Andrew Hayen's research while affiliated with University of Technology Sydney and other places

Publications (285)

Article
Full-text available
Maternal and child mortality remain unacceptably high in the Sustainable Development Goals era. Continuum of care has become a key strategy for improving the health of mothers and newborns. Previous research on the continuum of care in Ethiopia is often limited to maternal health services. Maternal and child health services are inseparably linked,...
Article
Full-text available
Background Many countries implementing pro-poor reforms to expand subsidized health care, especially for the poor, recognize that high-quality healthcare, and not just access alone, is necessary to meet the Sustainable Development Goals. As the poor are more likely to use low quality health services, measures to improve access to health care need t...
Article
Objectives To determine the association between after-hours consultations and the likelihood of antibiotic prescribing for self-limiting upper respiratory tract infections (URTIs) in primary care practices. Design A cross-sectional analysis using Australian national primary-care practice data (MedicineInsight) between February 1, 2016 and January...
Article
Full-text available
Background: Most pregnant women in low and lower-middle-income countries do not receive all components of antenatal care (ANC), including counselling on obstetric danger signs. Facility-level ANC guidelines and provider in-service training are major factors influencing ANC counselling. In Ethiopia, little is known about the extent to which guideli...
Article
Full-text available
Background Gestational weight gain (GWG) is an important indicator of fetal well-being during pregnancy. Inadequate or excessive GWG could have undesirable effects on birth weight. However, information regarding the influence of GWG on birth weight is lacking from the Ethiopian setting. Objective This study aimed to determine the influence of GWG...
Article
Full-text available
Introduction Access to emergency neonatal health services has not been explored widely in the Ethiopian context. Accessibility to health services is a function of the distribution and location of services, including distance, travel time, cost and convenience. Measuring the physical accessibility of health services contributes to understanding the...
Article
Full-text available
Conventionally used coverage measures do not reflect the quality of care. Effective coverage (EC) assesses the extent to which health care services deliver potential health gains to the population by integrating concepts of utilization, need and quality. We aimed to conduct a systematic review of studies evaluating EC of maternal and child health s...
Article
This study evaluates the effectiveness of a science-based beach safety presentation given to multiple audiences in Sydney, NSW, Australia. A total of 383 attendees aged 14 years and over completed pre- and post-intervention surveys associated with 10 Science of the Surf (SOS) presentations with 121 completing a follow-up survey. Following the prese...
Article
Background and objectives: The Giving Asthma Support to Patients (GASP) program, developed in New Zealand, guides practice nurses to provide structured asthma care. This study assessed GASP in the context of Australian general practice. Method: The study used a pre-post design and was conducted in 19 practices in Western Sydney and Illawarra/Sho...
Article
Full-text available
Aim: To assess whether the observed numbers and seasonality of deaths in Australia during 2020 differed from expected trends based on 2015-19 data. Methods: We used provisional death data from the Australian Bureau of Statistics, stratified by state, age, sex and cause of death. We compared 2020 deaths with 2015-19 deaths using interrupted time...
Article
Background: Myocardial infarction mortality has declined since the 1970s, but contemporary drivers of this trend remain unexplained. The aim of this study was to compare the contribution of trends in event rates and case fatality to declines in myocardial infarction mortality in four high-income jurisdictions from 2002-15. Methods: Linked hospit...
Article
Full-text available
Background: In 2014, Indonesia launched a single payer national health insurance scheme with the aim of covering the entire population by 2024. The objective of this paper is to assess the equity with which contributions to the health financing system were distributed in Indonesia over 2015 - 2019. Methods: This study is a secondary analysis of...
Article
Full-text available
To demonstrate that days are important in extreme prematurity when creating survival prediction models based on gestation. Prospectively collected data were analysed for all admitted infants born 23 + 0 to 27 + 6 weeks gestation in the Australian and New Zealand Neonatal Network from 2009 to 2016. The effect of days on observed survival rates was a...
Article
Introduction This study examines the association between treatment in a therapeutic community for adolescents with drug and alcohol problems on hospitalisation outcomes up to 15 years later for all clients, and separately for those with and without a history of criminal conviction. Method A quasi-experimental design was used to examine the linked...
Article
Full-text available
Background The inclusion criterion for active surveillance (AS) is low- or intermediate-risk prostate cancer. The predictive value of the presence of a suspicious lesion at magnetic resonance imaging (MRI) at the time of inclusion is insufficiently known. Objective To evaluate the percentage of patients needing active treatment stratified by the p...
Article
Full-text available
Background Vaccines have substantially contributed to reducing morbidity and mortality among children, but inequality in coverage continues to persist. In this study, we aimed to examine inequalities in child vaccination coverage in sub-Saharan Africa. Methods We analysed Demographic and Health Survey data in 25 sub-Saharan African countries. We d...
Article
Full-text available
Background: Improved access to and quality obstetric care in health facilities reduces maternal and neonatal morbidity and mortality. We examined spatial patterns, within-country wealth-related inequalities and predictors of inequality in skilled birth attendance and caesarean deliveries in sub-Saharan Africa. Methods: We analysed the most recen...
Article
Background: Australian Red Cross Lifeblood (Lifeblood) advises donors to visit their general practitioner (GP) for medical follow-up if they are deferred from donating due to having a lower than acceptable level of hemoglobin (Hb) and/or serum ferritin (iron-related deferrals). Methods: We used the Sax Institute's 45 and Up Study data linked to...
Article
Full-text available
Background Early childhood is a period when dietary behaviours are established. This study aimed to examine the longitudinal intake of core and discretionary foods and identify early life and socio-economic factors influencing those intakes. Methods Mother-infant dyads ( n = 934) from the Healthy Smiles Healthy Kids study , an ongoing birth cohort...
Article
Background Analyses of legacy effects are mainly based on post-trial follow-up study after initial randomized controlled trials (RCT). However, the differential event rates between arms may cause a violation of randomization balance and induce selection bias in the post-trial analysis. We conducted a simulation to illustrate the bias and explore if...
Article
Background Young people with problematic alcohol and other drug (AOD) use are often referred to residential treatment. Subsequent mortality rates among this high-risk group is not known. This study estimates mortality rates and determines causes of death amongst young people referred to residential treatment in Sydney, Australia. Design Retrospect...
Article
Background Many blood collection agencies are generating important data on donor health outcomes using large-scale blood donor cohort studies. Such studies can be very effective when donors provide access to linkage of their data to external health databases, and storage and genomic testing of their blood sample. In this study, we aimed to assess t...
Article
Full-text available
Plain language summary Pregnant women are expected to gain weight due to various biological changes. Gaining inadequate or excessive weight during pregnancy poses a health risk to the mother and baby. Inadequate weight gain is a public health concern in low-income countries, including Ethiopia. This study assessed patterns and predictors of weight...
Article
Full-text available
This study examines the impact of longitudinal dietary trajectories on obesity and early childhood caries (ECC) in preschool children in Australia. Mother–infant dyads from the Healthy Smiles Healthy Kids study were interviewed at 4 and 8 months, and 1, 2, and 3 years of age. Children underwent anthropometric and oral health assessments between 3 a...
Preprint
Full-text available
Background: Ethiopia is a Sub-Saharan country with very high neonatal mortality rates, varying across its regions. The rate of neonatal mortality reduction in Ethiopia is slow, and Ethiopia may not meet the third United Nations sustainable development target by 2030. This study aimed to investigate the spatial variations and contributing factors fo...
Article
Full-text available
The use of quality antenatal care (ANC) improves maternal and newborn health outcomes. Ensuring equity in access to quality maternal health services is a priority agenda in low- and middle-income countries. This study aimed to assess inequalities in the use of quality ANC in nine East African countries using the most recent Demographic and Health S...
Article
Full-text available
PurposeRoutine urine testing is recommended prior to antibiotic treatment for urinary tract infections (UTIs) among high-risk groups for complicated UTIs. This study aims to examine whether the proportion of UTI encounters where antibiotics are prescribed that have accompanying urine testing differs by patient groups.MethodsA retrospective analysis...
Article
Full-text available
Introduction In low-and middle-income countries, pregnancy-related complications are major causes of death for young women. This study aimed to determine the prevalence of first adolescent pregnancy and its associated factors in sub-Saharan Africa. Methods We undertook a secondary analysis of cross-sectional data from Demographic and Health Surveys...
Article
Full-text available
Background The incidence of gestational breast cancer (GBC) is increasing in high-income countries. Our study aimed to examine the epidemiology, management and outcomes of women with GBC in New South Wales (NSW), Australia. Methods A retrospective cohort study using linked data from three NSW datasets. The study group comprised women giving birth...
Article
Objective Ischaemic heart disease (IHD) is a major source of disease burden worldwide. Recent trends show incidence is declining but it is unclear whether the trends are similar in urban and rural populations. This study examines the trends of IHD events (i.e. hospitalisations and deaths) in New South Wales, Australia by rurality. Methods This was...
Article
Background: Myocardial infarction mortality has declined since the 1970s, but contemporary drivers of this trend remain unexplained. The aim of this study was to compare the contribution of trends in event rates and case fatality to declines in myocardial infarction mortality in four high-income jurisdictions from 2002–15. Methods: Linked hospitali...
Article
Objectives The objective of the study was to assess the methods used, and potential for bias, in posttrial studies of cardiovascular disease (CVD) where legacy effects may be estimated. Study Design and Setting We undertook a methods review of posttrial studies after randomized controlled trials (RCTs) of interventions to prevent CVD. For each inc...
Article
Full-text available
Understanding the determinants of early introduction of sugar sweetened beverages (SSBs) may assist in designing effective public health interventions to prevent childhood weight related conditions (obesity). This study explores the relationship between family/infant characteristics and the early introduction of SSBs among infants in Sydney, Austra...
Article
Full-text available
Objectives: To examine the representation and framing in Australian print media of methamphetamine and methamphetamine users from 2014 to 2016 when media attention was heightened around the National Ice Taskforce, including the implications of the coverage and framing in limiting public health responses to the problem. Methods: A quantitative media...
Article
Background Stroke prevention via lifestyle modification is a public health priority in developed countries. Few studies have examined the association of high-risk lifestyle factors with long-term mortality of stroke survivors. Therefore, this study aims to explore the effect of key lifestyle factors on all-cause mortality after stroke. Methods Sam...
Article
Background This is a case study for recurrent stroke prevention. Lifestyle factors account for about 80% of the risk of recurrent stroke. Most health services studies examining stroke prevention rely on stroke survivors' self-reported lifestyle behaviour data. How can researchers increase the value of collected self-reported data to provide additio...
Article
In low- and middle-income countries, patients may travel abroad to seek better health services or treatments that are not available at home, especially in regions where great disparities exist between the standard of care in neighbouring countries. While awareness of South–South medical travels has increased, only a few studies investigated this ph...
Article
Full-text available
Objective: To estimate the extent that BP measurement variability may drive over- and underdiagnosis of 'hypertension' when measurements are made according to current guidelines. Methods: Using data from the National Health and Nutrition Examination Survey and empirical estimates of within-person variability, we simulated annual SBP measurement...
Article
Full-text available
The aim of this study was to report on breastfeeding duration up to 24 months and determine the predictors of breastfeeding duration among women in South Western Sydney, one of the most culturally diverse and socioeconomically disadvantaged regions of New South Wales (NSW), Australia. Mother–infant dyads (n = 1035) were recruited to the Healthy Smi...
Article
Full-text available
The incorrect use of child car seats is common, with significant negative effects on crash protection for child passengers. There is currently little evidence for effective, practical countermeasures for incorrect use. The provision of clear and comprehensible materials on correct use supplied with restraints at the point of sale could be highly co...
Article
Full-text available
Background: Anticoagulation for preventing stroke in atrial fibrillation is under-utilised despite evidence supporting its use, resulting in avoidable death and disability. We aimed to evaluate an intervention to improve the uptake of anticoagulation. Methods: We carried out a national, cluster randomised controlled trial in the Australian prima...
Article
Full-text available
Introduction There is a paucity of research examining models of maternal and child health (MCH) care for refugees in high-income countries. Attention has focused on tailoring existing healthcare services to meet the needs of this population and ensure accessible high-quality patient-centred care. This protocol reports the methodology of a study des...
Article
Full-text available
Background: It is commonly recommended that microbiological assessment should accompany the use of antibiotics prone to resistance. We sought to estimate the rate of microbiology testing and compare this to dispensing of the World Health Organization classified "watch" group antibiotics in primary care. Methods: Data from a cohort of older adult...
Article
Full-text available
Introduction An increased metabolic demand during pregnancy is fulfilled by gaining sufficient gestational weight. Women who gain inadequate-weight are at a high-risk of premature birth or having a baby with low-birth weight. However, women who gain excessive-weight are at a high-risk of having a baby with macrosomia. The aim of this review was to...
Article
Objective: This study aims to present overall survival rates to hospital discharge for out-of-hospital cardiac arrest (OHCA) in Tasmania and to identify predictors of survival. Methods: A retrospective observational cohort study was undertaken from 1 January 2010 to 31 December 2014. A probabilistically linked data set was created from paramedic...
Article
Full-text available
Background: The Action to Control Cardiovascular Risk in Diabetes (ACCORD)-Lipid study found no evidence of a beneficial effect of statin-fibrate combined treatment, compared to statins alone, on cardiovascular outcomes and mortality in type 2 diabetes mellitus after 5 years of active treatment. However, a beneficial reduction in major CVD events...
Article
Full-text available
Objective: The purpose of this study was to examine the timing of introduction of complementary (solid) foods among infants in South Western Sydney, Australia, and describe the maternal and infant characteristics associated with very early introduction of solids. Methods: Mother-infant dyads (n = 1035) were recruited into the "Healthy Smiles Hea...
Article
Full-text available
In the absence of reliable data on the burden of hepatitis E virus (HEV) in high endemic countries, we established a hospital-based acute jaundice surveillance program in six tertiary hospitals in Bangladesh to estimate the burden of HEV infection among hospitalized acute jaundice patients aged ≥14 years, identify seasonal and geographic patterns i...
Article
Full-text available
Early introduction of complementary foods can have a detrimental impact on children’s long-term health. This study examined the timing and determinants of early introduction of core and discretionary foods among infants in Sydney, Australia. Mothers (n = 1035) from an ongoing population-based birth cohort study were interviewed at 8, 17, 34 and 52...
Article
Full-text available
Obesity and dental caries in children are significant health problems. The aims of this review are to identify whether children aged 6 years and younger with overweight and/or obesity have higher dental caries experience compared with children with normal weight and, secondly, to identify the common risk factors associated with both conditions. Med...
Article
Full-text available
Cambodia's healthcare system has seen significant improvements in the last two decades. Despite this, access to quality care remains problematic, particularly for poor rural Cambodians. The government has committed to universal health coverage (UHC) and is reforming the health financing system to align with this goal. The extent to which the reform...
Article
Background Incorrect use of child restraints is a long-standing problem that increases the risk of injury in crashes. We used user-centred design to develop prototype child restraint instructional materials. The objective of this study was to evaluate these materials in terms of comprehension and errors in the use of child restraints. The relations...
Article
Full-text available
Background: Widespread use of antibiotics has led to the development of antibiotic resistance. However, there are limited data describing antibiotic use in the community setting, and examining factors associated with greater use. Our study aimed to quantify antibiotic dispensing in older adults in the community according to socio-demographics and...
Article
Background: Despite recommendations that older adults receive acellular pertussis vaccines, data on direct effectiveness in adults aged over 50 years are sparse. Methods: Case-control study nested within an adult cohort. Cases were identified from linked pertussis notifications and each matched to three controls on age, sex and cohort recruitmen...
Article
Full-text available
Objective: The objectives of this review are to examine whether overweight/obese children experience more dental caries compared with non-overweight/non-obese children, and to identify common risk factors associated with both conditions. Introduction: Systematic reviews have shown that any evidence on a link between overweight and/or obesity and...
Article
Full-text available
Background: Shared decision-making (SDM) has been found to be significantly and positively associated with improved patient outcomes. For an SDM process to occur, patients require functional, communicative, and critical health literacy (HL) skills. Objective: This study aimed to evaluate the impact of a program to improve health literacy skills for...
Article
Full-text available
Background: Adult education targeting health literacy (HL) may bring added value in the form of improved health. Objective: This study evaluated the effects of a HL program as part of an adult education curriculum for adults with low literacy and numeracy. Methods: This was a partial-cluster randomized controlled trial among 308 adults enrolled in...
Preprint
Full-text available
In the absence of reliable data on the burden of hepatitis E virus (HEV) in high endemic countries, we established a hospital-based acute jaundice surveillance program in six tertiary hospitals in Bangladesh to estimate the burden of HEV infection among hospitalized acute jaundice patients aged ≥14 years, identify seasonal and geographic patterns i...
Article
Full-text available
Background: Chronic suppurative otitis media (CSOM) causes preventable deafness and disproportionately affects children living in poverty. Our hypothesis was that health promotion in women's groups would increase their knowledge, attitudes and practices (KAP) regarding ear disease and reduce the prevalence of CSOM in their children. Methods: We...
Article
Full-text available
Objectives The CareTrack study found that a wide range of appropriateness of care (ie, care in line with evidence-based or consensus-based guidelines) was delivered across many health conditions in Australia. This study therefore aimed to demonstrate the feasibility of using the CareTrack method (a retrospective onsite record review) to measure the...
Article
Full-text available
Objectives To quantify the risk of overdiagnosis associated with prostate cancer screening in Australia using a novel lifetime risk approach. Design Modelling and validation of the lifetime risk method using publicly available population data. Setting Opportunistic screening for prostate cancer in the Australian population. Participants Australi...
Article
Objective Programmes that reduce the time to defibrillation are likely to improve overall survival rates from out‐of‐hospital cardiac arrests (OHCAs). This research sought to identify human factors common among community responders taking an automated external defibrillator (AED) to a victim of an OHCA that are either barriers or enablers of desire...