Publications by authors named "Karahalios A"

Understanding how dental attendance evolves throughout life can inform targeted preventive health care policies by identifying key moments when people are more or less likely to seek dental care. Trajectory modeling of age and time trajectories takes a life course approach to understanding dental attendance, offering insights into both developmental perspectives (e.g.

View Article and Find Full Text PDF

Introduction: Oral health care impacts of unemployment are not well understood. This is particularly important as many people, even in high-income countries, lack publicly funded oral health care, creating a financial burden for working-age individuals. This study aims to investigate the short-term effect of becoming unemployed on affordability of oral health care among working-age Australian adults.

View Article and Find Full Text PDF

Background: The TARGET Protein trial will evaluate the effect of greater enteral protein delivery (augmented protein) on clinical outcomes of critically ill adult patients when compared to usual care.

Objective: To describe the statistical analysis plan for the TARGET Protein trial.

Methods: TARGET Protein is a cluster randomized, cross-sectional, double cross-over, open-label, registry-embedded, pragmatic clinical trial conducted across Australia and New Zealand.

View Article and Find Full Text PDF

Objectives: The interrupted time series (ITS) design is commonly used to investigate the impact of an intervention or exposure in public health. There are many statistical methods that can be used to analyse ITS data and to meta-analyse their results. We undertook two empirical studies to investigate: (i) how effect estimates (and associated statistics) compared when six statistical methods were applied to 190 real-world datasets; and (ii) how meta-analysis effect estimates (and associated statistics) compared when the combinations of two ITS analysis methods and five meta-analysis methods were applied to 17 real-world meta-analyses including 283 ITS datasets.

View Article and Find Full Text PDF

Background: Higher concentration of insulin-like growth factor-1 (IGF-1) increases postmenopausal breast cancer risk, but evidence for insulin and c-peptide is limited. Further, not all studies have accounted for potential confounding by biomarkers from other biological pathways, and not all were restricted to estrogen receptor (ER)-positive breast cancer.

Methods: This was a case-cohort study of 1,223 postmenopausal women (347 with ER-positive breast cancer) from the Melbourne Collaborative Cohort Study.

View Article and Find Full Text PDF

Background: Advanced age is an independent risk factor for poor outcomes following aneurysmal subarachnoid haemorrhage (SAH). However, Australian data are lacking. Our aim was to evaluate outcomes for older patients admitted to an Australian intensive care unit for management of aneurysmal SAH.

View Article and Find Full Text PDF

Objectives: In research evaluating statistical analysis methods, a common aim is to compare point estimates and CIs calculated from different analyses. This can be challenging when the outcomes (and their scale ranges) differ across datasets. We therefore developed a graphical method, the "Banksia plot", to facilitate pairwise comparisons of different statistical analysis methods by plotting and comparing point estimates and CIs from each analysis method, both within and across datasets.

View Article and Find Full Text PDF
Article Synopsis
  • Critically ill patients with traumatic brain injury (TBI) may face extended ICU stays, but the effect of increased enteral nutrition energy delivery on their quality of life is unclear.
  • This study aimed to compare the quality of life of TBI survivors on an augmented energy diet (1.5 kcal/ml) versus a routine diet (1.0 kcal/ml) at six months post-admission, while also examining energy delivery, gastrointestinal tolerance, and mortality outcomes.
  • Results showed no significant difference in quality of life between the two groups, though those on augmented nutrition received more energy without increased gastrointestinal issues.
View Article and Find Full Text PDF
Article Synopsis
  • The study looked at how amino acids (tiny parts of protein) might help people in the hospital who are really sick from losing muscle.
  • They checked many research papers and found 30 studies on this topic, involving almost 2000 patients.
  • The results were mixed, with some studies showing benefits and others showing no change or even worsening of muscle loss, making it hard to tell if amino acids definitely help.
View Article and Find Full Text PDF

Background: Depression is more common in people with multiple sclerosis (MS) compared to the general population. While many interventions are available for treating depressive symptoms in people with MS, it is unclear how different intervention modalities compare. This systematic review aimed to compare the reported effectiveness, safety, and tolerability of interventions for treating depressive symptoms in people with MS.

View Article and Find Full Text PDF

Background: Social disadvantage leads to dental caries during childhood.

Aim: This study investigated whether dental caries occur earlier in children from households experiencing social disadvantage than those not experiencing social disadvantage.

Design: The overall risk of, and relative time to, early childhood caries (ECC) according to sociodemographic characteristics in Victoria, Australia, was quantified.

View Article and Find Full Text PDF

Objective: Primary care practitioners are crucial to engaging people in Australia's national cervical screening program. From July 2022, practitioners have been able to offer all screen-eligible people the choice to collect their own self-collected sample; an option introduced to increase equity. This study explored how practitioners are intending to incorporate universal access to self-collection into their clinical care.

View Article and Find Full Text PDF
Article Synopsis
  • Survivors of colorectal cancer are at risk for developing a second primary colorectal cancer, termed metachronous colorectal cancer, and identifying features of the first tumor could help improve surveillance strategies.
  • In a study of 6085 colorectal cancer cases from the Colon Cancer Family Registry, 138 (2.3%) developed metachronous CRC over an average follow-up of 12 years, with specific factors influencing their risk.
  • Notably, individuals with synchronous tumors were 3.4 times more likely, and those with MMR-deficient tumors had a 72% higher risk, while those with an undifferentiated histologic type were 77% less likely to develop a second cancer. Existing surveillance guidelines may need
View Article and Find Full Text PDF

Objectives: Hypophosphatemia occurs frequently. Enteral, rather than IV, phosphate replacement may reduce fluid replacement, cost, and waste.

Design: Prospective, randomized, parallel group, noninferiority clinical trial.

View Article and Find Full Text PDF

Background: During critical illness skeletal muscle wasting occurs rapidly. Although beta-hydroxy-beta-methylbutyrate (HMB) is a potential treatment to attenuate this process, the plasma appearance and muscle concentration is uncertain.

Methods: This was an exploratory study nested within a blinded, parallel group, randomized clinical trial in which critically ill patients after trauma received enteral HMB (3 g daily) or placebo.

View Article and Find Full Text PDF

Background: Guidelines recommend prioritizing protein provision while avoiding excessive energy delivery to critically ill patients with coronavirus disease 2019 (COVID-19), but there are no prospective studies evaluating such a targeted approach in this group. We aimed to evaluate the effect of a "higher-protein formula protocol" on protein, energy, and volume delivery when compared with standard nutrition protocol.

Methods: This was a retrospective cohort study of adult patients with COVID-19 who received mechanical ventilation for >72 h and enteral nutrition.

View Article and Find Full Text PDF

Purpose: Sex-steroid hormones are associated with postmenopausal breast cancer but potential confounding from other biological pathways is rarely considered. We estimated risk ratios for sex-steroid hormone biomarkers in relation to postmenopausal estrogen receptor (ER)-positive breast cancer, while accounting for biomarkers from insulin/insulin-like growth factor-signaling and inflammatory pathways.

Methods: This analysis included 1208 women from a case-cohort study of postmenopausal breast cancer within the Melbourne Collaborative Cohort Study.

View Article and Find Full Text PDF

Background: The Interrupted Time Series (ITS) is a robust design for evaluating public health and policy interventions or exposures when randomisation may be infeasible. Several statistical methods are available for the analysis and meta-analysis of ITS studies. We sought to empirically compare available methods when applied to real-world ITS data.

View Article and Find Full Text PDF

Objective: To investigate the impact of age and parity on the experience on relief and regret following elective hysterectomy for benign disease, and to explore the factors that impact relief and regret.

Design: Retrospective cross-sectional survey of a cohort.

Setting: Single-centre tertiary hospital in Melbourne, Australia.

View Article and Find Full Text PDF
Article Synopsis
  • - A systematic review and meta-analysis were conducted to identify risk factors for metachronous colorectal cancer (CRC) and advanced neoplasia, analyzing 22 studies involving over 625,000 participants from various databases up to February 2021.
  • - Key findings indicated that individuals diagnosed with initial CRC alongside synchronous advanced lesions had significantly higher risks of developing metachronous CRC or advanced neoplasia, with risk ratios showing a strong correlation.
  • - Factors such as the location of the first CRC (distal versus proximal) and increasing age were significant, with the latter showing a consistent increase in risk for advanced neoplasia, while lifestyle factors did not demonstrate any notable associations.
View Article and Find Full Text PDF

Background: In areas co-endemic for Plasmodium vivax and Plasmodium falciparum there is an increased risk of P vivax parasitaemia following P falciparum malaria. Radical cure is currently only recommended for patients presenting with P vivax malaria. Expanding the indication for radical cure to patients presenting with P falciparum malaria could reduce their risk of subsequent P vivax parasitaemia.

View Article and Find Full Text PDF

Purpose: Sex-steroid hormones are associated with postmenopausal breast cancer but potential confounding from other biological pathways is rarely considered. We estimated risk ratios for sex-steroid hormone biomarkers in relation to postmenopausal estrogen receptor (ER)-positive breast cancer, while accounting for biomarkers from insulin/insulin-like growth factor-signaling and inflammatory pathways.

Methods: This analysis included 1,208 women from a case-cohort study of postmenopausal breast cancer within the Melbourne Collaborative Cohort Study.

View Article and Find Full Text PDF
Article Synopsis
  • The TARGET Protein trial will assess whether increasing dietary protein intake in ICU patients, as recommended by international guidelines, leads to better health outcomes compared to current practices.
  • This clinical trial involves eight ICUs in Australia and New Zealand, where each ICU will switch between two different enteral nutrition formulas over a period of 12 months.
  • The main goal is to see if higher protein intake reduces the number of days patients spend in the hospital and improves survival rates at 90 days post-admission.
View Article and Find Full Text PDF