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  1. Shafie AA, Chhabra IK, Wong JHY, Mohammed NS
    Eur J Health Econ, 2021 Jul;22(5):735-747.
    PMID: 33860379 DOI: 10.1007/s10198-021-01287-z
    PURPOSE: To develop a mapping algorithm for generating EQ-5D-3L utility scores from the PedsQL Generic Core Scales (PedsQL GCS) in patients with transfusion-dependent thalassemia (TDT).

    METHODS: The algorithm was developed using data from 345 TDT patients. Spearman's rank correlation was used to evaluate the conceptual overlap between the instruments. Model specifications were chosen using a stepwise regression. Both direct and response mapping methods were attempted. Six mapping estimation methods ordinary least squares (OLS), a log-transformed response using OLS, generalized linear model (GLM), two-part model (TPM), Tobit and multinomial logistic regression (MLOGIT) were tested to determine the root mean squared error (RMSE) and mean absolute error (MAE). Other criterion used were accuracy of the predicted utility score, proportions of absolute differences that was less than 0.03 and intraclass correlation coefficient. An in-sample, leave-one-out cross validation was conducted to test the generalizability of each model.

    RESULTS: The best performing model was specified with three out of the four PedsQL GCS scales-the physical, emotional and social functioning score. The best performing estimation method for direct mapping was a GLM with a RMSE of 0.1273 and MAE of 0.1016, while the best estimation method for response mapping was the MLOGIT with a RMSE of 0.1597 and MAE of 0.0826.

    CONCLUSION: The mapping algorithm developed using the GLM would facilitate the calculation of utility scores to inform economic evaluations for TDT patients when EQ-5D data is not available. However, caution should be exercised when using this algorithm in patients who have poor quality of life.

  2. Tan KF, Adam F, Hussin H, Mohd Mujar NM
    Epidemiol Health, 2021;43:e2021038.
    PMID: 34044478 DOI: 10.4178/epih.e2021038
    This study compared breast cancer survival and the prognostic factors across different age groups of women in Penang, Malaysia. Data on 2,166 women with breast cancer who had been diagnosed between 2010 and 2014 were extracted from the Penang Breast Cancer Registry and stratified into 3 age groups: young (< 40 years old), middle-aged (40-59 years old), and elderly (≥ 60 years). The overall and relative survival rates were calculated using the life table method, median survival time was calculated using the Kaplan-Meier method, and comparisons between groups were conducted using the log-rank test. Prognostic factors were analyzed using a Cox proportional hazards model. The 5-year overall and breast cancer-specific survival rates for women with breast cancer in Penang were 72.9% and 75.2%, with a mean survival time of 92.5 months and 95.1 months, respectively. The 5-year breast cancer-specific survival rates for young, middle-aged, and elderly women were 74.9%, 77.8%, and 71.4%, respectively, with a mean survival time of 95.7 months, 97.5 months, and 91.2 months. There was a significant difference in breast cancer survival between age groups, with elderly women showing the lowest survival rate, followed by young and middle-aged women. Disease stage was the most prominent prognostic factor for all age groups. Survival rates and prognostic factors differed according to age group. Treatment planning for breast cancer patients should be age-specific to promote better cancer care and survival.
  3. Albitar O, Harun SN, Ahmad SNA, Sheikh Ghadzi SM
    Pharmaceutics, 2021 Jul 22;13(8).
    PMID: 34452082 DOI: 10.3390/pharmaceutics13081121
    Clozapine remains the drug of choice for resistant schizophrenia. However, its dose-response relationship is still controversial. The current investigation aimed to develop a repeated time-to-positive symptoms improvement following the onset of clozapine treatment in Malaysian schizophrenia spectrum disorder patients. Data from patients' medical records in the Psychiatric Clinic, Penang General Hospital, were retrospectively analyzed. Several parametric survival models were evaluated using nonlinear mixed-effect modeling software (NONMEM 7.3.0). Kaplan-Meier-visual predictive check (KM-VPC) and sampling-importance resampling (SIR) methods were used to validate the final model. A total of 116 patients were included in the study, with a mean follow-up of 306 weeks. Weibull hazard function best fitted the data. The hazard of positive symptoms improvement decreased 4% for every one-year increase in age over the median of 41 years (adjusted hazard ratio (aHR), 0.96; 95% confidence intervals (95% CI), (0.93-0.98)). However, patients receiving a second atypical antipsychotic agent had four-folds higher hazard (aHR, 4.01; 95% CI, (1.97-7.17)). The hazard increased 2% (aHR, 1.02; 95% CI, (1.01-1.03)) for every 1 g increase in the clozapine six months cumulative dose over the median of 34 g. The developed model provides essential information on the hazard of positive symptoms improvement after the first clozapine dose administration, including modifiable predictors of high clinical importance.
  4. Kusmiati M, Hamid NAA, Sanip S, Emilia O
    Med Sci Educ, 2019 Dec;29(4):935-940.
    PMID: 34457569 DOI: 10.1007/s40670-019-00774-6
    Background: A preceptor has a key role in evaluating medical graduate's performance in the clinical setting. This study is conducted to develop an instrument for preceptor evaluation of medical graduates' performance in the clinical setting.

    Method: A mixed-method study design, sequential exploratory approach was chosen to develop the instrument. Initial semi-structured interviews were conducted with 4 preceptors at the teaching hospitals. Five main themes emerged from the interviews. The themes were developed into a 23-item questionnaire. Nineteen Head or Assistant Head of clinical departments were asked to review the relevance of the content. The questionnaire was later sent out to 34 preceptors and 35 paramedic staffs to participate in the construct validity study by conducting exploratory factor analysis (EFA). SPSS version 21 software was used to analyze the data and Varimax rotation method was performed to simplify and describe the data structure.

    Result: Review of the factor structures suggested that the most appropriate fit was 5 factors. Most of the questionnaire items were relevant to assess performance (4.65 + 0.15), except in item 4 of the clinical skill factor. The 23 items of the evaluation instruments showed that five factors were extracted which explained 73.9% of the variance between them. Construct validity was achieved after the instrument was run for an iteration of eight times, with Cronbach's alpha of 0.951.

    Discussion: The instrument has achieved the desired content and construct validity score. It can be used by other institutions to assess their medical graduates' performance in the clinical setting.

  5. Masood M, Younis LT, Masood Y, Bakri NN, Christian B
    J Clin Periodontol, 2019 02;46(2):170-180.
    PMID: 30657192 DOI: 10.1111/jcpe.13072
    OBJECTIVES: The aim of this study was to investigate the impact of periodontal disease on the domains of oral health-related quality of life (OHRQoL) of United Kingdom adults.

    METHODS: National representative data from the 2009 Adult Dental Health Survey, United Kingdom, were used in this study. Periodontal disease severity was measured using periodontal pocket depth and categorized into three groups: pocket depth up to 3.5, 3.5-5.5 and more than 5.5 mm. OHRQoL was measured using the Oral Health Impact Profile-14 (OHIP-14) scores. Bivariate and multivariable Zero-inflated Poisson regression analysis was used.

    RESULTS: A total of 6378 participants was analysed in this study. Periodontal pocketing was significantly associated with higher OHIP-14 scores. Participants with periodontal pocket depths >3.5 mm had a significantly higher prevalence for functional limitation, physical pain and social disability than participants with pocket depths of less than 3.5 mm. Participants with periodontal pocket depth(s) >5.5 mm had significantly higher OFOVO prevalence in all the domains of OHIP-14 except handicap domain than participants with pocket depth(s) <3.5 mm.

    PARTICIPANTS:

    CONCLUSION: This study showed that for a nationally representative sample of the United Kingdom population, periodontal disease was significantly associated with the domains of OHRQoL.

  6. Siddiqui S, Zainal H, Harun SN, Ghadzi SMS
    Clin Nutr ESPEN, 2020 10;39:165-172.
    PMID: 32859312 DOI: 10.1016/j.clnesp.2020.06.022
    BACKGROUND: Diabetes mellitus is a leading cause of preventable deaths and becomes a major public health concern in Malaysia. Multiple studies have reported the association between diet quality and glycemic parameters among known diabetic subjects. Its influence in individuals with borderline diabetes (i.e. pre-diabetes) or unknown diabetes is still unclear.

    OBJECTIVE: The objective of this study was to assess the association between diet quality evaluated by healthy eating index (HEI) with the glucose outcome in individuals with distinct diabetes progression stages, as well as to identify causal factors in relation to their diabetes status.

    METHOD: A cross-sectional study was conducted at clinical care setting in Universiti Sains Malaysia (USM) between October 2018-March 2019. Normoglycemic controls (n = 47), at-risk of pre-diabetes (n = 58), pre-diabetes (n = 24) as well as individuals with undiagnosed diabetes (n = 18) were queried about their habitual diet by using Food Frequency Questionnaire (FFQ). Correlation analyses were performed to examine the relationship between HEI score and 1) Fasting plasma glucose (FPG) 2) postprandial blood glucose (2-HPP) and glycosylated hemoglobin (HbA1c). Multinomial regression was performed to identify predictors associated with diabetes status of study participants.

    RESULT: Overall, diet quality of study participants was unsatisfactory with the mean score of 58.05 ± 9.07 that need improvement. Total HEI score was negatively correlated with the 2-HPP levels in pre-diabetic patients (r = - 0.45, p = 0.05). No significant association was revealed between glycemic parameters and total HEI score among other groups. Age, body mass index (BMI), triglycerides and female gender were positively correlated with the risk of pre-diabetes, at-risk of pre-diabetes and undiagnosed diabetes (p 

  7. Nur Aliah NA, Heo CC, Noor Shafini M, Mohd Hafizi M
    Trop Biomed, 2019 Sep 01;36(3):640-653.
    PMID: 33597486
    Accurate estimation of the minimum post-mortem interval (minPMI) is important in the investigation of forensic cases. Various thanatological methods are being used to estimate this interval. However, entomology approach is the most reliable method for this minPMI estimation especially when death has occurred over 72 hours and involved insects or other arthropods evidence at the death scene. The current methods of age estimation are daunting and destructive especially when dealing with pupal stage. The aims of this study were to characterize the morphological changes during intra-puparial period of Chrysomya megacephala (Fabricius) (Diptera: Calliphoridae) and their relation with minPMI estimation by using a high resolution micro-Computed Tomography (micro-CT). Gravid C. megacephala were collected from a rural area in Sungai Buloh, Selangor and cultured in the laboratory at 23.83±0.25°C with light: dark hour of 12:12 to initiate oviposition. The resulting larvae were reared until pupal stage. A pupa was collected at first (24 hours), second (48 hours), third (72 hours), and fourth quarter (96 hours) of the intra-puparial period. The pupal samples were placed directly into 70% ethanol for preservation. Micro-CT scanning was employed to acquire microstructural information following pupal sample staining for contrast enhancement. Eight age-informative internal morphological landmarks were mapped from the micro-CT scanning. The present study enhanced the potential value of micro-CT for the estimation of minPMI based on the internal morphological changes of C. megacephala pupae. This novel method is a promising tool for improving medico-legal investigations in forensic entomology.
  8. Emynur Shafekh, S., Mohd Adzim Khalili, R., Norhayati, A.H., Nor Farhanah, M.Y., Noor Husna, Z., Siti Nafizah, M.B., et al.
    MyJurnal
    Vigna sinensis also known as long-podded cowpea or Chinese long bean (Family:Fabaceae) is most widely grown in Southeast Asia. They are a good source of protein, vitamin A, vitamin C, iron, phosphorus, and potassium. The antioxidant potential of crude methanol extract, chloroform, and ethyl acetate soluble fractions of Vigna sinensiswas screened for in- vitro antioxidant activity using total phenolic content, ferric reducing power, 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) assay, ferric thiocyanate (FTC) and thiobarbituric acid (TBA) tests. It was found that ethyl acetate fraction have maximum amount of polyphenolics compounds (2.69 mg/g GAE in concentration 0.5 mg/mL); more effective than methanol and chloroform extract.This fraction also exhibited fairly good antioxidant activity with in both TBA (17.39% mg/g GAE) and FTC (12.65% mg/g GAE) methods.
  9. Norhayati MN, Nik Hazlina NH, Aniza AA
    BMC Public Health, 2016 08 18;16(1):818.
    PMID: 27538506 DOI: 10.1186/s12889-016-3524-9
    BACKGROUND: Given the growing interest in severe maternal morbidity (SMM), the need to assess its effects on quality of life is pressing. The objective of this study was to compare the quality of life scores between women with and without SMM at 1-month and 6-month postpartum in Kelantan, Malaysia.

    METHODS: A prospective double cohort study design was applied at two tertiary referral hospitals over a 6-month period. The study population included all postpartum women who delivered in 2014. Postpartum women with and without SMM were selected as the exposed and non-exposed groups, respectively. For each exposed case identified, a non-exposed case with a similar mode of delivery was selected. The main outcome measures used were scores from the Short Form-12 Health Survey (SF-12).

    RESULTS: The study measured 145 exposed and 187 non-exposed women. The group-time interaction of the repeated measure analysis of variance (RM ANOVA) showed no significant difference in the mean overall SF-12 physical component summary score changes (P = 0.534) between women with and without SMM. Similarly, the group-time interaction of the RM ANOVA showed no significant difference in the mean overall SF-12 mental component summary score changes (P = 0.674) between women with and without SMM. However, women with SMM scored significantly lower on a general health perceptions subscale at 1-month (P = 0.031), role limitations due to physical health subscale at 6-month (P = 0.019), vitality subscale at 1-month (P = 0.007) and 6-month (P = 0.008), and role limitations due to emotional problems subscales at 6-month (P = 0.008).

    CONCLUSIONS: Women with severe maternal morbidity demonstrated comparable quality of life during the 6-month postpartum period compared to women without severe maternal morbidity.

  10. Azmi NA, Ahem A, Mustapha M, Bastion MC
    BMJ Case Rep, 2016 Sep 28;2016.
    PMID: 27681348 DOI: 10.1136/bcr-2016-215987
    We report a case of enucleation for painful blind eye secondary to recurrent bleeding from choroidal neovascularisation in an eye that was irradiated following presumed metastatic breast carcinoma to the choroid. A 58-year-old woman with a history of treated breast malignancy presented with haemophthalmus and intractable glaucoma in the right eye. One year previously she had presented with right vitreous haemorrhage with subretinal mass that had been irradiated given her history of breast carcinoma. Following irradiation, vitrectomy was performed to clear the blood. Intraoperative and postoperative angiography findings suggested a diagnosis of breakthrough bleeding secondary to polypoidal choroidal vasculopathy. At this presentation, however, the intraocular bleeding was recurrent resulting in elevated intraocular pressure and pain. Despite repeat surgery and medical therapy, the eye had to be enucleated. Histopathology showed choroidal neovascularisation.
  11. Merovci F, Khaleel MA, Ibrahim NA, Shitan M
    Springerplus, 2016;5(1):697.
    PMID: 27347471 DOI: 10.1186/s40064-016-2271-9
    We develop a new continuous distribution called the beta-Burr type X distribution that extends the Burr type X distribution. The properties provide a comprehensive mathematical treatment of this distribution. Further more, various structural properties of the new distribution are derived, that includes moment generating function and the rth moment thus generalizing some results in the literature. We also obtain expressions for the density, moment generating function and rth moment of the order statistics. We consider the maximum likelihood estimation to estimate the parameters. Additionally, the asymptotic confidence intervals for the parameters are derived from the Fisher information matrix. Finally, simulation study is carried at under varying sample size to assess the performance of this model. Illustration the real dataset indicates that this new distribution can serve as a good alternative model to model positive real data in many areas.
  12. Norhayati MN, Nik Hazlina NH, Aniza AA, Asrenee AR
    Res Nurs Health, 2016 Dec;39(6):415-425.
    PMID: 27367484 DOI: 10.1002/nur.21741
    The adverse consequences to mothers of postpartum depression are well-documented, and risk factors are of interest. There is limited evidence on postpartum depression among women with severe maternal morbidity, defined as potentially life-threatening conditions during pregnancy, childbirth, or soon after termination of pregnancy. We compared postpartum depressive symptoms of postpartum women aged 18 and older who delivered in two tertiary referral hospitals in 2014 in Kelantan, Malaysia, and had (n = 145) or had not (n = 187) suffered severe maternal morbidity. A prospective double cohort study design was applied. Postpartum depressive symptoms were assessed at 1 and 6 months postpartum using the Malay version of the Edinburgh Postnatal Depression Scale. There was no significant difference in the mean Edinburgh Postnatal Depression Scale score changes (p = .803) between the two groups of women, after adjusting for age, social support, physical health, occupation, and education. Factors other than severe medical complications should be pursued as predictors of postpartum depressive symptomatology. © 2016 Wiley Periodicals, Inc.
  13. Al-Fakih EA, Abu Osman NA, Mahmad Adikan FR
    Sensors (Basel), 2016 Jul 20;16(7).
    PMID: 27447646 DOI: 10.3390/s16071119
    The distribution of interface stresses between the residual limb and prosthetic socket of a transtibial amputee has been considered as a direct indicator of the socket quality fit and comfort. Therefore, researchers have been very interested in quantifying these interface stresses in order to evaluate the extent of any potential damage caused by the socket to the residual limb tissues. During the past 50 years a variety of measurement techniques have been employed in an effort to identify sites of excessive stresses which may lead to skin breakdown, compare stress distributions in various socket designs, and evaluate interface cushioning and suspension systems, among others. The outcomes of such measurement techniques have contributed to improving the design and fitting of transtibial sockets. This article aims to review the operating principles, advantages, and disadvantages of conventional and emerging techniques used for interface stress measurements inside transtibial sockets. It also reviews and discusses the evolution of different socket concepts and interface stress investigations conducted in the past five decades, providing valuable insights into the latest trends in socket designs and the crucial considerations for effective stress measurement tools that lead to a functional prosthetic socket.
  14. Nurrul Assyikeen Md. Jaffary, Wo, Yii Mei, Abdul Kadir Ishak, Noor Fadzilah Yusof, Kamarozaman Ishak, Maziah Mahmud, et al.
    MyJurnal
    On March 11, 2011, a serious accident occurred in Daiichi nuclear reactor plant, Fukushima,
    Japan which caused radioactive materials been released into the atmosphere in the form of
    aerosols and dust particles. Sea water around the plant was also found contaminated with high
    radioactivity readings. These radioactive materials could be transported by the winds and ocean
    current across international borders and cannot be controlled by human. Thus, a continuous
    monitoring activity of radionuclide content in the air and sea water needs to be conducted by the
    authorities. In addition to radioactivity monitoring, Malaysia should also control the entry of
    contaminated food in order to prevent radionuclide ingestion by human. The radionuclide 131I,
    134Cs and 137Cs were used as a measure of pollution levels and counted with gamma spectrometry
    using standard analysis method suggested by AOAC International. In this paper, details description
    of the role of Radiochemical and Environment Group, Nuclear Malaysia who’s responsible in
    analyzing the radioactivity in the food samples due to Fukushima Daiichi, Japan accident was
    included. The radioactivity limit adopted and analysis results from this monitoring were discussed
  15. Tuan Zainazor, T. C., Afsah-Hejri, L., Noor Hidayah, M. S., Noor Eliza, M. R., Naziehah, M. D., Tang, J. Y. H., et al.
    MyJurnal
    Presence of Norovirus in food can cause viral gasteroenteritis. Recently, lots of reports relating to Norovirus in food have been published. Special attention must be paid to the raw foods as they are not subjected to further heat treatment. In this study, pegaga, kesum, tauge and ulam raja (popular salad vegetables in Malaysia) were investigated for Norovirus. A total of 32 samples from each type of salad vegetables were purchased from local market and analyzed using One-step RT-PCR (Reverse Transcriptase-Polymerase Chain Reaction) for both genogroups namely Norovirus Genogroup I and Genogroup II. Results showed that tauge had the highest contamination with Norovirus Genogroup I (15.6%) comparing to pegaga (9.4%), kesum (12.5%)
    and ulam raja (0%). Samples were free from Norovirus Genogroup II. The study showed that raw vegetables are high-risk foods and can be contaminated with Norovirus.
  16. Wong M, Woolford L, Hasan NH, Hemmatzadeh F
    Viral Immunol, 2017 05;30(4):258-263.
    PMID: 28426340 DOI: 10.1089/vim.2016.0041
    In this study, canine adenoviruses (CAdVs) from two acute fatal cases of infectious canine hepatitis (ICH) were analyzed using molecular detection and sequencing of the pVIII, E3, and fiber protein genes. Pathological findings in affected dogs were typical for CAdV-1 associated disease, characterized by severe centrilobular to panlobular necrohemorrhagic hepatitis and the development of disseminated intravascular coagulation in the terminal stages of disease. Comparison of partial genome sequences revealed that although these newly detected viruses mainly had CAdV-1 genome characteristics, their pVIII gene was more similar to that of CAdV-2. This likely suggests that a recombination has occurred between CAdV-1 and CAdV-2, which possibly explains the cause of vaccine failure or increased virulence of the virus in the observed ICH cases.
  17. Adlan AS, Chooi KY, Mat Adenan NA
    J Obstet Gynaecol Res, 2017 Apr;43(4):662-668.
    PMID: 28418209 DOI: 10.1111/jog.13269
    AIM: To evaluate the efficacy of acupressure at the Neiguan point (Pericardium [P]6) as adjuvant treatment during inpatient management of severe nausea and vomiting in pregnancy.

    METHODS: Low risk, spontaneously conceived singleton pregnancies were randomly assigned to a treatment group, who received an acupressure band placed at the Neiguan point (P6) or a placebo group who received an otherwise identical non-stimulating wristband. Participants wore the band for 12 h daily for the first three days of admission. The primary outcome measure was the severity of symptoms of nausea, vomiting and retching, recorded according to Pregnancy-Unique Quantification of Emesis and Nausea score.

    RESULTS: There was a statistically significant improvement in Pregnancy-Unique Quantification of Emesis and Nausea scores from day 1 until day 3 of admission in the treatment group compared with the placebo. Patients who received Neiguan point acupressure also showed a significant improvement in their ketonuria scores. The treatment group required a shorter hospital stay compared with the placebo. The only reported side effect of the acupressure band was redness on the wrist.

    CONCLUSIONS: The use of the acupressure band at the Neiguan point (P6) for 12 h daily for three days for inpatients with hyperemesis gravidarum significantly reduced the symptoms of nausea, vomiting and retching and ketonuria and led to a reduction in hospital stay. We recommend the use of the acupressure band at the Neiguan point (P6) as an adjunct/supplementary therapy to co-exist with the standard care of management for hyperemesis gravidarum, particularly in low-risk pregnant women.

  18. Rahman MT, Haque N, Abu Kasim NH, De Ley M
    PMID: 28417197 DOI: 10.1007/112_2017_1
    Toxic heavy metals, toxic organic compounds, reactive oxygen species (ROS), infections, and temperature are well-known metallothionein (MT) inducers in human blood. The current review aims to summarize synthesis, function, and fate of human blood MT in response to the known MT inducers. Part of the MTs that are synthesized in different organs such as the liver, kidney, and spleen is transported and stored in different blood cells and in plasma. Cells of the circulatory system also synthesize MT. From the circulation, MT returns to the kidney where the metal-bound MTs are degraded to release the metal ion that in turn induces MT expression therein. The blood MTs play important roles in metal detoxification, transportation, and storage. By neutralizing ROS, MTs protect blood cells from oxidative stress-induced cytotoxicity and genotoxicity. Arguably, MTs are also involved in immune suppression. Given the permeating distribution of blood MT throughout the body as well as its diverse role in the protection against harmful environmental factors and in metal homeostasis, MT could be better recognized as a major public health protein.
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