Practical Tools For Robust Analysis Of Large Epidemiological Studies With Incomplete Data
Funder
National Health and Medical Research Council
Funding Amount
$358,492.00
Summary
Studies of the causes and consequences of health outcomes follow large cohorts of individuals for long time periods. A major challenge in analysing data from these studies is that information is often incomplete. Participants rarely complete all waves of data collection, or provide all requested information. Statistical research has led to increased use of a statistical method (multiple imputation) that recovers information from incomplete cases. This project will develop and improve this method
A Life Course Approach To Understanding Oral Health Inequalities
Funder
National Health and Medical Research Council
Funding Amount
$269,025.00
Summary
Preadolescent children in Australia have lower rates of dental decay than children in almost all other economically developed countries. This is not the case for Australian adults. In fact, Australian adults aged 35-44 years have higher rates of dental decay than adults of similar age in most other economically developed countries. Not only do Australian adults have comparatively poor oral health in the lead-up to midlife, but also socioeconomic inequalities in dental decay are more pronounced a ....Preadolescent children in Australia have lower rates of dental decay than children in almost all other economically developed countries. This is not the case for Australian adults. In fact, Australian adults aged 35-44 years have higher rates of dental decay than adults of similar age in most other economically developed countries. Not only do Australian adults have comparatively poor oral health in the lead-up to midlife, but also socioeconomic inequalities in dental decay are more pronounced at this stage of life than at any other stage before or after. This study proposes to look at how oral health in young adults in shaped by their experiences across childhood, adolescence and early adulthood. This approach is based on recent evidence that points to the importance to adult health of the early years of life. In this life course perspective, the poorer health of disadvantaged individuals is seen to result from ongoing and cumulative exposure to difficult and disadvantaged circumstances across their life course. This study will trace and follow up a cohort of almost 10, 000 South Australians for whom social, familial, economic and dental behavioural information was collected in 1991-92 when these individuals were aged from five to 15 years. Now aged from 19 to 29 years, these individuals will be invited to attend a dental examination and complete a survey that will provide information on health behaviours and life circumstances shown to be important determinants of general and oral health status. One purpose will be to explore reasons for the comparatively poorer oral health status of Australian adults. A second purpose will be to investigate the magnitude of socioeconomic inequalities in oral disease at different life stages. The findings will add to the knowledge of the etiology of oral disease and open up opportunities to develop new methods of oral health promotion based on the understanding of accumulated risk across the life course.Read moreRead less
Early School-Age Outcomes After Exposure To Repeat Prenatal Corticosteroids - A Randomised Controlled Trial
Funder
National Health and Medical Research Council
Funding Amount
$1,083,964.00
Summary
AIMS OF THE RESEARCH We have recently concluded a large clinical trial in Australia and New Zealand of repeat dose of antenatal corticosteroids given to women who were likely to deliver their baby too early (before 34 weeks of pregnancy). We have been able to show that repeat doses of corticosteroids before birth significantly reduces the risk of the baby developing respiratory difficulties after birth from 41.4% to 32.8%. However, we are not sure if this potentially important improvement will t ....AIMS OF THE RESEARCH We have recently concluded a large clinical trial in Australia and New Zealand of repeat dose of antenatal corticosteroids given to women who were likely to deliver their baby too early (before 34 weeks of pregnancy). We have been able to show that repeat doses of corticosteroids before birth significantly reduces the risk of the baby developing respiratory difficulties after birth from 41.4% to 32.8%. However, we are not sure if this potentially important improvement will translate into better outcomes for the children as they grow older and reach school-age. As there are many examples of treatments given around the time of birth that have been shown to have some short-term benefits, but substantial long-term harms, we must be as certain as we can be that any advance in one small area of health is not counterbalanced by disadvantages in other health areas. This is particularly important to find out for repeat antenatal corticosteroids given the earlier conflicting reports from non-randomised studies. We plan to assess the 1085 survivors from our earlier clinical trial of repeat dose of prenatal corticosteroids when they are of early school age. We will assess their movement and other important areas of their brain function, as well as their school progress, blood pressure, lung function and general health and growth. EXPECTED OUTCOMES OF THE RESEARCH If we find important improvements in health outcomes at school-age in children exposed to repeat corticosteroids, without any substantial couterbalancing adverse effects, repeat steroids will be recommended standard therapy in women who are likely to give birth to their baby very early. This will lead to a reduction in the burden of ill health.Read moreRead less
A Randomised Control Trial Of Non-specific Clinical Management Versus CBT In Chronic Anorexia Nervosa
Funder
National Health and Medical Research Council
Funding Amount
$555,843.00
Summary
Anorexia nervosa (AN) is a serious mental illness that usually starts in adolescence and often runs a chronic course. With an estimated prevalence rate between 0.5% and 3.7% of women, and up to 50% remaining chronically ill, the illness poses a disproportionate burden on health and social services. AN has inpatient costs alone that exceed that for schizophrenia. Chronic AN has the highest mortality rate of any mental illness. Chronic AN patients are known for their ambivalence about engaging in ....Anorexia nervosa (AN) is a serious mental illness that usually starts in adolescence and often runs a chronic course. With an estimated prevalence rate between 0.5% and 3.7% of women, and up to 50% remaining chronically ill, the illness poses a disproportionate burden on health and social services. AN has inpatient costs alone that exceed that for schizophrenia. Chronic AN has the highest mortality rate of any mental illness. Chronic AN patients are known for their ambivalence about engaging in treatment and poor motivation to change their eating disorder behaviours. They often fail to respond to traditional treatments and develop a history of negative treatment experiences and repeated treatment failures. A new approach is needed to reduce both the personal suffering and the burden of the illness on social and medical services. To date, there has been little scientific investigation into the development of specific treatment for those patients with chronic AN. This study will trial a recently manualised therapy - non-specific supportive clinical management - which initial evidence suggests may hold promise for chronic AN because it offers a more indirect, motivationally-matched approach. This treatment will be compared to the establishment therapy Cognitive Behavioural Therapy. Patients will be randomly allocated to one of the two treatment conditions and will receive 40 sessions over 12 months. They will be thoroughly assessed prior to during and after they have completed treatment and followed up for 6 months. This is the worlds first trial of a psychological treatment for chronic AN; it is hoped the study will establish an effective treatment for this debilitating and expensive illness. Further, as the project aims to explore the core, but often over-looked, feature of AN - poor motivation for recovery - it will also be in a position to shed light on the deep psychological processes that maintain this illness.Read moreRead less
Development Of A Health-related Quality Of Life Instrument For Children With Cerebral Palsy
Funder
National Health and Medical Research Council
Funding Amount
$114,000.00
Summary
This project aims to develop and test a measure of quality of life for children with cerebral palsy (CP). This is a new project of international significance that has been recommended as the highest research priority of the United Cerebral Palsy Association with the strong support of CP researchers and clinicians internationally. CP remains the most common cause of physical disability in childhood, with an incidence of 2-2.0-2.5 per 1,000 live births. Described as a 'non-progressive motor impair ....This project aims to develop and test a measure of quality of life for children with cerebral palsy (CP). This is a new project of international significance that has been recommended as the highest research priority of the United Cerebral Palsy Association with the strong support of CP researchers and clinicians internationally. CP remains the most common cause of physical disability in childhood, with an incidence of 2-2.0-2.5 per 1,000 live births. Described as a 'non-progressive motor impairment of central origin recognised in infancy or childhood', CP presents as a static lesion on the brain characterised by progressive muscoskeletal deformity. Its impact on children and families is profound, resulting in extensive and life-long burden of care for families, and significant limitations to children's development and wellbeing. The management of the neuromuscular sequelae and health problems is a considerable cost to the health system because children require frequent visits for medical management, surgical procedures and rehabilitation. Trials of CP management effectiveness are hampered by the absence of patient outcome measures. Whilst new treatment options aim to provide substantial improvements in impairment and functioning they have disadvantages. For example, spasticity management includes Botulinum toxin A and intrathecal baclofen, both may improve function but are costly and invasive; treatments for ambulation (multi-level orthopaedic surgery) offer improved gait and mobility but require extensive rehabilitation; treatments for severe eating difficulties and poor growth (gastrostomy) may improve survival but result in aggravation of gastro-oesophageal reflux; and surgery for intractable epilepsy may improve seizure disorder but result in functional deficits. Quality of life is now a mandatory component of clinical trial research; valid and reliable tools sensitive to detecting change are urgently required.Read moreRead less
This Study aims to answer the question: When is the best time for adults with kidney disease to start dialysis? This question is currently a subject of intense international debate. It has been suggested that patients who commence dialysis relatively early, when they still have a high level of remaining kidney function, have fewer complications, maintain a better level of function in the community and are less likely to die as a result of their kidney disease. However, this has not been determin ....This Study aims to answer the question: When is the best time for adults with kidney disease to start dialysis? This question is currently a subject of intense international debate. It has been suggested that patients who commence dialysis relatively early, when they still have a high level of remaining kidney function, have fewer complications, maintain a better level of function in the community and are less likely to die as a result of their kidney disease. However, this has not been determined in a rigorous scientific manner. In fact starting dialysis earlier may expose the person to the risks associated with the use of dialysis and may also impact on their quality of life. Many international kidney societies have formulated guidelines recommending that dialysis should be commenced early - when the remaining kidney function drops to a level of approximately 10-15% of normal kidney function. Recent practice in Australia and New Zealand has been to commence dialysis when the remaining kidney function is between 6 and 9% of normal. Hence, the adoption of these guidelines recommending an earlier dialysis start time will have a significant impact on health costs; therefore a net benefit to the patient and the community, needs to be demonstrated. To answer this important question, we have designed and instituted a multi-center trial, that was commenced in 2000. The trial has been scientifically designed (randomised controlled trial) to compare the effect of early start dialysis (remaining kidney function between 10-14%) versus late start dialysis (remaining kidney function between 5-7%) on survival, disease and dialysis complications and subsequent hospitalization. To date 748 of the required 800 patients have been entered into the trial and will be followed for a minimum of 3 years. We are confident the results of this trial will impact at a local, national and international level, delineating best practice management of dialysis in people with kidney failure.Read moreRead less