaruddin MARDHIAH ; Kamaruddin MARDHIAH ; Nadiah WAN-ARFAH ; Nyi Nyi NAING ; Muhammad Radzi Abu HASSAN ; Huan-Keat CHAN
Asian Pacific Journal of Tropical Medicine 2021;14(8):356-363
Objective: To identify the predictors of mortality among in-hospital melioidosis patients. Methods: A total of 453 patients in Hospital Sultanah Bahiyah, Kedah, and Hospital Tuanku Fauziah, Perlis with culture-confirmed melioidosis were retrospectively included in the study. Advanced multiple logistic regression was used to obtain the final model of predictors of mortality from melioidosis. The analysis was performed using STATA/SE 14.0. Results: A total of 50.11% (227/453) of the patients died at the hospital, and a majority (86.75%, 393/453) of cases were bacteremic. The logistic regression estimated that the bacteremic type of melioidosis, low platelet count, abnormal white blood cell counts, and increased urea value were predictors of mortality. The results showed that bacteremic melioidosis increased the risk of death by 4.39 times (OR 4.39, 95% CI 1.83-10.55, P=0.001) compared to non-bacteremic melioidosis. Based on laboratory test, the adjusted ORs from the final model showed that all three blood investigations were included as the associated factors of mortality for the disease [high white blood cell (>10×109/L): OR 2.43, 95% CI 1.41-4.17, P<0.001; low white blood cell (<4×109/L): OR 3.82, 95% CI 1.09-13.34, P=0.036; low platelet (<100×109/L): OR 4.19, 95% CI 1.89-9.30, P<0.001; high urea (>7 800 μmol/L): OR 5.53, 95% CI 2.50-12.30, P<0.001; and low level of urea (<2 500 μmol/L): OR 3.52, 95% CI 1.71-7.23, P=0.001). Conclusions: Routine blood investigations during a hospital admission can early identify predictors of mortality in melioidosis patients.