Adaptations Of Methods For Estimation Of Familial Correlation In Age At Onset Of Disease
Funder
National Health and Medical Research Council
Funding Amount
$146,250.00
Summary
Chronic diseases such as coronary heart disease, breast cancer, prostate cancer and non-insulin dependent diabetes are responsible for a significant burden of ill-health in society. Studies of familial aggregation are important in determining the relative magnitude of genetic and lifestyle-environment factors associated with chronic diseases, and in identifying individuals and families at high risk, even in the absence of conventional risk factors. The findings have implications for health promo ....Chronic diseases such as coronary heart disease, breast cancer, prostate cancer and non-insulin dependent diabetes are responsible for a significant burden of ill-health in society. Studies of familial aggregation are important in determining the relative magnitude of genetic and lifestyle-environment factors associated with chronic diseases, and in identifying individuals and families at high risk, even in the absence of conventional risk factors. The findings have implications for health promotion in the general population and disease prevention in those identified to be at high risk. An outstanding characteristics of these studies is that many participants had an event at some unknown time before the entry. This project aims at adapting current methods to properly account for events before entry and to provide estimates of familial aggregation between parents, between children and between parents and children in the same model. Furthermore, it provides freely available software for proper familial analyses which have not had any feasible numerical methods (or software). In addition, it provides estimates of familial aggregation of coronary heart disease in Busselton families which has longer follow-up than most other studies. This project is very cost effective as the Busselton Health Study consists of a series of cross-sectional surveys since 1968 and currently has hospital morbidity and death follow-up from medical record linkage until the end of 1997.Read moreRead less
Risk Factors For Chronic Respiratory Diseases In Middle Age: 36-year Follow-up Of The Tasmanian Asthma Study
Funder
National Health and Medical Research Council
Funding Amount
$358,750.00
Summary
This project will improve our understanding of the causes of chronic respiratory diseases (CRDs) in adults. CRDs are clearly a major public health problem, but there are no good data on the natural history and risk factors for these diseases. Regular follow-up through childhood to adulthood is the best method to examine these factors, but such data is lacking due to difficulties in conducting long-term studies. The Tasmanian Asthma Study (TAS), based on 8,585 Tasmanians (i.e. probands) born in 1 ....This project will improve our understanding of the causes of chronic respiratory diseases (CRDs) in adults. CRDs are clearly a major public health problem, but there are no good data on the natural history and risk factors for these diseases. Regular follow-up through childhood to adulthood is the best method to examine these factors, but such data is lacking due to difficulties in conducting long-term studies. The Tasmanian Asthma Study (TAS), based on 8,585 Tasmanians (i.e. probands) born in 1961, is one of the worlds most important resources of such information. The probands, their parents (16,267) and siblings (21,044) were first investigated for respiratory problems in 1968. Subsequently, three follow-up surveys were carried out at ages 13 (1974), 20 (1981) and 31 (1992) on either the total or sub-samples of the probands. In 1992, the children and spouses of the probands were also surveyed. Information on all respiratory problems was collected in all the follow-ups, although the main focus of the TAS to date has been asthma. The probands are now reaching the age at which all CRD as a group are beginning to inflict an increasing disease burden, which will become greater in the next two decades. Hence, TAS now provides an ideal opportunity to examine the potential risk factors and natural history of and of CRDs using data collected to date and new data collected at age 43. Also, it will provide a platform for future studies to investigate the progression of CRDs in this cohort. Hence, we propose to carry out the 36 year follow-up of this cohort focusing on CRDs. This will provide important information for preventing chronic respiratory morbidity and disability in the future, which will be original and significant not only in Australia but also internationally.Read moreRead less
Nutritional And Genetic Factors Associated With Genome Damage In Children
Funder
National Health and Medical Research Council
Funding Amount
$715,131.00
Summary
This project will investigate the link between children's diet and damage to their DNA. Damage to DNA is known to accumulate throughout life, and to be associated with risk of cancer and other diseases in adulthood. If we can show that poor diet in childhood increases DNA damage in childhood, it suggests that poor diet early in life may also increase risk of cancer and other diseases in adulthood. This will underpin important, salient health promotion messages we can provide to parents.
A Case-cohort Study Of New Risk Factors For Cardiovascular Diseases In Busselton
Funder
National Health and Medical Research Council
Funding Amount
$197,349.00
Summary
Cardiovascular diseases account for about half of all deaths and for considerable use of health care resources. While several risk factors for cardiovascular disease, such as smoking, high blood pressure, high cholesterol, overweight and diabetes, are well-established, these do not fully explain all cardiovascular disease. In recent years, some new potential risk factors for cardiovascular disease have been identified. This study aims to examine these new risk factors in an Australian population ....Cardiovascular diseases account for about half of all deaths and for considerable use of health care resources. While several risk factors for cardiovascular disease, such as smoking, high blood pressure, high cholesterol, overweight and diabetes, are well-established, these do not fully explain all cardiovascular disease. In recent years, some new potential risk factors for cardiovascular disease have been identified. This study aims to examine these new risk factors in an Australian population. Using information collected by the Busselton Health Surveys over the last 20 years, we aim to determine whether people who had these risk factors in 1978 were more likely to develop cardiovascular disease over the following years. Since all the information needed has already been collected in the course of earlier health surveys, this study will be particularly cost-effective. We expect that results from this study will increase our understanding of the causes of cardiovascular disease, and may suggest some simple tests to help identify those people who may be at higher risk of heart disease and most likely to benefit from intervention.Read moreRead less
Inter-relationships Between Life-stage Transitions, Depression And Cardio-metabolic Health In Young Adults
Funder
National Health and Medical Research Council
Funding Amount
$360,325.00
Summary
This study will investigate how social transitions and depression in young Australian adults affect the development of obesity and the adoption or persistence of behaviours that are associated with the risk of heart disease and diabetes. These behaviours include smoking, poor diet, physical inactivity and alcohol consumption. A better understanding of how psychosocial factors influence risk factors for heart disease and diabetes is needed to improve prevention strategies.
This study will follow up over 12,000 men aged 65-83 years who have previously completed a questionnaire about their medical, social, family and occupational history and lifestyle and have undergone a simple physical examination (height, weight, waist, girth at the hips and blood pressure). The first aim is to determine which of these factors predicts serious ill-health from heart disease, stroke and certain cancers in old age. In addition, we will test the hypothesis that risk factors for heart ....This study will follow up over 12,000 men aged 65-83 years who have previously completed a questionnaire about their medical, social, family and occupational history and lifestyle and have undergone a simple physical examination (height, weight, waist, girth at the hips and blood pressure). The first aim is to determine which of these factors predicts serious ill-health from heart disease, stroke and certain cancers in old age. In addition, we will test the hypothesis that risk factors for heart disease also predict the development of dementia because it seems that part of dementia in some patients is explained by their having suffered multiple small strokes. Finally, we will examine the relationship between development of dementia and previous major surgery as there is growing evidence that major surgical operations in older patients can be followed by confusion and impairment of thinking that may never recover fully. The overall aim is to discover preventable factors for several of the leading causes of ill-health in old age.Read moreRead less
Collaborative Overview Of Cohort Studies Of Cardiovascular Diseases In The Asia Pacific Region
Funder
National Health and Medical Research Council
Funding Amount
$230,388.00
Summary
Throughout Asia and the Pacific, cardiovascular diseases are now a leading cause of death and disability. However, most information about the causes of these diseases comes from studies conducted in North America and Europe, and there are few data available from the Asia Pacific region. Because patterns of cardiovascular diseases and levels of risk factors are very different in the West and East, it is possible that important differences exist in the relative contribution of different factors to ....Throughout Asia and the Pacific, cardiovascular diseases are now a leading cause of death and disability. However, most information about the causes of these diseases comes from studies conducted in North America and Europe, and there are few data available from the Asia Pacific region. Because patterns of cardiovascular diseases and levels of risk factors are very different in the West and East, it is possible that important differences exist in the relative contribution of different factors to disease occurrence in different regions. For example, an earlier project, from which the current study evolved, demonstrated that the association of blood pressure with stroke was about two times steeper in China and Japan than in the West. The present project has been initiated to further investigate the causes of common cardiovascular diseases in populations of the Asia Pacific region. It will involve more than 40 studies conducted in at least 9 countries from the region. These studies include more than 500,000 individuals followed for an average of 8-9 years. Data from 30 studies involving 450,000 individuals has already been provided to the applicants. Analyses will be conducted to provide region-, age-and sex-specific estimates of the effects various risk factors on several types of cardiovascular diseases. The risk factors of interest include: blood pressure, total cholesterol and its subfractions, triglycerides, diabetes, obesity, alcohol consumption, occupation and education. In addition to providing more precise estimates of the effects of established risk factors such as blood pressure, this project will, provide new data on several other risk factors not well investigated in this region. The results should be of importance in determining priorities for cardiovascular disease prevention. They should also be of relevance for predicting changes in the extent of the cardiovascular disease epidemics facing countries in the region.Read moreRead less