Displaying publications 41 - 60 of 402 in total

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  1. Zaki R, Bulgiba A, Nordin N, Azina Ismail N
    Iran J Basic Med Sci, 2013 Jun;16(6):803-7.
    PMID: 23997908
    Reliability measures precision or the extent to which test results can be replicated. This is the first ever systematic review to identify statistical methods used to measure reliability of equipment measuring continuous variables. This studyalso aims to highlight the inappropriate statistical method used in the reliability analysis and its implication in the medical practice.
    Matched MeSH terms: Longitudinal Studies
  2. Atif M, Sulaiman SA, Shafie AA, Asif M, Sarfraz MK, Low HC, et al.
    PMID: 24528499 DOI: 10.1186/1477-7525-12-19
    At present, much of the attention within tuberculosis (TB) management is spent on microbiological cure, and its impact on health-related quality of life (HRQoL) is either undervalued or seldom considered. The aim of this study was to evaluate the impact of TB treatment on HRQoL of new smear positive pulmonary tuberculosis (PTB) patients. Moreover, we also aimed to determine whether the selected socio-demographic and clinical variables were predictive of variability in the HRQoL scores over time.
    Matched MeSH terms: Longitudinal Studies
  3. Gillani SW, Sari YO, Sulaiman SA, Baig MR
    Curr Diabetes Rev, 2014;10(5):311-26.
    PMID: 25316148 DOI: 10.2174/1573399810666141015095004
    Our study objective was to evaluate glucose tolerance and effecting factors among diabetes patients' with home care program (PHCP) in Malaysian community. A 24-week longitudinal quasi-experimental -single blind - pre/post-test study design was used to assess the effectiveness of a diabetes education program to enhance self-care practices. An attrition rate of 25% implied longitudinal design of the study in the calculation of sample size. Hence the sample size of the study was 106 subjects (53 cases and 53 focus group). The level of significance was set at 0.05. Ethical clearance had been made prior to conducting this study. Of the 109 subjects who met the study-entry criteria, 3 subjects declined to participate due to lack of time and interest. No significant parameters were revealed in the demographic and clinical characteristics of participants who completed the study. Focus group showed significant reduction in HbA1c value with mean 1.1% as compared to cases with a mean 0.06%. Similarly, hypothesis on self-care management suggest significantly improved practices among focus group [M=2.94, SD=2.25] for case group M=0.47, SD=1.36; t[127.64]=-8.23, p≤0.001] with moderate effect size [eta squared=0.06]. Total physical activity was defined as the combination of non-leisure and leisure activities. There was a statistically significant difference for increase in total physical levels between the focus [M=14.01, SD=6.41] and case groups [13.21, SD=5.22; t[148.04]=-3.15, p=0.002] with no difference in the non-leisure activity [p=0.43]. As for the case group, there was no significant difference in SMBG practices from baseline [M=0.70, SD=1.35] to follow-up [M=0.47, SD=1.36, t[72]=0.97, P=0.34] and no relationship was found between the number of blood glucose tests done with demographic or clinical variables. This study offered improved self-care practices and physical activity after PHCP but with problematic dietary care. This might be due to social and cultural habits among Malaysian population.
    Matched MeSH terms: Longitudinal Studies
  4. Palafox B, Seguin ML, McKee M, Dans AL, Yusoff K, Candari CJ, et al.
    BMJ Open, 2018 07 30;8(7):e024000.
    PMID: 30061449 DOI: 10.1136/bmjopen-2018-024000
    INTRODUCTION: Hypertension is a leading contributor to the global burden of disease. While safe and effective treatment exists, blood pressure control is poor in many countries, often reflecting barriers at the levels of health systems and services as well as at the broader level of patients' sociocultural contexts. This study examines how these interact to facilitate or hinder hypertension control, taking into account characteristics of service provision components and social contexts.

    METHODS AND ANALYSIS: The study, set in Malaysia and the Philippines, builds on two systematic reviews of barriers to effective hypertension management. People with hypertension (pre-existing and newly diagnosed) will be identified in poor households in 24-30 communities per country. Quantitative and qualitative methods will be used to examine their experiences of and pathways into seeking and obtaining care. These include two waves of household surveys of 20-25 participants per community 12-18 months apart, microcosting exercises to assess the cost of illness (including costs due to health seeking activities and inability to work (5 per community)), preliminary and follow-up in-depth interviews and digital diaries with hypertensive adults over the course of a year (40 per country, employing an innovative mobile phone technology), focus group discussions with study participants and structured assessments of health facilities (including formal and informal providers).

    ETHICS AND DISSEMINATION: Ethical approval has been granted by the Observational Research Ethics Committee at the London School of Hygiene and Tropical Medicine and the Research Ethics Boards at the Universiti Putra Malaysia and the University of the Philippines Manila. The project team will disseminate findings and engage with a wide range of stakeholders to promote uptake and impact. Alongside publications in high-impact journals, dissemination activities include a comprehensive stakeholder analysis, engagement with traditional and social media and 'digital stories' coproduced with research participants.

    Matched MeSH terms: Longitudinal Studies
  5. Manuel AM, Kuljit S, Gopalakrishnan G, Suresh KG, Balraj P
    Trop Biomed, 2012 Sep;29(3):360-5.
    PMID: 23018498 MyJurnal
    The purpose of this study is to determine the relevance of the hygiene hypothesis; that is to determine if worm infestation has a protective role against the development of allergic rhinitis. A prospective case controlled study was conducted. Specific IgG levels to Toxocara were studied in 85 patients confirmed to have allergic rhinitis and were compared to levels in another 85 controls, with no form of allergy. The IgG assay was done using ELISA technique. There was a higher incidence of positive specific IgG to Toxocara in the controls as compared to allergic patients. The values were statistically significant [Chi square test (p=0.002)]. This negative association between worm infestation and allergic rhinitis suggests that a previous worm infestation could protect against the development of allergic rhinitis.
    Matched MeSH terms: Longitudinal Studies
  6. Forde BM, Roberts LW, Phan MD, Peters KM, Fleming BA, Russell CW, et al.
    Nat Commun, 2019 08 13;10(1):3643.
    PMID: 31409795 DOI: 10.1038/s41467-019-11571-5
    Recurrent urinary tract infections (rUTIs) are extremely common, with ~ 25% of all women experiencing a recurrence within 1 year of their original infection. Escherichia coli ST131 is a globally dominant multidrug resistant clone associated with high rates of rUTI. Here, we show the dynamics of an ST131 population over a 5-year period from one elderly woman with rUTI since the 1970s. Using whole genome sequencing, we identify an indigenous clonal lineage (P1A) linked to rUTI and persistence in the fecal flora, providing compelling evidence of an intestinal reservoir of rUTI. We also show that the P1A lineage possesses substantial plasmid diversity, resulting in the coexistence of antibiotic resistant and sensitive intestinal isolates despite frequent treatment. Our longitudinal study provides a unique comprehensive genomic analysis of a clonal lineage within a single individual and suggests a population-wide resistance mechanism enabling rapid adaptation to fluctuating antibiotic exposure.
    Matched MeSH terms: Longitudinal Studies
  7. Laghari M, Talpur BA, Syed Sulaiman SA, Khan AH, Bhatti Z
    Int J Mycobacteriol, 2020 8 31;9(3):281-288.
    PMID: 32862161 DOI: 10.4103/ijmy.ijmy_75_20
    Background: The frequency, severity, and the nature of anti-tuberculosis (TB)-induced adverse drug reactions (ADRs) have always been the matter of concern. The present study was, therefore, aimed to study the incidence, risk factors, and effect of anti-tuberculosis treatment (ATT) among TB children.

    Methods: A prospective longitudinal study was conducted in the Sindh province, Pakistan. A total of 508 TB children in multicenter hospitals under ATT were assessed for ADRs. Naranjo Causality Assessment and Hartwig's Severity Assessment Scale were used.

    Results: A total of 105 ADRs were reported in 67 (13.2%) of 508 patients. Gastrointestinal disorders were the most frequently observed ADRs (65.7%), followed by arthralgia (24.8%). Around 65 (61.9%) of ADRs were identified as probable and 78 (74.3%) as mild severe ADRs during the study. A total of four cases of mild hepatotoxicity were observed among children. On multivariate analysis, the independent variables which had statistically significant positive association with ADRs were female (OR; 2.66, P = 0.004), retreatment (OR; 22.32, P = ≤ 0.001), and absence of BCG scar (OR; 17.84, P = 0.001).

    Conclusions: The finding of the current study suggests that close monitoring of females, patients with previous TB treatment, and those without BCG is warranted at the study site.

    Matched MeSH terms: Longitudinal Studies
  8. Kong YC, Sakti VV, Sullivan R, Bhoo-Pathy N
    Ecancermedicalscience, 2020;14:1134.
    PMID: 33281926 DOI: 10.3332/ecancer.2020.1134
    The ongoing COVID-19 pandemic may worsen the existing financial vulnerabilities of cancer survivors who may be experiencing a double financial hit, both from cancer-induced financial toxicity as well as economic strains arising from loss of income and prolonged unemployment following the pandemic. The impact of the pandemic is likely to be more pronounced on cancer survivors living in resource-limited settings, such as in Southeast Asia. As health care systems in the region try to streamline resources and accommodate the influx of patients from COVID-19, many in the cancer community have experienced severe disruptions in their care. The delays and disruption of timely access to cancer care could lead to patients presenting with worsened conditions and at more advanced cancer stages in which treatment options tended to be costlier. Similar to countries around the world, the various forms of movement restrictions that were enforced have aggravated the rates of unemployment, loss of wages and the limited access to support from family or friends around Southeast Asia. The economic impact of COVID-19 hits even harder on the large proportion of the population in the region that works in the informal sector, who are often one paycheque or one episode of illness away from financial catastrophe. More worryingly, the lack of a robust social security system in many Southeast Asian countries, especially in terms of income protection, could ultimately force many cancer survivors to choose between paying for their treatments, or to forego treatments, and feed their families. Early identification of cancer patients experiencing financial toxicity following the pandemic will enable timely and appropriate interventions to be undertaken by various stakeholders, potentially averting a cascade of other economic fallouts that may last for years after cancer treatment.
    Matched MeSH terms: Longitudinal Studies
  9. Sarkar T, Alam MM, Parvin N, Fardous Z, Chowdhury AZ, Hossain S, et al.
    Toxicol Rep, 2016;3:346-350.
    PMID: 28959555 DOI: 10.1016/j.toxrep.2016.03.003
    This study is aimed to assess the heavy metals contamination and health risk in Shrimp (Macrobrachium rosenbergii and Penaeus monodon) collected from Khulna-Satkhira region in Bangladesh. The results showed that the Pb concentrations (0.52-1.16 mg/kg) in all shrimp samples of farms were higher than the recommended limit. The Cd levels (0.05-0.13 mg/kg) in all samples and Cr levels in all farms except tissue content at Satkhira farm were higher than the permissible limits. The individual concentration of Pb, Cd, and Cr between shrimp tissue and shell in all rivers and farms were not statistically significant (P > 0.05). Target hazard quotient (THQ) and hazard index (HI) were estimated to assess the non-carcinogenic health risks. Shrimp samples from all locations under the current study were found to be safe for consumption, the possibility of health risk associated with non-carcinogenic effect is very low for continuous consumption for 30 years.
    Matched MeSH terms: Longitudinal Studies
  10. Bonn GB
    Front Psychol, 2013;4:920.
    PMID: 24367349 DOI: 10.3389/fpsyg.2013.00920
    This paper examines the concept of free will, or independent action, in light of recent research in psychology and neuroscience. Reviewing findings in memory, prospection, and mental simulation, as well as the neurological mechanisms underlying behavioral control, planning, and integration, it is suggested in accord with previous arguments (e.g., Wegner, 2003; Harris, 2012) that a folk conception of free will as entirely conscious control over behavior should be rejected. However, it is argued that, when taken together, these findings can also support an alternative conception of free will. The constructive nature of memory and an integrative "default network" provide the means for novel and creative combinations of information, such as the imagining of counterfactual scenarios and alternative courses of action. Considering recent findings of extensive functional connections between these systems and those that subsume motor control and goal maintenance, it is argued that individuals have the capability of producing novel ideas and translating them into actionable goals. Although most of these processes take place beneath conscious awareness, it is argued that they are unique to the individual and thus, can be considered a form of independent control over behavior, or free will.
    Matched MeSH terms: Longitudinal Studies
  11. 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.

    Matched MeSH terms: Longitudinal Studies
  12. Lee J, Tan LL, Chai SP
    Nanoscale, 2021 Apr 21;13(15):7011-7033.
    PMID: 33889914 DOI: 10.1039/d1nr00783a
    As an indispensable energy source, ammonia plays an essential role in agriculture and various industries. Given that the current ammonia production is still dominated by the energy-intensive and high carbon footprint Haber-Bosch process, photocatalytic nitrogen fixation represents a low-energy consuming and sustainable approach to generate ammonia. Heterostructured photocatalysts are hybrid materials composed of semiconductor materials containing interfaces that make full use of the unique superiorities of the constituents and synergistic effects between them. These promising photocatalysts have superior performances and substantial potential in photocatalytic reduction of nitrogen. In this review, a wide spectrum of recently developed heterostructured photocatalysts for nitrogen fixation to ammonia are evaluated. The fundamentals of solar-to-ammonia conversion, basic principles of various heterojunction photocatalysts and modification strategies are systematically reviewed. Finally, a brief summary and perspectives on the ongoing challenges and directions for future development of nitrogen photofixation catalysts are also provided.
    Matched MeSH terms: Longitudinal Studies
  13. Liber AC, Ross H, Omar M, Chaloupka FJ
    Tob Control, 2015 Jul;24 Suppl 3:iii83-iii87.
    PMID: 25808666 DOI: 10.1136/tobaccocontrol-2014-052028
    Study the effects of the 2011 Malaysian minimum price law (MPL) on prices of licit and illicit cigarette brands. Identify barriers to the MPL achieving positive public health effects.
    Matched MeSH terms: Longitudinal Studies
  14. Ford K, Jampaklay A, Chamratrithirong A
    Int J Public Health, 2019 Nov;64(8):1193-1201.
    PMID: 31489461 DOI: 10.1007/s00038-019-01297-y
    OBJECTIVES: A long-term civil conflict has been occurring in the southernmost provinces of Thailand, and migration to Malaysia has been accelerated by this conflict. The objective of this work was to examine the influence of perceived effects of the unrest, migration of a household member, and children left behind on the reporting of psychiatric symptoms of working age adults.

    METHODS: A first round of data collection was conducted in 2014 including interviews with a probability sample of 1102 households and individual interviews with 2058 males and females aged 18-59. In 2016, a second round of data collection was conducted. A fixed effects model was used in the analysis.

    RESULTS: The perceived effect of the unrest on the household was associated with an increased reporting of psychiatric symptoms. Furthermore, the migration of a household member for work and the presence of children left behind were related to an increased reporting of psychiatric symptoms among adults, especially among females.

    CONCLUSIONS: The unrest and its associated migration was related to an increased reporting of psychiatric symptoms among working age adults in the study population.

    Matched MeSH terms: Longitudinal Studies
  15. Jampaklay A, Ford K, Chamratrithirong A
    Demography, 2020 04;57(2):727-745.
    PMID: 32072505 DOI: 10.1007/s13524-020-00856-w
    Although migration of Muslims from the southernmost provinces of Thailand to Malaysia has a long history, research suggests that the intensity of this migration has increased in the past 10 years along with increased unrest in the provinces. This study examines how migration in the three southernmost provinces is affected by the ongoing unrest. Data are drawn from household probability surveys conducted in 2014 and 2016. An individual sample of 3,467 persons who were household residents at the 2014 survey was followed to see who remained in the household of origin or moved out two years later (2016 survey). Data on violent events from the Deep South Watch, an independent organization, were used to measure exposure to violence. Results from a multilevel analysis show that net of other characteristics at the individual, household, and village levels, individuals who live in a village in which a violent event occurred in the previous year are more likely to move out than those who live in a village with no violent event in the previous year. Findings suggest that in addition to the economic reasons that have long motivated migration from this area, violent events accelerate this migration.
    Matched MeSH terms: Longitudinal Studies
  16. McCallum GB, Singleton RJ, Redding GJ, Grimwood K, Byrnes CA, Valery PC, et al.
    Pediatr Pulmonol, 2020 04;55(4):975-985.
    PMID: 32096916 DOI: 10.1002/ppul.24696
    OBJECTIVE: The sole prospective longitudinal study of children with either chronic suppurative lung disease (CSLD) or bronchiectasis published in the current era was limited to a single center. We sought to extend this study by evaluating the longer-term clinical and lung function outcomes and their associated risk factors in Indigenous children of adolescents from Australia, Alaska, and New Zealand who participated in our previous CSLD or bronchiectasis studies during 2004-2010.

    METHODS: Between 2015 and 2018, we evaluated 131 out of 180 (72.8%) children of adolescents from the original studies at a single follow-up visit. We administered standardized questionnaires, reviewed medical records, undertook clinical examinations, performed spirometry, and scored available chest computed tomography scans.

    RESULTS: Participants were seen at a mean age of 12.3 years (standard deviation: 2.6) and a median of 9.0 years (range: 5.0-13.0) after their original recruitment. With increasing age, rates of acute lower respiratory infections (ALRI) declined, while lung function was mostly within population norms (median forced expiry volume in one-second = 90% predicted, interquartile range [IQR]: 81-105; forced vital capacity [FVC] = 98% predicted, IQR: 85-114). However, 43 out of 111 (38.7%) reported chronic cough episodes. Their overall global rating judged by symptoms, including ALRI frequency, examination findings, and spirometry was well (20.3%), stable (43.9%), or improved (35.8%). Multivariable regression identified household tobacco exposure and age at first ALRI-episode as independent risk factors associated with lower FVC% predicted values.

    CONCLUSION: Under our clinical care, the respiratory outcomes in late childhood or early adolescence are encouraging for these patient populations at high-risk of premature mortality. Prospective studies to further inform management throughout the life course into adulthood are now needed.

    Matched MeSH terms: Longitudinal Studies
  17. Arokiaraj P, Yeet Yeang H, Fong Cheong K, Hamzah S, Jones H, Coomber S, et al.
    Plant Cell Rep, 1998 May;17(8):621-625.
    PMID: 30736515 DOI: 10.1007/s002990050454
    Hevea brasiliensis anther calli were genetically transformed using Agrobacterium GV2260 (p35SGUSINT) that harboured the β-glucuronidase (gus) and neomycin phosphotransferase (nptII) genes. β-Glucuronidase protein (GUS) was expressed in the leaves of kanamycin-resistant plants that were regnerated, and the presence of the gene was confirmed by Southern analysis. GUS was also observed to be expressed in the latex and more importantly in the serum fraction. Transverse sections of the leaf petiole from a transformed plant revealed GUS expression to be especially enhanced in the phloem and laticifers. GUS expression was subsequently detected in every one of 194 plants representing three successive vegetative cycles propagated from the original transformant. Transgenic Hevea could thus facilitate the continual production of foreign proteins expressed in the latex.
    Matched MeSH terms: Longitudinal Studies
  18. Hussein A, Han Shu T, Chong MF, Cheah CF
    Cureus, 2020 Sep 27;12(9):e10680.
    PMID: 33133846 DOI: 10.7759/cureus.10680
    Headache can be a primary or secondary disorder. The characteristics of headache and its associated features, especially the presence of red flag signs, are important in distinguishing secondary from primary causes. Hemicrania continua is a type of primary headache disorder characterized by a continuous unilateral headache with episodes of exacerbations and association with cranial autonomic symptoms, which include several ocular symptoms. The absolute response to indomethacin remains the hallmark of this disease. We would like to report a rare case of hemicrania continua with scintillating scotoma during exacerbations apart from the typical autonomic features of conjunctival injection, ptosis, eyelid edema, and lacrimation.
    Matched MeSH terms: Longitudinal Studies
  19. Kaka U, Saifullah B, Abubakar AA, Goh YM, Fakurazi S, Kaka A, et al.
    BMC Vet Res, 2016 Sep 9;12(1):198.
    PMID: 27612660
    Central sensitization is a potential severe consequence of invasive surgical procedures. It results in postoperative and potentially chronic pain enhancement. It results in postoperative pain enhancement; clinically manifested as hyperalgesia and allodynia. N-methyl-D-aspartate (NMDA) receptor plays a crucial role in the mechanism of central sensitisation. Ketamine is most commonly used NMDA-antagonist in human and veterinary practice. However, the antinociceptive serum concentration of ketamine is not yet properly established in dogs. Six dogs were used in a crossover design, with one week washout period. Treatments consisted of: 1) 0.5 mg/kg ketamine followed by continuous rate infusion (CRI) of 30 μg/kg/min; 2) 0.5 mg/kg ketamine followed by CRI of 30 μg/kg/min and lidocaine (2 mg/kg followed by CRI of 100 μg/kg/min); and 3) 0.5 mg/kg ketamine followed by CRI of 50 μg/kg/min. The infusion was administered up to 120 min. Nociceptive thresholds and ketamine serum concentrations were measured before drug administration, and at 5, 10, 20, 40, 60, 90, 120, 140 and 160 min after the start of infusion.
    Matched MeSH terms: Longitudinal Studies
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