Australian Evidence Research Articles

The food and nutrient intake of 5- to 12-year-old Australian children during school hours: a secondary analysis of the 2011-2012 National Nutrition and Physical Activity Survey.

School food intake of Australian children is not comprehensively described in literature, with limited temporal, nationally representative data. Greater understanding of intake at school can inform school-based nutrition promotion. This study aimed to describe the dietary intake of primary-aged children during school hours and its contribution to daily intake. This secondary analysis used nationally representative, cross-sectional data from the 2011 to 2012 National Nutrition and Physical Activity Survey. Dietary intake was assessed using validated 24-h dietary recalls on school days. Descriptive statistics were undertaken to determine energy, nutrients, food groups and food products consumed during school hours, as well as their contributions to total daily intake. Associations between school food intake and socio-demographic characteristics were explored. Australia. Seven hundred and ninety-five children aged 5-12 years. Children consumed 37 % of their daily energy and 31-43 % of select nutrient intake during school hours, with discretionary choices contributing 44 % of school energy intake. Most children consumed less than one serve of vegetables, meat and alternatives or milk and alternatives during school hours. Commonly consumed products were discretionary choices (34 %, including biscuits, processed meat), bread (17 %) and fruit (12 %). There were limited associations with socio-economic position variables, apart from child age. Children's diets were not aligned with national recommendations, with school food characterised by high intake of discretionary choices. These findings are consistent with previous Australian evidence and support transformation of the Australian school food system to better align school food consumption with recommendations.

Summary of the best evidence for the prevention of intraoperative unplanned hypothermia in patients undergoing laparoscopic surgery.

This study aimed to search, analyze, and summarize relevant evidence for the prevention of unplanned hypothermia in patients undergoing laparoscopic surgery, so as to reduce the incidence of unplanned hypothermia in patients undergoing laparoscopic surgery and provide a reference for clinical medical staff. According to the evidence pyramid model, relevant literature were retrieved by computer in databases. Literature quality evaluation and the evidence grading system of the Australian JBI Evidence-Based Health Care Centre Evidence Recommendation Rating System were used to evaluate the literature quality and determine the level of evidence. The time limit for retrieval was from the establishment of the databases to March 31, 2021. A total of 12 studies were included in this study. Of these, 5 evidence items were finally extracted, and 15 pieces of best evidence were summarized, including the risk assessment of hypothermia in patients undergoing laparoscopic surgery, temperature monitoring, ambient temperature, passive insulation measures, and active insulation measures. The evidence for the prevention of unplanned hypothermia in patients undergoing laparoscopic surgery provided evidence-based approaches for reducing the incidence of intraoperative hypothermia for clinical staffs. It is suggested that the cultural characteristics of China, medical resources, and patients' own conditions should be considered when applying the evidence.

472Long-term effectiveness of 3-dose primary course and 4-year booster dose of pertussis vaccine in Australia

Abstract Background Australia’s National Immunisation Program recommended a 3-dose primary Diphtheria-Tetanus-Pertussis (DTP) vaccination course at 2, 4 and 6 months and a booster dose at 4 years during 2003-2015. We examined vaccine effectiveness by time since doses 3 and 4, as studies to date have shown conflicting results. Methods Perinatal, immunisation, pertussis notification and death data were linked for 1,086,319 infants born in two Australian states in 2003-2012. Administration of DTP doses 3 and 4 from 5.5-7 months and 47-53 months respectively, was considered age-appropriate. Adjusted Cox proportional hazards models with time-varying vaccination status were used to estimate vaccine effectiveness (VE = 1–hazard ratio) against notified pertussis post age-appropriate doses 3 and 4 compared to unvaccinated children, with additional benefit of dose 4 compared to receipt of primary course alone. Results Dose 3 VE declined from 79% (CI 75%-83%) from 0-6 months to 64% (CI 60%-67%) at 6-36 months and 45% (CI 31%-56%) at 36-42 months post-vaccination. Compared to unvaccinated children, VE after dose 4 declined from 83% (CI 80%-86%) at 0-12 months to 67% (CI 60%-72%) and 55% (CI 46%-63%) in the following two 12-month periods post-vaccination. When compared to dose 3, the relative VE for dose 4 was 58% (CI 51%-64%) in 0-18 months post-vaccination. Conclusion and Key messages Our study adds to previous Australian evidence for substantial waning of vaccine induced immunity against pertussis over a 3-year period following dose 3. VE was significantly higher in the 18 months following dose 4 compared to receipt of primary course alone.

The impact of managerial ownership on carbon transparency: Australian evidence

The objective of this study is to examine the impact of managerial ownership on carbon transparency. Agency theory suggests that there is conflict of interest between managers and shareholders, and managers tend to take advantage of information asymmetry to entrench their interest. Further, extant literature indicates that management entrenchment incentives is linked with managerial ownership. Draw on agency theory and the insight from prior studies, we argue and predict that corporate carbon transparency is associated with management entrenchment incentives. We measure management entrenchment using managerial ownership and find a positive association between managerial ownership and carbon transparency in the low (0%–10 %) and high (beyond 30 %) regions of convergence-of-interest. However, this relationship becomes negative when ownership is in the entrenchment region (10%–30 %). The findings suggest that managers with ownership in the regions of convergence-of-interest are inclined to be open and apply a proactive strategy, whereas entrenched managers are likely to be opaque, so become insensitive to call for climate stabilisation and carbon transparency.

Female directors and acquisitions: Australian evidence

This study investigates the influence of female directors on the acquisition decisions of Australian companies. We use a dual approach, conducting empirical analyses while exploring the views of industry experts with extensive acquisition experience. We find that the market perceives acquisitions conducted by acquirers with female board members to be valuecreating decisions. Industry experts believe that female directors apply a broader perspective in evaluating acquisitions without falling into the ‘deal frenzy’ trap, a common occurrence in male directors. Several female directorship traits, combined with enhanced efficiency, contribute to tangible benefits offered by female directors in acquisitions.

Young people who engage in child to parent violence: an integrative review of correlates and developmental pathways

ABSTRACT Objective Review and synthesise Australian and New Zealand research on correlates and predictors of child to parent violence. Method Ten electronic databases were searched for relevant empirical studies. An integrative review methodology was adopted, with the Mixed Methods Appraisal Tool used to assess methodological quality. Results Twenty-one relevant studies met the inclusion criteria. Assessment of methodological quality revealed a moderate level of bias resulting from small sample sizes and a lack of representative sampling, missing outcome data, definitional variations, and inconsistencies in categorising variables across studies. The primary factors identified as correlates were prolonged or early childhood exposure to adult intimate partner violence and adversity, a childhood behavioural pattern of aggressive behaviour, mental health or emotional or behavioural disorders, other criminality and negative peer associations. Conclusion Extracting and understanding developmental pathways in the Australian and New Zealand context that contribute towards child to parent violence was limited by the amount and quality of research. Thus, highlighting the need for further research in this field. KEY POINTS What is already known about this topic: A small amount of research has been conducted in Australia and New Zealand relating to child to parent violence. The factors contributing to a young person engaging in child to parent violence are complex and interrelated. Exposure to adult intimate partner violence in childhood is a known correlate of child to parent violence. What this topic adds: This is the first integrative review of Australian and New Zealand evidence on child to parent violence. While childhood behavioural and emotional disorders were identified as correlates for young people engaging in violence towards parents, this research evidence is not strong. This review reveals a need to examine further the developmental pathways towards child to parent violence, identifying points of intervention best suited to service engagement.

Low-carbon built environments and cardiometabolic health: a systematic review of Australian studies

ABSTRACT Australian cities offer potential for public health impact through low-carbon built environment design interventions, given their high per capita carbon footprint and with car use being a large proportion of transport mode share. Certain neighbourhood built environment features have been shown to influence uptake of active travel (walking and cycling), and thus may have beneficial associations with cardiometabolic health outcomes, such as obesity and type 2 diabetes. This systematic review synthesised Australian evidence on associations between low-carbon built environment attributes (green space and those promoting active transport) and cardiometabolic health in adults. Six databases were systematically searched; 33 articles met the inclusion criteria and 22 were included in a meta-analysis. We found strong evidence for an association of higher levels of walkability with lower risk of overweight/obesity, while there was some evidence linking higher land use mix and supportive walking/cycling infrastructure with lower overweight/obesity risk. Australian policy and advocacy efforts favouring more walkable neighbourhoods (compact, dense, and mixed-use) may have dual benefits for population health and the sustainability of cities. These findings highlight the importance of urban planning and public health practitioners working together to achieve healthy and sustainable cities for all.

Sectoral Performance and the Government Interventions during COVID-19 Pandemic: Australian Evidence

This study explores the contrasting impacts of the COVID-19 pandemic on various industries in Australia. Considering all daily announced information, we analyzed the diverse impacts of COVID-19 on the sectoral stock returns from 26 January to 20 July 2020. Sixteen out of twenty examined stock indices negatively react to the daily rise in COVID-19 confirmed cases. Several actions from the Australian government to control the pandemic are relatively ineffective in boosting the overall financial market; however, some positive interactions are captured in five sectors of industrials, health care, metals and mining, materials, and resources. The result shows that all industries that benefited from government financial assistance are either shielded or less severely affected by the pandemic. While sectors that did not directly receive financial remedies relatively showed no enhancement in their overall performance. Having achieved short-term success in helping the economy, the government recorded an all-time high deficit since 2004 that might eventually lead to adverse effects on the overall economy. The Australian equity market is found to be rationally distinct to the crude oil price risk, while positive correlations between AUD/USD rate and real estate-related sectors are reported.

COVID-19 and Housing Prices: Australian Evidence with Daily Hedonic Returns

Using daily hedonic housing price index for five Australian capital cities, we document a negative relationship between prior COVID-19 cases and daily housing returns. Specifically, the daily housing return drops by 0.35 basis points or 1.26 percentage points annually for every doubling of newly confirmed COVID-19 cases in a state. We also examine the effect of government lockdown orders on housing returns and find insignificant results. These findings are robust under alternative pandemic proxies such as total active COVID-19 cases and other model specifications. Overall, our paper contributes to the literature on the geographic spread of pandemics and real estate prices.

COVID-19 and Housing Prices: Australian Evidence with Daily Hedonic Returns

Using daily hedonic housing price index for five Australian capital cities, we document a negative relationship between prior COVID-19 cases and daily housing returns. Specifically, the daily housing return drops by 0.35 basis points or 1.26 percentage points annually for every doubling of newly confirmed COVID-19 cases in a state. We also examine the effect of government lockdown orders on housing returns and find insignificant results. These findings are robust to using total active COVID-19 cases and other model specifications. Overall, our paper contributes to the literature on the geographic spread of pandemics and real estate prices.

Weekly updates of national living evidence-based guidelines: methods for the Australian living guidelines for care of people with COVID-19

Background and ObjectivesThe Australian National COVID-19 Clinical Evidence Taskforce is a consortium of 31 Australian health professional organisations developing living, evidence-based guidelines for care of people with COVID-19, which are updated weekly. This article describes the methods used to develop and maintain the guidelines. MethodsThe guidelines use the GRADE methods and are designed to meet Australian NHMRC standards. Each week, new evidence is reviewed, current recommendations are revised, and new recommendations made. These are published in MAGIC and disseminated through traditional and social media. Relevant new questions to be addressed are continually sought from stakeholders and practitioners. For prioritized questions, the evidence is actively monitored and updated. Evidence surveillance combines horizon scans and targeted searches. An evidence team appraises and synthesizes evidence and prepares evidence-to-decision frameworks to inform development of recommendations. A guidelines leadership group oversees the development of recommendations by multidisciplinary guidelines panels and is advised by a consumer panel. Results: The Taskforce formed in March 2020, and the first recommendations were published 2 weeks later. The guidelines have been revised and republished on a weekly basis for 24 weeks, and as of October 2020, contain over 90 treatment recommendations, suggesting that living methods are feasible in this context. ConclusionsThe Australian guidelines for care of people with COVID-19 provide an example of the feasibility of living guidelines and an opportunity to test and improve living evidence methods.

Genetic, Morphological and Antigenic Relationships between Mesonivirus Isolates from Australian Mosquitoes and Evidence for Their Horizontal Transmission.

The Mesoniviridae are a newly assigned family of viruses in the order Nidovirales. Unlike other nidoviruses, which include the Coronaviridae, mesoniviruses are restricted to mosquito hosts and do not infect vertebrate cells. To date there is little information on the morphological and antigenic characteristics of this new group of viruses and a dearth of mesonivirus-specific research tools. In this study we determined the genetic relationships of recent Australian isolates of Alphamesonivirus 4 (Casuarina virus—CASV) and Alphamesonivirus 1 (Nam Dinh virus—NDiV), obtained from multiple mosquito species. Australian isolates of NDiV showed high-level similarity to the prototype NDiV isolate from Vietnam (99% nucleotide (nt) and amino acid (aa) identity). Isolates of CASV from Central Queensland were genetically very similar to the prototype virus from Darwin (95–96% nt and 91–92% aa identity). Electron microscopy studies demonstrated that virion diameter (≈80 nm) and spike length (≈10 nm) were similar for both viruses. Monoclonal antibodies specific to CASV and NDiV revealed a close antigenic relationship between the two viruses with 13/34 mAbs recognising both viruses. We also detected NDiV RNA on honey-soaked nucleic acid preservation cards fed on by wild mosquitoes supporting a possible mechanism of horizontal transmission between insects in nature.

Boardroom gender diversity and CEO pay deviation: Australian evidence

AbstractWe study whether boardroom gender diversity affects CEO pay. Specifically, we investigate the association between boardroom gender diversity and CEO pay deviation from the optimal level of CEO pay based on firm characteristics and market performance. Using a sample of 2,288 firm‐year observations for the period 2006–2014, we find that boardroom gender diversity is negatively associated with CEO pay deviation, suggesting that firms with gender‐diverse boards are cautious about the consequences of CEO pay deviation (under/overpayment), and thus likely to bridge the gap between CEO actual pay and expected pay. These findings provide important insights to the global discussion on executive compensation. Our findings are robust to alternative variable specifications, propensity score matching, difference‐in‐differences estimations, and generalised method of moments.

Corporate governance analysts and firm value: Australian evidence

This paper replicates the UK findings in Lehmann (2019) and examines the value implication of corporate governance analysts in the Australian setting. Theoretically, corporate governance analysts create firm value via monitoring the management, enhancing information production and dissemination, and increasing investor recognition. However, we do not find this effect in Australia. Using an exogenous increase in coverage by corporate governance analysts, we find that unlike the case with UK firms, corporate governance analysts do not have any significant effect on firm value in Australia. Different sample compositions, macroeconomic conditions, and institutional settings might be the possible reasons for our insignificant results.

Horizontal inequity in the utilisation of healthcare services in Australia

The Australian universal healthcare system aims to ensure affordable and equitable use of healthcare services based on individual health needs. This paper presents empirical evidence on the extent of horizontal inequity (HI) in healthcare services (unequal utilisation by income for equal need) in Australia during the period of promoting reliance on private healthcare financing. Using data from the most recent Australian National Health Survey of 2011−12 and 2014−15, we examined and measured the extent of HI in eight indicators of out-of-hospital services and hospital-related care. Contrary to earlier studies, our results show a small but pro-rich inequity in the probability of general practitioner visits. Inequity in the distribution of specialist and dentist visits was in favour of richer people, a result that is commonly found in other developed countries and is also consistent with existing Australian evidence. Hospital-related care was equitably distributed compared to the pro-poor pattern found in earlier studies. Despite the universal health insurance system in Australia, there was inequity in the utilisation of needed healthcare services. Our evidence is relevant to similar health systems as governments move to higher out-of-pocket payments and other private sources to reduce pressure on public healthcare expenditure.

Education-related variation in coronary procedure rates and the contribution of private health care in Australia: a prospective cohort study

BackgroundContemporary Australian evidence on socioeconomic variation in secondary cardiovascular disease (CVD) care, a possible contributor to inequalities in cardiovascular disease outcomes, is lacking. This study examined the relationship between education, an individual-level indicator of socioeconomic position, and receipt of angiography and revascularisation procedures following incident hospitalisation for acute myocardial infarction (AMI) or angina, and the role of private care in this relationship.MethodsParticipants aged ≥45 from the New South Wales population-based 45 and Up Study with no history of prior ischaemic heart disease hospitalised for AMI or angina were followed for receipt of angiography or revascularisation within 30 days of hospital admission, ascertained through linked hospital records. Education attainment, measured on baseline survey, was categorised as low (no school certificate/qualifications), intermediate (school certificate/trade/apprenticeship/diploma) and high (university degree). Cox regression estimated the association (hazard ratios [HRs]) between education and coronary procedure receipt, adjusting for demographic and health-related factors, and testing for linear trend. Private health insurance was investigated as a mediating variable.ResultsAmong 4454 patients with AMI, 68.3% received angiography within 30 days of admission (crude rate: 25.8/person-year) and 48.8% received revascularisation (rate: 11.7/person-year); corresponding figures among 4348 angina patients were 59.7% (rate: 17.4/person-year) and 30.8% (rate: 5.3/person-year). Procedure rates decreased with decreasing levels of education. Comparing low to high education, angiography rates were 29% lower among AMI patients (adjusted HR = 0.71, 95% CI: 0.56–0.90) and 40% lower among angina patients (0.60, 0.47–0.76). Patterns were similar for revascularisation among those with angina (0.78, 0.61–0.99) but not AMI (0.93, 0.69–1.25). After adjustment for private health insurance status, the HRs were attenuated and there was little evidence of an association between education and angiography among those admitted for AMI.ConclusionsThere is a socioeconomic gradient in coronary procedures with the most disadvantaged patients being less likely to receive angiography following hospital admission for AMI or angina, and revascularisation procedures for angina. Unequal access to private health care contributes to these differences. The extent to which the remaining variation is clinically appropriate, or whether angiography is being underused among people with low socioeconomic position or overused among those with higher socioeconomic position, is unclear.

Social Work Doctoral Education in Australia: The Case for Further Development

ABSTRACT Social work education in Australia has been based in universities since the 1940s. There are now 32 higher education providers offering social work programs across Australia. The significant growth in master’s level qualifying programs in Australia, along with recent higher education policy changes, has increased the need for social work academic faculty members with doctoral qualifications. This paper presents the findings of a scoping review of literature on social work doctoral education. Despite a growing literature on social work doctoral education in international contexts, the review found that there is a lack of Australian research and evidence on social work doctoral pedagogy, the number and diversity of doctoral students, the doctoral student experience, and doctoral graduate employment intentions and outcomes. Addressing the lack of Australian research in this area would be an important step to enabling Australian social work to address future research training and capacity needs and directions. IMPLICATIONS There is a lack of research on Australian social work doctoral education and this is a neglected aspect of social work scholarship of teaching and learning (SOTL) research. Research into social work doctoral education would provide baseline information on the number and diversity of students, doctoral student experiences, graduate outcomes, and employment intentions. Development of social work SOTL about doctoral education would support future research capacity and enable the advancement of social work research knowledge and skills.

Drivers of soccer fan loyalty: Australian evidence on the influence of team brand image, fan engagement, satisfaction and enduring involvement

PurposeThe purpose of the paper is to contribute to the extant sport marketing literature by positing fan engagement, team brand image and cumulative fan satisfaction with the team as factors influencing attitudinal and behavioural soccer (football) fan loyalty, with enduring involvement with the team as a moderator.Design/methodology/approachA convenience sample of Australian A-League soccer fans completed a paper-and-pencil, self-administered survey to evaluate their team on the focal constructs. A total of 207 participants were recruited from a major Australian east-coast university.FindingsUsing partial least squares-structural equation modelling (PLS-SEM), the study found that fan engagement influences both team brand image and cumulative fan satisfaction, while team brand image also influences cumulative fan satisfaction, and both of these constructs influence attitudinal loyalty and behavioural loyalty. The moderating role of enduring involvement was also found for two relationships: team brand image → attitudinal loyalty and team brand image → behavioural loyalty, along with a mediating role of attitudinal loyalty.Originality/valueThis study increases our understanding of the reasons why soccer fans are committed to and exhibit fan-related behaviours for a team, thus contributing to the sports-marketing literature on the relationships amongst fan engagement, team brand image, cumulative fan satisfaction, attitudinal loyalty and behavioural loyalty, along with the moderating role of enduring involvement. The findings also assist sports-marketing practitioners to formulate more effective, fan-centric marketing-communication strategies leading to a larger loyal fan base.

Corporate social responsibility and debt maturity: Australian evidence

This study investigates the relationship between corporate social responsibility (CSR) and debt maturity. After controlling for other determinants of debt maturity, we find that socially responsible firms exhibit longer debt maturity than other firms, supporting the view that CSR facilities firms' access to long-term debts. Further analysis shows that the effect of CSR on debt maturity is stronger for firms operating in the mining industry and firms with a higher level of information asymmetry. Our findings are robust to alternative variable measurements as well as endogeneity and sample selection bias controls.

Investigating the Clinical Significance and Research Discrepancies of Balance Training in Degenerative Cerebellar Disease: A Systematic Review.

The aims of this study were to understand the clinical significance of balance training in degenerative cerebellar disease and to analyze inconsistencies among published data. Five databases were searched from inception to October 8, 2019. Cochrane guidelines informed review methods, and Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were followed. The Australian National Health and Medical Research Council Evidence Hierarchy, PEDro scale, and Joanna Briggs Institute Critical Appraisal Tools were used to evaluate methodological quality. Outcome measures examined included ataxia severity, gait speed, and balance. Fourteen articles were identified that met inclusion criteria. The quality of evidence was moderate to high, with recent articles being of higher quality. Nine of 12 articles showed statistical improvements in ataxia severity (reduction ranging from 1.4 to 2.8 in the Scale for the Assessment and Rating of Ataxia points), three of eight showed statistical improvements in gait speed (average increase of 0.1 m/sec), and six of nine showed improvements in balance measures (average increase of 1.75 in Berg Balance Scale and 1.5 in Dynamic Gait Index). Most studies showed statistical and clinically significant ataxia severity improvements in subjects who performed balance training. The amount of balance challenge and frequency of training were important factors in determining the extent of training benefit. Gait speed may also improve if walking exercises are included in the balance training, but more studies need to be conducted. Balance measures statistically improved with training, but these improvements did not meet criteria for clinical significance. Complete the self-assessment activity and evaluation online at http://www.physiatry.org/JournalCME CME OBJECTIVES: Upon completion of this article, the reader should be able to: (1) Describe the cause(s) of discrepancies in the literature regarding the benefits of balance training in degenerative cerebellar disease; (2) Determine if benefits from balance training are clinically meaningful for individuals with cerebellar degeneration; and (3) Understand the best practices gleaned from the current literature regarding balance training for these diseases. Advanced ACCREDITATION: The Association of Academic Physiatrists is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians.The Association of Academic Physiatrists designates this Journal-based CME activity for a maximum of 1.0 AMA PRA Category 1 Credit(s)™. Physicians should only claim credit commensurate with the extent of their participation in the activity.