The Predictors Of Knee Cartilage Loss: A 5 Year Natural History Study Based On An Existing Cohort
Funder
National Health and Medical Research Council
Funding Amount
$76,380.00
Summary
Osteoarthritis (OA) is the single biggest cause of disability in Western society. Despite this, relatively little is known about the factors that effect disease progression. This will be the first extended follow up study of cartilage volume in people with early OA. This study will build on our existing work where we have developed a cohort study of adults with early knee OA. These people were initially recruited in 1997-8. An extensive data base of potential risk factors for OA has been collect ....Osteoarthritis (OA) is the single biggest cause of disability in Western society. Despite this, relatively little is known about the factors that effect disease progression. This will be the first extended follow up study of cartilage volume in people with early OA. This study will build on our existing work where we have developed a cohort study of adults with early knee OA. These people were initially recruited in 1997-8. An extensive data base of potential risk factors for OA has been collected and both X-rays of the knee and MRI have been performed at baseline and 2 years. Extending the follow up from 2 to 5 years will allow not only more precise estimation of rates of cartilage loss and assessment of risk factors, but also enable assessment of the assumption of linearity of cartilage volume loss. It will also be possible to partition the observed variability in rates of loss into true between-subject variability and within subject residual variability. This partitioning will provide valuable information for the design of future studies in OA, similar to the establishment of statistical design principles for patterns of loss in bone mineral density.Read moreRead less
Chronic Gastrointestinal Symptoms And Diabetes Mellitus: Risk Factors And Mechanisms
Funder
National Health and Medical Research Council
Funding Amount
$271,527.00
Summary
Why many people with diabetes mellitus are afflicted by gastrointestinal (GI) symptoms remains uncertain. Irreversible damage to the nerves controlling the gut (autonomic neuropathy) is often considered to be important. An alternative cause of increased GI symptomatology in diabetics is poor glucose control. Some studies have shown that acute shifts in glucose levels induce changes in the gut relevant to the onset of GI symptoms. For example, high glucose levels acutely cause slower stomach empt ....Why many people with diabetes mellitus are afflicted by gastrointestinal (GI) symptoms remains uncertain. Irreversible damage to the nerves controlling the gut (autonomic neuropathy) is often considered to be important. An alternative cause of increased GI symptomatology in diabetics is poor glucose control. Some studies have shown that acute shifts in glucose levels induce changes in the gut relevant to the onset of GI symptoms. For example, high glucose levels acutely cause slower stomach emptying times, leading to feelings of fullness. Though the effects of chronic glucose levels are yet to be properly explored, population data show that poor control in the long-term is related to an increase in symptoms. The aim of this prospective study is to determine the roles played by both autonomic neuropathy and glucose control in the development of GI symptoms among diabetics. All past research has been cross-sectional, and so cannot tell us if one or both of these factors cause GI problems in diabetes. For example, it is possible that autonomic neuropathy causes an increase in GI symptoms such as nausea and fullness, which in turn induces poor glucose control though lack of appetite or inadequate stomach emptying. Upon study inclusion, all study participants will undergo a series of autonomic tests. At 3 month intervals for a period of 30 months, they will be asked to complete a 2-week diary card detailing their GI symptoms and glucose readings, and also supply blood and urine samples for analysis twice each year. Two years from the study outset, participants will again complete the autonomic test series. Psychiatric co-morbidity will be investigated using the Composite Diagnostic Interview (CIDI-Auto) at the autonomic testing time points. The study will be undertaken at the Gastroenterology Research Unit at Nepean Hospital, in collaboration with the Royal Adelaide Hospital, centres with proven track records in diabetes investigation.Read moreRead less
Case-control Studies Of Completed And Attempted Suicide In Young People In NSW
Funder
National Health and Medical Research Council
Funding Amount
$819,000.00
Summary
Youth suicide rates have been increasing dramatically over the last three to four decades. The causes and determinants of these suicide rate changes remain unclear, as do the causes and determinants of the suicides themselves. Despite a range of risk factors being identified by researchers, predicting an individual suicide is difficult due to the range of factors involved and the complex interactions between them. This study will investigate associations between individual and environmental fact ....Youth suicide rates have been increasing dramatically over the last three to four decades. The causes and determinants of these suicide rate changes remain unclear, as do the causes and determinants of the suicides themselves. Despite a range of risk factors being identified by researchers, predicting an individual suicide is difficult due to the range of factors involved and the complex interactions between them. This study will investigate associations between individual and environmental factors for both completed suicides and suicide attempts in young people aged 18-34 years living in NSW. The study will be undertaken in Sydney, Newcastle and in identified rural areas. The study is embedded in existing treatment, counselling and support services and will aid their improvement and augmentation. Cases of suicide and attempted suicide will be compared with community controls, and also completed suicides with attempted suicides, to identify potentially modifiable risk factors associated with suicidal behaviour. This will provide more comprehensive information relating to how various risk factors interact and influence suicidal behaviour, including in rural areas with significant Aboriginal and Torres Strait Islander communities. Information from this study will improve prevention initiatives and assist with community strategic development and provide evidence to enhance current health service and coronial interventions.Read moreRead less
Australian Vietnam Veterans Health Study: Cohort Wave 2
Funder
National Health and Medical Research Council
Funding Amount
$575,250.00
Summary
Military records show that Australia has committed troops to war since the time of the Boer War, continuing commitments through World Wars I and II, the Korean War, the Malaya Emergency, the Vietnam Conflict, the Gulf War, and numerous peacekeeping operations across the world, yet there has never been an epidemiological cohort study that tracked the path of their health and their lives after their return. This study will provide an approximate 10-year followup of an established cohort of Austral ....Military records show that Australia has committed troops to war since the time of the Boer War, continuing commitments through World Wars I and II, the Korean War, the Malaya Emergency, the Vietnam Conflict, the Gulf War, and numerous peacekeeping operations across the world, yet there has never been an epidemiological cohort study that tracked the path of their health and their lives after their return. This study will provide an approximate 10-year followup of an established cohort of Australian Vietnam veterans, which was the first such study ever conducted of returned Australian servicemen. It will test diagnostic stability and chart the trajectory of health and welfare over time in the men and relate this to possible causal determinants including military service, combat deployment and trauma exposure, post traumatic stress disorder and alcohol disorders. It will also allow us to examine the role of their previous health state, determined 10 years ago, in relation to their current health state. Data and methodology from the Australian Bureau of Statistics national surveys on physical and mental health will be incorporated so that comparisons can be made with Australian population data for the study group. Significantly, wave 1 preceded automatic compensation for veterans for cancer and PTSD; provoked the DVA's national survey that led to a $32M government program response; fed into the DVA mental health policy; fed into the Army selection guidelines for overseas service via the Psychology Corps; fed into DVA policy re Vietnam Veterans Counselling Service. Wave 2 will continue this informative process as the cohort ages. This study will provide a firmer basis for treatment of war veterans and others whose lives are visited by trauma, physical ill-health, alcohol disorders, or mental health problems in adulthood.Read moreRead less