Background General practice’s population health and public health role is being promoted internationally to improve health outcomes. 1-6 This Thesis aims to: • Describe and evaluate projects which are relevant to exploring the interface of population health and public health with Australian rural general practice; and • Describe and evaluate projects which can increase population health and public health expertise and capacity amongst our future rural general practice workforce. Methods This Thesis uses a descriptive design. A series of research papers published in the peer reviewed literature are presented in each chapter. These papers are used as case studies to explore the aims of this Thesis. A variety of quantitative and qualitative methods have been used to conduct research in remote communities of the Northern Territory, rural South Australia and New South Wales from 1992 to 2005. Results Public health and population health can interface with Australian rural general practice in sustainable models described in case studies within this Thesis. There is a continuum of roles in this interface from population health in practice, public health, ‘new’ public health and leadership. Population health activities include screening and promotion of lifestyle factors to patients.7 Public health activities can be developed to extend the reach of health programs to the broader community. This may include participation in population based surveillance systems and health promotion projects. Promoters of ‘new’ public health 8,9 support an expansion of public health’s scope to include advocating social development through community participation and empowerment. Leadership can extend to policy development and liaison with general practice, population health and public health practitioners to promote collaborative models of health care. A sustainable model of increasing rural workforce recruitment via developing workforce capacity in public health and population health has been developed and evaluated as part of this Thesis. Conclusions This Thesis presents rural Australian case studies demonstrating integration of population health and public health roles with general practice. Vertically integrated workforce models have been developed, as part of this Thesis, which can facilitate recruitment to the rural health workforce. In the long term, educational models have been developed and evaluated as part of this Thesis. These models can increase the population health and public health expertise and capacity of this workforce. / MD Doctorate

Background: Symptomatic heart failure is a chronic and disabling condition that affects over 350 000 Canadians and is characterized by inevitable progression. Historically, research on the ways to increase survival has focused on biomedical factors. However, the continued poor prognosis of heart failure has prompted the search for other ways to improve the lives of these patients. Research in other chronic conditions demonstrates that social circumstances, described collectively as individual social interactions (e.g. social support, social participation) and community social factors (e.g. social capital, social norms), can influence health outcomes. Purpose: The purpose of this research was to describe and assess the impact of selected social circumstances potentially related to heart failure outcomes. Methods: Two literature reviews and one empirical study were performed. Conceptual models were proposed to describe the hypothesized pathways between selected social circumstances and heart failure outcomes. The first review was a systematic review of quantitative studies evaluating the relationship between social support and both rehospitalization and death. The review included a critical analysis of the methods employed by previous studies. The second review integrated the qualitative and quantitative literature describing the relationship between individual social interactions (including support, roles and participation) and the quality of life of patients or experience of living with heart failure. A narrative summary was provided and an integration of findings from both qualitative and quantitative study designs was performed. In the empirical study, patients‘ demographic and clinical information was examined simultaneously with selected community factors in a multilevel analysis. Outcomes of interest included rehospitalization or death of heart failure patients. Results: The systematic review shows that previous quantitative research has linked social support to reduced rehospitalization, but there is little evidence to link it with prolonged survival. The critique of the methods describes an inadequate conceptualization and inconsistent measurement of social support. A conceptual model showing how social support can influence rehospitalization is proposed. The integrative review presents qualitative research that identified the following social interactions as important components of the heart failure experience: social support, social participation and role fulfillment. However, no quantitative relationship between social support and quality of life was found. The potential reasons for the discrepant findings between the qualitative and quantitative studies include: the focus on social support as the only component of social interactions assessed in the quantitative literature; and the inconsistent measurement of social support. A conceptual model is presented to describe the multiple components of social interactions and the theoretical basis for their effects. The multilevel analysis demonstrates that individual factors exerted the strongest effect on heart failure outcomes in most models. Community characteristics had little influence on rehospitalization or death. Study design and analysis issues are proposed to explain these findings. Conclusion: The literature reviews and the empirical study provide a contribution to the population health literature, offering a broad approach to assessing the determinants of disease progression in heart failure patients. This thesis research advances the discussion about which social circumstances may influence heart failure outcomes and their pathways. The use of the proposed conceptual models in future research will help clarify the role of social circumstances in the prognosis of heart failure.

Background: Symptomatic heart failure is a chronic and disabling condition that affects over 350 000 Canadians and is characterized by inevitable progression. Historically, research on the ways to increase survival has focused on biomedical factors. However, the continued poor prognosis of heart failure has prompted the search for other ways to improve the lives of these patients. Research in other chronic conditions demonstrates that social circumstances, described collectively as individual social interactions (e.g. social support, social participation) and community social factors (e.g. social capital, social norms), can influence health outcomes. Purpose: The purpose of this research was to describe and assess the impact of selected social circumstances potentially related to heart failure outcomes. Methods: Two literature reviews and one empirical study were performed. Conceptual models were proposed to describe the hypothesized pathways between selected social circumstances and heart failure outcomes. The first review was a systematic review of quantitative studies evaluating the relationship between social support and both rehospitalization and death. The review included a critical analysis of the methods employed by previous studies. The second review integrated the qualitative and quantitative literature describing the relationship between individual social interactions (including support, roles and participation) and the quality of life of patients or experience of living with heart failure. A narrative summary was provided and an integration of findings from both qualitative and quantitative study designs was performed. In the empirical study, patients‘ demographic and clinical information was examined simultaneously with selected community factors in a multilevel analysis. Outcomes of interest included rehospitalization or death of heart failure patients. Results: The systematic review shows that previous quantitative research has linked social support to reduced rehospitalization, but there is little evidence to link it with prolonged survival. The critique of the methods describes an inadequate conceptualization and inconsistent measurement of social support. A conceptual model showing how social support can influence rehospitalization is proposed. The integrative review presents qualitative research that identified the following social interactions as important components of the heart failure experience: social support, social participation and role fulfillment. However, no quantitative relationship between social support and quality of life was found. The potential reasons for the discrepant findings between the qualitative and quantitative studies include: the focus on social support as the only component of social interactions assessed in the quantitative literature; and the inconsistent measurement of social support. A conceptual model is presented to describe the multiple components of social interactions and the theoretical basis for their effects. The multilevel analysis demonstrates that individual factors exerted the strongest effect on heart failure outcomes in most models. Community characteristics had little influence on rehospitalization or death. Study design and analysis issues are proposed to explain these findings. Conclusion: The literature reviews and the empirical study provide a contribution to the population health literature, offering a broad approach to assessing the determinants of disease progression in heart failure patients. This thesis research advances the discussion about which social circumstances may influence heart failure outcomes and their pathways. The use of the proposed conceptual models in future research will help clarify the role of social circumstances in the prognosis of heart failure.

Abstract Background: Many studies have demonstrated that health is a function of relative and not absolute income within populations. Canadian studies are not conclusive. There is a need for further investigation of the ‘relative income’ hypothesis in the Canadian population. Objectives: The primary objective of this research was to test the “relative income” hypothesis across Canadian health regions. The second objective was to extend the first hypothesis to consider rural versus urban populations in Canada. Methods: This research involved ecological analyses. The source of the data was the Canadian Community Health Survey, CCHS 2005 cycle 3.1. The units of analysis were health regions of Canada. Health of a region was estimated as the percentage of people who rated their health as good or excellent. The primary exposure variable was the ratio of people whose personal income was less than $15,000 relative to those reporting more than $80,000. Correlation analyses and multiple linear regressions were performed to ascertain the relationship between income inequality and health status in populations, adjusting for important covariates. Results: The measure of relative income inequality alone appeared to explain 18 per cent of the variability in the measure of health status in populations. However, after adding the measure of absolute income to the model, although 29 per cent of the variability was explained, the independent contribution of the inequality measure became non-significant. Linear regression models suggested that the absolute income variable alone could explain 30 per cent of the variance in the health status of populations. Other variables with a statistically significant contribution to the final multiple regression model were education and alcohol consumption. Rural/urban status did not change the individual relationship between relative income inequality or absolute income and the measure of health status in populations. Conclusion: Across Canadian health regions, health status in populations was a function of absolute income but not relative income. Regions with higher levels of education had better levels of self-rated health. A larger percentage of heavy drinkers was also correlated with lower population health status. The study findings have implications for public health, economic policies, and social policies. / Thesis (Master, Community Health & Epidemiology) -- Queen's University, 2008-09-17 15:32:27.341

Background: Compared to the general population, individuals with intellectual disabilities have a higher prevalence of health problems, including psychiatric and/or behavioural conditions (dual diagnosis). Research suggests that the proportion of persons with intellectual disabilities who have a dual diagnosis ranges from 14% to 64% depending on the population studied and the diagnostic criteria used. However, there is little population-based information in Canada about people with such a dual diagnosis. Objectives: The aims of this study were to estimate the prevalence of psychiatric or behavioural conditions among adults with an intellectual disability in Canada, and to estimate the use of mental health services among these individuals. Methods: This study was a secondary analysis of two cross-sectional, population-based surveys (2005 Canadian Community Health Survey: CCHS and 2006 Participation and Activity Limitation Survey: PALS), and the 2008/09 Survey of Adults with Intellectual Disabilities in South Eastern Ontario: SAID-SEO. Relevant variables were identified in the surveys to answer the study objectives. Confidence intervals were provided for all estimates and the results were compared within subgroups for each survey, as well as between surveys. Results: The proportion of Canadian adults with an intellectual disability is 0.2% according to the CCHS and 0.5% according to the PALS. The proportion of individuals with a dual diagnosis was found to be 31% in the CCHS, 44% in the PALS, and 33% in the SAID-SEO. These prevalence estimates fall within the ranges reported in the literature. Lastly, the majority of adults with a dual diagnosis reported using health services in the past year. Conclusion: According to the three surveys examined (CCHS, PALS, SAID-SEO), psychiatric and behavioural conditions are present in about a third of the individuals with intellectual disabilities, which is in accordance with published literature. However, the estimates of the prevalence of intellectual disabilities in the CCHS and PALS were considerably lower when compared to the literature. Among the surveys, the PALS presented the highest quality of data regarding the population with a dual diagnosis. The surveys found that a majority of individuals with a dual diagnosis access some form of health services at least once a year. / Thesis (Master, Community Health & Epidemiology) -- Queen's University, 2009-10-28 00:15:54.488

Background: Street connectivity, an important aspect of the built environment, refers to the directness of links and the density of connections in road networks. Street connectivity of youth’s neighborhoods may impact upon both physical activity patterns and the occurrence of physical activity injuries in street locations. Objectives: The objectives of the two studies comprising this thesis were to examine, among Canadian youth in grades 6 to 10: (1) the relationship between street connectivity and physical activity, and (2) the relationship between street connectivity and physical activity injuries occurring in the street. Methods: 9,717 youth in grades 6-10 from 188 schools across Canada participated in the 2006 Health Behaviour in School-aged Children (HBSC) survey. A street connectivity composite measure was gathered objectively using a geographic information system database, and was based on intersection density, average block length, and connected node ratio in a 5km radius around each school. Physical activity was measured via students’ self-reported hours of moderate-to-vigorous physical activity per week outside of school hours. Injury was measured via students’ self-reports to questions regarding whether they had suffered an injury while playing in the street in the past 12 months. Multi-level regression analyses were used to examine the relations between street connectivity and both physical activity and injury. Results: Compared to students living in the highest street connectivity quartile, those in the second (Relative Risk (RR) 1.22; 95% confidence interval (CI) 1.10-1.35), third (RR 1.25; 95% CI 1.13-1.37), and fourth (lowest; RR 1.21; 95% CI 1.09-1.34) quartiles reported considerably higher levels of physical activity outside of school hours. Conversely, students living in neighbourhoods with low street connectivity reported higher occurrence of physical activity injuries occurring in the street relative to students living in highly connected neighbourhoods (Odds Ratio (OR) 1.47; 95% CI 0.94 -2.31). Conclusions: Neighbourhoods with low street connectivity may be conducive to youth physical activity, yet they may also result in an increased risk of injury. Further, the relationship between street connectivity and physical activity reported in Canadian youth is not consistent with the relationship reported for adult populations. This variation requires consideration in applied health policy. / Thesis (Master, Community Health & Epidemiology) -- Queen's University, 2010-09-14 15:26:49.565

Introduction: In the new century, worldwide health professionals face new pressures for changes towards more cost-effective and sustainable health care for all populations. Globalization creates daunting challenges as well as new opportunities for institutions and health professionals being more connected and rethink their strategies toward an interprofessional practice. Although Health professionals are paying increased attention to issues of global health, there are no current competency assessment tools appropriate for evaluating their competency in global health. This study aims to assess global health competencies of family medicine residents, nursing, physiotherapy and occupational therapy students in five universities across Ontario, Canada Methods: A total of 429 students participated in the Global Health Competency Survey, drawn from family medicine residency, nursing, physiotherapy and occupational therapy programs of five universities in Ontario, Canada. The surveys were evaluated for face and content validity and reliability. Results: Factor analysis was used to identify the main factors to be included in the reliability analysis. Content validity was supported with one floor effect in the “racial/ethnic disparities” variable (36.1%), and few ceiling effects. Seven of the twenty-two variables performed the best (between 34% and 59.6%). For the overall rating score, no participants had floor or ceiling effects. Five factors were identified which accounted for 95% of the variance. Cronbach’s alpha was >0.8 indicating that the survey items had good internal consistency and represent a homogeneous construct. The results of the survey demonstrated that self-reported knowledge confidence in global health issues and global health skills were low for family medicine residents, nursing, physiotherapy and occupational therapy’ students. The percentage of residents and students who self-reported themselves confident was less than 60% for all global health issues. Conclusion: The Global Health Competency Survey demonstrated good internal consistency and face and content validity. The new century requires professionals competent in global health. Improvements in the core competencies in global health can be a bridge to a more equal world. Institutions must offer interprofessional approaches and a curriculum that exposes them to a varied learning methods and opportunities to improve their knowledge and skills in global health.

Population health is concerned with analyzing the factors that determine the uneven distribution of health in a population and it also proposes interventions to narrow health inequalities. Kindig has proposed a population health management strategy that would engage the health and other sectors on population health improvement through a financial incentive linked to health outcomes. Proposed elements of a population health approach in health care at the patient encounter level include paying attention to health determinants for the patient and ensuring interprofessional collaboration; at the system level the approach includes developing and advocating for interventions that address health inequalities, such as delivering services to under-serviced areas and vulnerable populations. There has been virtually no research among frontline clinicians on the awareness and salience of a population health approach. In order to address this gap an exploratory study was conducted among family physicians in Primary Care Networks (PCNs) in Alberta, Canada. PCNs include capitation funding that is used to purchase services such as nursing, pharmacy and dietetics. The physicians were able to describe their patient populations in terms of a full range of social determinants and the health status inequalities they produce. They emphasized the importance of preventive screening and counseling in contributing to the health of their patients, and cited the key contributions of other team members to these activities, as well as the electronic medical record (EMR). They reported ambivalence toward the effectiveness of financial incentives for population health improvement, and while there was some collaboration with schools, inter-sectoral collaboration has yet to develop outside the health sector. This thesis has demonstrated the potential for primary care physicians to adopt a population health approach. However, there is a considerable distance to go in introducing an incentive approach for outcome-based population health management, as envisioned by Kindig.

Background: Symptomatic heart failure is a chronic and disabling condition that affects over 350 000 Canadians and is characterized by inevitable progression. Historically, research on the ways to increase survival has focused on biomedical factors. However, the continued poor prognosis of heart failure has prompted the search for other ways to improve the lives of these patients. Research in other chronic conditions demonstrates that social circumstances, described collectively as individual social interactions (e.g. social support, social participation) and community social factors (e.g. social capital, social norms), can influence health outcomes. Purpose: The purpose of this research was to describe and assess the impact of selected social circumstances potentially related to heart failure outcomes. Methods: Two literature reviews and one empirical study were performed. Conceptual models were proposed to describe the hypothesized pathways between selected social circumstances and heart failure outcomes. The first review was a systematic review of quantitative studies evaluating the relationship between social support and both rehospitalization and death. The review included a critical analysis of the methods employed by previous studies. The second review integrated the qualitative and quantitative literature describing the relationship between individual social interactions (including support, roles and participation) and the quality of life of patients or experience of living with heart failure. A narrative summary was provided and an integration of findings from both qualitative and quantitative study designs was performed. In the empirical study, patients‘ demographic and clinical information was examined simultaneously with selected community factors in a multilevel analysis. Outcomes of interest included rehospitalization or death of heart failure patients. Results: The systematic review shows that previous quantitative research has linked social support to reduced rehospitalization, but there is little evidence to link it with prolonged survival. The critique of the methods describes an inadequate conceptualization and inconsistent measurement of social support. A conceptual model showing how social support can influence rehospitalization is proposed. The integrative review presents qualitative research that identified the following social interactions as important components of the heart failure experience: social support, social participation and role fulfillment. However, no quantitative relationship between social support and quality of life was found. The potential reasons for the discrepant findings between the qualitative and quantitative studies include: the focus on social support as the only component of social interactions assessed in the quantitative literature; and the inconsistent measurement of social support. A conceptual model is presented to describe the multiple components of social interactions and the theoretical basis for their effects. The multilevel analysis demonstrates that individual factors exerted the strongest effect on heart failure outcomes in most models. Community characteristics had little influence on rehospitalization or death. Study design and analysis issues are proposed to explain these findings. Conclusion: The literature reviews and the empirical study provide a contribution to the population health literature, offering a broad approach to assessing the determinants of disease progression in heart failure patients. This thesis research advances the discussion about which social circumstances may influence heart failure outcomes and their pathways. The use of the proposed conceptual models in future research will help clarify the role of social circumstances in the prognosis of heart failure.

Background: Symptomatic heart failure is a chronic and disabling condition that affects over 350 000 Canadians and is characterized by inevitable progression. Historically, research on the ways to increase survival has focused on biomedical factors. However, the continued poor prognosis of heart failure has prompted the search for other ways to improve the lives of these patients. Research in other chronic conditions demonstrates that social circumstances, described collectively as individual social interactions (e.g. social support, social participation) and community social factors (e.g. social capital, social norms), can influence health outcomes. Purpose: The purpose of this research was to describe and assess the impact of selected social circumstances potentially related to heart failure outcomes. Methods: Two literature reviews and one empirical study were performed. Conceptual models were proposed to describe the hypothesized pathways between selected social circumstances and heart failure outcomes. The first review was a systematic review of quantitative studies evaluating the relationship between social support and both rehospitalization and death. The review included a critical analysis of the methods employed by previous studies. The second review integrated the qualitative and quantitative literature describing the relationship between individual social interactions (including support, roles and participation) and the quality of life of patients or experience of living with heart failure. A narrative summary was provided and an integration of findings from both qualitative and quantitative study designs was performed. In the empirical study, patients‘ demographic and clinical information was examined simultaneously with selected community factors in a multilevel analysis. Outcomes of interest included rehospitalization or death of heart failure patients. Results: The systematic review shows that previous quantitative research has linked social support to reduced rehospitalization, but there is little evidence to link it with prolonged survival. The critique of the methods describes an inadequate conceptualization and inconsistent measurement of social support. A conceptual model showing how social support can influence rehospitalization is proposed. The integrative review presents qualitative research that identified the following social interactions as important components of the heart failure experience: social support, social participation and role fulfillment. However, no quantitative relationship between social support and quality of life was found. The potential reasons for the discrepant findings between the qualitative and quantitative studies include: the focus on social support as the only component of social interactions assessed in the quantitative literature; and the inconsistent measurement of social support. A conceptual model is presented to describe the multiple components of social interactions and the theoretical basis for their effects. The multilevel analysis demonstrates that individual factors exerted the strongest effect on heart failure outcomes in most models. Community characteristics had little influence on rehospitalization or death. Study design and analysis issues are proposed to explain these findings. Conclusion: The literature reviews and the empirical study provide a contribution to the population health literature, offering a broad approach to assessing the determinants of disease progression in heart failure patients. This thesis research advances the discussion about which social circumstances may influence heart failure outcomes and their pathways. The use of the proposed conceptual models in future research will help clarify the role of social circumstances in the prognosis of heart failure.