Publications by authors named "Leong T"

Background: Constrained resources under universal health coverage (UHC) necessitate a balance between medication costs and essential health system requirements. Policymakers practice priority-setting, as either implicit or explicit rationing, embedded in evidence-informed decision-making processes to guide funding decisions. Health technology assessment (HTA) is a method that may assist explicit evidence-informed priority setting.

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Aims: While systemic management of high risk colon cancer is well addressed, advances in local management remain incremental. This study aims to identify a group of colon cancer patients where local management remains a challenge, and where intensifying local treatment with radiotherapy is potentially beneficial to minimise the risk of an R1 resection.

Materials And Methods: The patients with select cT4 locally advanced primary colon (LAPC) (n = 40) and locally recurrent colon (LRC) (n = 48) adenocarcinomas who received neoadjuvant radiotherapy from 2005 to 2020 were studied.

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  • * Researchers used light to activate specially designed nanoparticles that can increase the permeability of the BSCB, allowing normally restricted peptides to enter the spinal cord without harming the surrounding cells or affecting movement.
  • * The method effectively delivered the peptide bombesin into the spinal cord, leading to a quick rise in itching behavior in mice, showcasing potential for non-invasive therapies targeting spinal cord conditions.
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  • Academic-government partnerships are crucial for providing timely evidence to inform decision-making during emergencies, like the COVID-19 pandemic in South Africa, utilizing integrated knowledge translation (KT) approaches.
  • The study employed Cochrane's KT Framework to analyze activities, such as producing rapid reviews and engaging stakeholders, that facilitated evidence-informed decision-making.
  • Key findings emphasize the significance of authentic partnerships, systematic stakeholder engagement, tailored KT strategies, and the need for ongoing evaluation to improve future emergency response efforts.
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Altered mechanotransduction has been proposed as a putative mechanism for disease pathophysiology, yet evidence remains scarce. Here we introduce a concept we call single cell immuno-mechanical modulation, which links immunology, integrin biology, cellular mechanics, and disease pathophysiology and symptomology. Using a micropatterned hydrogel-laden coverslip compatible with standard fluorescence microscopy, we conduct a clinical mechanobiology study, specifically focusing on immune thrombocytopenia (ITP), an autoantibody-mediated platelet disorder that currently lacks a reliable biomarker for bleeding risk.

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  • Many child health guidelines in Malawi, Nigeria, and South Africa are old and don’t involve enough people in making decisions.
  • The GELA project helped create better guidelines by getting groups together to discuss and prioritize the most important child health topics, using current evidence to adapt existing recommendations.
  • National teams in these countries created five new recommendations for child health, but they needed more evidence and training to make good decisions.
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Background: In Western countries, the current standard of care for resectable gastric cancer is perioperative chemotherapy. Preoperative chemoradiotherapy has been considered, but data are limited regarding this treatment as compared with perioperative chemotherapy alone.

Methods: We conducted an international, phase 3 trial in which patients with resectable adenocarcinoma of the stomach or gastroesophageal junction were randomly assigned to receive preoperative chemoradiotherapy plus perioperative chemotherapy or perioperative chemotherapy alone (control).

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Objective: To explore the experience of patients with incontinence and incontinence-associated dermatitis (IAD) in acute care hospitals and their family caregivers, including their perceptions and management, as well as the impact on their wellbeing.

Method: A qualitative exploratory study design was employed in 18 wards across six acute/subacute hospitals in New South Wales, Australia. Patients with incontinence (with or without IAD) were invited to participate.

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  • Lung cancer is a major health issue in Australia and New Zealand, with 16,000 new cases annually, and variations in care and outcomes have been noted over the years without established benchmarks.
  • A study utilized a modified eDelphi consensus process to define clinical quality indicators relevant to lung and thoracic cancer care, involving clinicians, patient advocates, and researchers from across the region.
  • Ultimately, 27 clinical quality indicators were agreed upon, aiming to improve the quality of care, with plans for future implementation using real-world data across Australia.
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Background: South Africa has a high HIV incidence and oral pre-exposure prophylaxis (PrEP) is available as public-sector standard of care. Access to alternative prevention methods for women may further reduce HIV acquisition.

Setting: South African public sector.

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Eligibility criteria for lung cancer screening increasingly need to consider family history of lung cancer, as well as age and smoking status. Lung cancer screening will reveal a multitude of incidental findings, of variable clinical significance, and with a need for clear pathways of management. Pulmonary nodule sampling is enhanced by intra-procedural imaging and cutting-edge robotic technology.

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The study aimed to evaluate the effect of an intervention on the prevalence and severity of incontinence-associated dermatitis (IAD) in six hospitals in one state in Australia. This quasi-experimental pre-and post-study, conducted in 18 wards, was part of a larger implementation science study on incontinence-associated dermatitis. Skin and incontinence assessments were conducted on patients during February and March 2020 (pre-intervention) and July and August 2021 (post-intervention).

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Background And Objectives: Bio-medical image segmentation models typically attempt to predict one segmentation that resembles a ground-truth structure as closely as possible. However, as medical images are not perfect representations of anatomy, obtaining this ground truth is not possible. A surrogate commonly used is to have multiple expert observers define the same structure for a dataset.

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Background And Objective: Unwarranted variations in lung cancer care have been well described in both Australia and Aotearoa New Zealand, with shortfalls in hospital-based workforce and infrastructure previously demonstrated. A survey of lung cancer clinicians was performed to gain an updated understanding of current workforce and infrastructure.

Methods: An online Qualtrics survey included questions on institutional demographics, estimated lung cancer case load, multidisciplinary team (MDT) characteristics including workforce and local infrastructure.

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Background: Low and middle-income countries remain disproportionately affected by high rates of child mortality. Clinical practice guidelines are essential clinical tools supporting implementation of effective, safe, and cost-effective healthcare. High-quality evidence-based guidelines play a key role in improving clinical management to impact child mortality.

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Natural language processing unfolds information overtime as spatially separated, multimodal, and interconnected neural processes. Existing noninvasive subtraction-based neuroimaging techniques cannot simultaneously achieve the spatial and temporal resolutions required to visualize ongoing information flows across the whole brain. Here we have developed rapid phase-encoded designs to fully exploit the temporal information latent in functional magnetic resonance imaging data, as well as overcoming scanner noise and head-motion challenges during overt language tasks.

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This study evaluated the usability and effectiveness of an artificial intelligence application for wound assessment and management from a clinician-and-patient perspective. A quasi-experimental design was conducted in four settings in an Australian health service. Data were collected from patients in the standard (n=166,243 wounds) and intervention (n=124,184 wounds) group, at baseline and post-intervention.

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The objective of this study was to assess the viability and acceptability of an innovative Virtual Wound Care Command Centre where patients in the community, and their treating clinicians, have access to an expert wound specialist service that comprises a digital wound application (app) for wound analysis, decision-making, remote consultation, and monitoring. Fifty-one patients with chronic (42.6%) wounds were healed, with a median time to healing of 66 (95% CI: 56-88) days.

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Background: The EQUIPPED (Enhancing Quality of Prescribing Practices for Older Adults Discharged from the Emergency Department) medication safety program is an evidence-informed quality improvement initiative to reduce potentially inappropriate medications (PIMs) prescribed by Emergency Department (ED) providers to adults aged 65 and older at discharge. We aimed to scale-up this successful program using (1) a traditional implementation model at an ED with a novel electronic medical record and (2) a new hub-and-spoke implementation model at three new EDs within a health system that had previously implemented EQUIPPED (hub). We hypothesized that implementation speed would increase under the hub-and-spoke model without cost to PIM reduction or site engagement.

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Objectives: Guidelines and essential medicine lists (EMLs) bear similarities and differences in the process that lead to decisions. Access to essential medicines is central to achieve universal health coverage. The World Health Organization (WHO) EML has guided prioritization of essential medicines globally for nearly 50 years, and national EMLs (NEMLs) exist in over 130 countries.

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