Displaying publications 1 - 20 of 44 in total

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  1. Memon MA, Awaiz A, Yunus RM, Memon B, Khan S
    Am J Surg, 2018 11;216(5):1004-1015.
    PMID: 29958656 DOI: 10.1016/j.amjsurg.2018.06.012
    BACKGROUND: We conducted a meta-analysis of the randomized evidence to determine the relative merits of histopathological outcomes of laparoscopic assisted (LARR) versus open rectal resection (ORR) for rectal cancer.

    DATA SOURCES: A search of PubMed and other electronic databases comparing LARR and ORR between Jan 2000 and June 2016 was performed. Histopathological variables analyzed included; location of rectal tumors; complete and incomplete TME; positive and negative circumferential resection margins (+/-CRM); positive distal resected margins (+DRM); distance of tumor from DRM; number of lymph nodes harvested; resected specimen length; tumor size and perforated rectum.

    RESULTS: Fourteen RCTs totaling 3843 patients (LARR = 2096, ORR = 1747) were analyzed. Comparable effects were noted for all these histopathological variables except for the variable perforated rectum which favored ORR.

    CONCLUSIONS: LARR compares favorably to ORR for rectal cancer treatment. However, there is significantly higher risk of rectal perforation during LARR compared to ORR.

  2. Memon MA, Memon B, Yunus RM, Khan S
    Ann Surg, 2016 Feb;263(2):258-66.
    PMID: 26445468 DOI: 10.1097/SLA.0000000000001267
    The aim was to conduct a meta-analysis of randomized controlled trials (RCTs) comparing 2 methods of hiatal closure for large hiatal hernia and to evaluate their strengths and flaws.
  3. Yunus RM, Hairi NN
    Asia Pac J Public Health, 2020 01;32(1):57.
    PMID: 32019319 DOI: 10.1177/1010539520903541
  4. Choo WY, Hairi NN, Sooryanarayana R, Yunus RM, Hairi FM, Ismail N, et al.
    BMJ Open, 2016 05 25;6(5):e011057.
    PMID: 27225651 DOI: 10.1136/bmjopen-2016-011057
    INTRODUCTION: Despite being now recognised as a global health concern, there is still an inadequate amount of research into elder mistreatment, especially in low and middle-income regions. The purpose of this paper is to report on the design and methodology of a population-based cohort study on elder mistreatment among the older Malaysian population. The study aims at gathering data and evidence to estimate the prevalence and incidence of elder mistreatment, identify its individual, familial and social determinants, and quantify its health consequences.

    METHODS AND ANALYSIS: This is a community-based prospective cohort study using randomly selected households from the national census. A multistage sampling method was employed to obtain a total of 2496 older adults living in the rural Kuala Pilah district. The study is divided into two phases: cross-sectional study (baseline), and a longitudinal follow-up study at the third and fifth years. Elder mistreatment was measured using instrument derived from the previous literature and modified Conflict Tactic Scales. Outcomes of elder mistreatment include mortality, physical function, mental health, quality of life and health utilisation. Logistic regression models are used to examine the relationship between risk factors and abuse estimates. Cox proportional hazard regression will be used to estimate risk of mortality associated with abuse. Associated annual rate of hospitalisation and health visit frequency, and reporting of abuse, will be estimated using Poisson regression.

    ETHICS AND DISSEMINATION: The study has been approved by the Medical Ethics Committee of the University of Malaya Medical Center (MEC Ref 902.2) and the Malaysian National Medical Research Register (NMRR-12-1444-11726). Written consent was obtained from all respondents prior to baseline assessment and subsequent follow-up. Findings will be disseminated to local stakeholders via forums with community leaders, and health and social welfare departments, and published in appropriate scientific journals and presented at conferences.

  5. Tengku Mohd TAM, Yunus RM, Hairi F, Hairi NN, Choo WY
    BMJ Open, 2019 07 17;9(7):e026667.
    PMID: 31320348 DOI: 10.1136/bmjopen-2018-026667
    OBJECTIVES: This review aims to: (1) explore the social support measures in studies examining the association between social support and depression among community-dwelling older adults in Asia and (2) the evidence of association.

    DESIGN: A systematic review was conducted using electronic databases of CINAHL, PubMed, PsychINFO, Psychology and Behavioural Sciences Collection, SocINDEX and Web of Science for articles published until the 11th of January 2018.

    ELIGIBILITY CRITERIA: All observational studies investigating the association between social support and depression among community-dwelling older adults in Asia were included.

    PARTICIPANTS: Older adults aged 60 years and more who are living in the community.

    EXPOSURE MEASURES: Social support.

    OUTCOME MEASURES: Depression.

    RESULTS: We retrieved16 356 records and screened 66 full-text articles. Twenty-four observational studies were included in the review. They consisted of five cohort studies and 19 cross-sectional studies. Social support was found to be measured by multiple components, most commonly through a combination of structural and functional constructs. Perceived social support is more commonly measured compared with received social support. Good overall social support, having a spouse or partner, living with family, having a large social network, having more contact with family and friends, having emotional and instrumental support, good support from family and satisfaction with social support are associated with less depressive symptoms among community-dwelling older adults in Asia.

    CONCLUSIONS: There were 20 different social support measures and we applied a framework to allow for better comparability. Our findings emphasised the association between good social support and decrease depression among older adults. Compared with western populations, family support has a greater influence on depression among community-dwelling older adults in Asia. This indicates that the family institution needs to be incorporated into designed programmes and interventions when addressing depression in the Asian context. TRIAL : registration number : CRD42017074897.

  6. Welch V, Tanjong Ghogomu E, Dowling S, Choo WY, Yunus RM, Mohd TAMT, et al.
    Campbell Syst Rev, 2023 Sep;19(3):e1340.
    PMID: 37361556 DOI: 10.1002/cl2.1340
    This is the protocol for an evidence and gap map. The objectives are as follows: This EGM aims to map available evidence on the effects of in-person interventions to reduce social isolation and/or loneliness across all age groups in all settings.
  7. Memon MA, Osland E, Yunus RM, Alam K, Hoque Z, Khan S
    Dis Esophagus, 2024 Feb 29;37(3).
    PMID: 37935430 DOI: 10.1093/dote/doad063
    To compare 5-year gastroesophageal reflux outcomes following Laparoscopic Vertical Sleeve Gastrectomy (LVSG) and Laparoscopic Roux-en-Y gastric bypass (LRYGB) based on high quality randomized controlled trials (RCTs). We conducted a sub-analysis of our systematic review and meta-analysis of RCTs of primary LVSG and LRYGB procedures in adults for 5-year post-operative complications (PROSPERO CRD42018112054). Electronic databases were searched from January 2015 to July 2021 for publications meeting inclusion criteria. The Hartung-Knapp-Sidik-Jonkman random effects model was utilized to estimate weighted mean differences where meta-analysis was possible. Bias and certainty of evidence was assessed using the Cochrane Risk of Bias Tool 2 and GRADE. Four RCTs were included (LVSG n = 266, LRYGB n = 259). An increase in adverse GERD outcomes were observed at 5 years postoperatively in LVSG compared to LRYGB in all outcomes considered: Overall worsened GERD, including the development de novo GERD, occurred more commonly following LVSG compared to LRYGB (OR 5.34, 95% CI 1.67 to 17.05; p = 0.02; I2 = 0%; (Moderate level of certainty); Reoperations to treat severe GERD (OR 7.22, 95% CI 0.82 to 63.63; p = 0.06; I2 = 0%; High level of certainty) and non-surgical management for worsened GERD (OR 3.42, 95% CI 1.16 to 10.05; p = 0.04; I2 = 0%; Low level of certainty) was more common in LVSG patients. LVSG is associated with the development and worsening of GERD symptoms compared to LRYGB at 5 years postoperatively leading to either introduction/increased pharmacological requirement or further surgical treatment. Appropriate patient/surgical selection is critical to minimize these postoperative risks.
  8. Mohamed I, Othman F, Ibrahim AI, Alaa-Eldin ME, Yunus RM
    Environ Monit Assess, 2015 Jan;187(1):4182.
    PMID: 25433545 DOI: 10.1007/s10661-014-4182-y
    This case study uses several univariate and multivariate statistical techniques to evaluate and interpret a water quality data set obtained from the Klang River basin located within the state of Selangor and the Federal Territory of Kuala Lumpur, Malaysia. The river drains an area of 1,288 km(2), from the steep mountain rainforests of the main Central Range along Peninsular Malaysia to the river mouth in Port Klang, into the Straits of Malacca. Water quality was monitored at 20 stations, nine of which are situated along the main river and 11 along six tributaries. Data was collected from 1997 to 2007 for seven parameters used to evaluate the status of the water quality, namely dissolved oxygen, biochemical oxygen demand, chemical oxygen demand, suspended solids, ammoniacal nitrogen, pH, and temperature. The data were first investigated using descriptive statistical tools, followed by two practical multivariate analyses that reduced the data dimensions for better interpretation. The analyses employed were factor analysis and principal component analysis, which explain 60 and 81.6% of the total variation in the data, respectively. We found that the resulting latent variables from the factor analysis are interpretable and beneficial for describing the water quality in the Klang River. This study presents the usefulness of several statistical methods in evaluating and interpreting water quality data for the purpose of monitoring the effectiveness of water resource management. The results should provide more straightforward data interpretation as well as valuable insight for managers to conceive optimum action plans for controlling pollution in river water.
  9. Mohd Ali MA, Gimbun J, Lau KL, Cheng CK, Vo DN, Lam SS, et al.
    Environ Res, 2020 06;185:109452.
    PMID: 32259725 DOI: 10.1016/j.envres.2020.109452
    A synergistic effect of the activated limestone-based catalyst (LBC) and microwave irradiation on the transesterification of waste cooking oil (WCO) was screened using a two-level factorial design and response surface methodology. The catalyst was prepared using a wet-impregnation method and was characterised for its surface element, surface morphology, surface area and porosity. The reaction was performed in a purpose-built continuous microwave assisted reactor (CMAR), while the conversion and yield of biodiesel were measured using a gas chromatography. The results showed that the catalyst loading, methanol to oil molar ratio and the reaction time significantly affect the WCO conversion. The optimum conversion of oil to biodiesel up to 96.65% was achieved at catalyst loading of 5.47 wt%, methanol to oil molar ratio of 12.21:1 and the reaction time of 55.26 min. The application of CMAR in this work reduced the transesterification time by about 77% compared to the reaction time needed for a conventional reactor. The biodiesel produced in this work met the specification of American Society for Testing and Materials (ASTM D6751). Engine test results shows the biodiesel has a lower NOx and particulate matters emissions compared to petrodiesel.
  10. Shoaib LA, Safii SH, Naimie Z, Ahmad NA, Sukumaran P, Yunus RM
    Eur J Dent Educ, 2018 Feb;22(1):e26-e34.
    PMID: 27995730 DOI: 10.1111/eje.12252
    OBJECTIVES: This study was conducted in University of Malaya to evaluate student perceptions on the contribution and role of an effective clinical teacher based on the cognitive apprenticeship model in clinical practice.

    METHODS: Self-administered questionnaires were distributed to 233 undergraduate dental students involved with clinical teaching. This modified and validated questionnaire focusing on students' learning environment was used in order to gain relevant information related to dental clinical teaching. Six domains with different criteria applicable to clinical teaching in dentistry were selected consisting of modelling (four criteria), coaching (four criteria), scaffolding (four criteria), articulation (four criteria), reflection (two criteria) and general learning environment (six criteria). Data analyses were performed using IBM SPSS Statistics 20.

    RESULTS: Majority of the students expressed positive perceptions on their clinical learning experience towards the clinical teachers in the Faculty of Dentistry, University of Malaya, in all criteria of the domains. Few negative feedbacks concerning the general learning environment were reported.

    CONCLUSION: Further improvement in the delivery of clinical teaching preferably by using wide variety of teaching-learning activities can be taken into account through students' feedback on their learning experience.

  11. Mat Ruzlin AN, Chen XW, Yunus RM, Samsudin EZ, Selamat MI, Ismail Z
    Front Public Health, 2021;9:747953.
    PMID: 34692630 DOI: 10.3389/fpubh.2021.747953
    Background: The COVID-19 pandemic has had monumental effects on the mental health of populations worldwide. Previous research indicated that programs and interventions using social networks can play a positive role in promoting mental health. Nevertheless, current evidence is largely derived from high-income regions, reflecting an urgent need for more studies in low- and middle-income settings. Objectives: This paper aims to (a) describe the potential value of a hybrid health carnival in promoting mental health and increasing access to screening services; (b) assess the level of community engagement with the digital platform. Methods: A mental health carnival was conducted with the theme of "Mind Your Mental Health" (Cakna Kesihatan Mental) in conjunction with the World Mental Health Day in Malaysia. This was a hybrid carnival that combined elements of face-to-face interactions and virtual learning. Free online therapy sessions were offered to high-risk groups identified during the screening process. Social media metrics were utilized to report the levels of community engagement and participants completed pre-and post-assessments to measure the program's impact on their knowledge. Results: The carnival was attended by 515 participants (78.8% virtual participants). Social media metrics reported more than 5,585 reaches on Facebook for all the activities held throughout the event. Results from pre-and post-assessments showed significant improvement in the mean knowledge scores (p < 0.05). Conclusion: This digital approach will continue to evolve by releasing new features and tools as a new frontier for high-risk populations and all individuals seeking mental health support and treatment.
  12. Rashid NSA, Chen XW, Mohamad Marzuki MF, Takshe AA, Okasha A, Maarof F, et al.
    Int J Environ Res Public Health, 2022 Sep 20;19(19).
    PMID: 36231181 DOI: 10.3390/ijerph191911880
    The impact of dementia on caregivers is complex and multi-dimensional. In low- and middle-income settings, caregivers are often left without adequate support, despite their multiple needs. These include health information, caregiving skills, social and emotional support, and access to local resources-all of which can be partially fulfilled by technology. In recent years, mobile apps have emerged and proven useful for caregivers. We found a few existing apps suitable for Malaysian users in terms of affordability and cultural and linguistic compatibility. Our study aims to design a mobile app that suits dementia caregivers in Malaysia and consists of three phases. Phase I is content development that employs Focus Group Discussion (FGD) and Nominal Group Technique (NGT) involving field experts. Phase II comprises a mobile app (Demensia KITA) designed in collaboration with a software developer specializing in mobile health apps. Phase III entails testing the usability of the app using the Malay version of the mHealth App Usability Questionnaire (M-MAUQ). This study protocol elaborates on the rigorous steps of designing a mobile app and testing its usability, along with anticipated challenges. Our protocol will provide insight for future researchers, healthcare providers, and policymakers and pave the way for better use of digital technology in the field of aging and caregiving.
  13. Yunus RM, Hairi NN, Yuen C, Sooryanarayana R, Hairi F, Ismail N, et al.
    Int J Geriatr Psychiatry, 2019 01;34(1):60-66.
    PMID: 30230023 DOI: 10.1002/gps.4986
    BACKGROUND: Elder abuse and neglect (EAN) is a growing public health problem, and numerous adverse health effects of abuse in late life have been documented. Little is known, however, about the impact of elder abuse on sleep quality. This study examines the longitudinal relationship between EAN and sleep quality.

    METHODS: This was a 2-year prospective cohort study involving 1927 older adults in a rural Malaysian district, Kuala Pilah. A multi-stage cluster sampling strategy was employed. After 2 years, 1189 respondents were re-assessed. EAN was determined using the modified Conflict Tactic Scale, while sleep quality was measured using the Pittsburgh Sleep Quality Index (PSQI).

    RESULTS: The prevalence of elder abuse was 8.1% (95% CI:6.9,9.3). Longitudinal analysis using generalized estimating equations showed that elder abuse contributed to higher PSQI scores (B:0.49, 95% CI:0.17,0.58). Sub-analyses demonstrated that psychological abuse and neglect had significant longitudinal relationships with increase of PSQI scores, while other subtypes did not.

    CONCLUSION: Abuse in late life, particularly psychological abuse and neglect, result in greater PSQI scores. Even though this may imply decline in sleep quality, our findings were not considered clinically significant as they did not exceed the clinical cut-off score of five. Nevertheless, sleep quality is an important determinant of health and a predictor of mortality among older adults; thus, understanding its relationship with abuse is useful to health care providers and policy-makers in improving health services and upgrading preventive measures.
  14. Yunus RM, Johar H, Katiman D
    J Aging Soc Policy, 2023 Nov 02;35(6):743-755.
    PMID: 35290173 DOI: 10.1080/08959420.2022.2049575
    Like many other countries across the globe, Malaysia is rapidly graying. It is projected that older adults will comprise 10-15% of the country's total population in the next decade. Despite the surge in chronic diseases and a rise in dependency in daily living activities among Malaysian elders, formal support and long-term care services (LTC) have not been adequately developed. The existing tax-funded health care system - currently under huge financial strain - has no systematic or comprehensive LTC provision in place. This paper highlights the need for sustainable and equitable LTC services in Malaysia while drawing insight from existing LTC provision and financing arrangements in neighboring countries. It offers several recommendations to move forward in LTC planning using an approach that is unique to the Malaysian context.
  15. Yunus RM
    J Elder Abuse Negl, 2021 04 27;33(2):145-150.
    PMID: 33906576 DOI: 10.1080/08946566.2021.1919271
    This commentary highlights the issue of under-reporting of elder abuse and neglect (EAN) in the Malaysian context. It attempts to elucidate the findings of the 2018 National Health and Morbidity Survey (NHMS) related to the trend of reporting among EAN victims, and offer some recommendations.
  16. Yunus RM, Hairi NN, Choo WY, Hairi FM, Sooryanarayana R, Ahmad SN, et al.
    J Elder Abuse Negl, 2017;29(1):59-71.
    PMID: 27841737 DOI: 10.1080/08946566.2016.1260083
    Our study aims at describing mortality among reported elder abuse experiences in rural Malaysia. This is a population-based cohort study with a multistage cluster sampling method. Older adults in Kuala Pilah (n = 1,927) were interviewed from November 2013 to May 2014. Mortality was traced after 2 years using the National Registration Department database. Overall, 139 (7.2%) respondents died. Fifteen (9.6%) abuse victims died compared to 124 (7.0%) not abused. Mortality was highest with financial abuse (13%), followed by psychological abuse (10.8%). There was a dose-response relationship between mortality and clustering of abuse: 7%, 7.7%, and 14.0% for no abuse, one type, and two types or more, respectively. Among abuse victims, 40% of deaths had ill-defined causes, 33% were respiratory-related, and 27% had cardiovascular and metabolic origin. Results suggest a link between abuse and mortality. Death proportions varied according to abuse subtypes and gender.
  17. Wazid SW, Yunus RM, Mohd Hairi NN, Choo WY
    J Elder Abuse Negl, 2021 10 20;33(5):368-384.
    PMID: 34670476 DOI: 10.1080/08946566.2021.1990815
    Among the challenges in systematic inquiry into elder abuse and neglect (EAN) is the lack of standardized tool of measurement. Existing literature demonstrates diverse tools being used, with the Conflict Tactics Scale (CTS) and its versions being the most common. The Malaysian Elder Mistreatment Project (MAESTRO) utilized the Modified CTS developed and used by the National Study of Elder Abuse and Neglect in Ireland (NSEA-I). This article aimed to validate this Malay version of the modified CTS for use in the Malaysian context and by Malay-speaking populations across Southeast Asia while highlighting the various practical and methodological challenges encountered along the process. Data were collected from 1927 older respondents who lived in Kuala Pilah district. Preliminary data screening led to the dropping of 10 items due to 0 variance. Further four items were deleted during CFA due to low loading. The indicators of neglect factor were made into a composite factor due to high collinearity. The final scale had acceptable reliability and validity. This tool is likely to assist in assessing and detecting EAN more quickly and conveniently. It will also assist future researches of EAN in taking into account the issues that arise in the measurement of EAN.
  18. Yunus RM, Azme N, Chen XW, Badlishah-Sham SF, Miptah HN, Azraai AM
    J Glob Health, 2021 Jan 30;11:03024.
    PMID: 33692879 DOI: 10.7189/jogh.11.03024
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