This study evaluates the roles of temperature variability and disease awareness in the emergence of Chagas disease (American trypanosomiasis). Chagas disease is endemic in Latin America and primarily spreads to humans directly via the triatomine vector. Hosts for most triatomine species are mainly rodents and occasionally dogs. The disease itself is caused by a parasitic protozoan, Trypanosoma cruzi (T. cruzi) which is found in the triatomine's feces and is often spread while the triatomine is consuming a blood meal. T. cruzi from feces enters the body via an abrasion on the skin, the mucous membranes, conjunctivae, or through consumption. To determine the risk of Chagas disease transmission one must define qualities that make the triatomine an effective disease vector as well as investigate the level of disease awareness among physicians and the population within the vector's range. This thesis maps triatomine species within the U.S. that harbor T. cruzi naturally and that exhibit qualities of domesticity. These qualities are defined by whether the species bites humans and dogs as well as reports that the species has been found in the domestic setting. Ranges illustrating temperature thresholds for increased triatomine activity for 2000 and 2030 are also depicted. Additionally, outcomes of a physician survey are presented to gauge the status of Chagas disease awareness in areas at higher risk for disease transmission. Results reveal limited consideration of Chagas disease in physician diagnosis despite the higher risk range which extends through the southern U.S. and is predicted to expand significantly by 2030. / Master of Science

This thesis examines several recent transformations in the United States health care system and their effects on the role of physicians. Technology, specialization, ancillary health care workers, for-profit hospitals and managed care corporations have all expanded throughout the health care industry. These changes have resulted in an increase in bureaucratic, capitalist and corporate influences over the system. As a result of the increasing costs of medical practice, the corporatization of health care is occurring in which physicians must not only rely on corporations for access to the capital that they need, but also relinquish some of their power to the corporations. McKinlay and Arches (1985) assert that these changes have led to the proletarianization of the physician. Health maintenance organizations (HMOs) and other forms of managed care companies continue to grow throughout the United States. Therefore, physicians, who have historically dominated the health care system, no longer have the autonomy that they once had. To measure physicians' attitudes toward these changes, The Managed Care in the New River Valley survey was conducted. The findings show that although managed care is not as strong as it is in other parts of the country, physicians still believe that their control of health care is declining. The importance of managed care companies and other third party influences will continue to increase in the future, as they further extend to areas such as the New River Valley. / Master of Science

Background: Family physicians are central care providers for older adults. Some family physicians have enhanced skills to care for this patient population, sometimes reflected in a focused medical practice and/or extra training. There are knowledge gaps concerning how to identify physicians with focused practice or added training within health administrative data, as well as understanding their contributions to quality primary care. Research Question: This thesis investigated: (1) What are appropriate and important performance measures of family physician services that are relevant to older adults? (2) How can family physicians with focused practice or added training be classified within population-based health administrative data, and what are their medical practice characteristics? (3) How do family physicians with/without focused practice or added competence compare in delivering high quality care to older patients? Methods: This thesis comprised a modified Delphi consensus study and two population-based observational studies. Expert panelists rated indicators and refined proposed technical definitions for endorsed indicators. Using health administrative data, family physicians with focused medical practices and/or added competence were classified, and their practice- and provider-level characteristics were described. A propensity score-matched cohort study enabled comparisons of family physicians on the consensus-based performance measures. Results: This thesis established consensus on 12 measurable processes across four priority topics relevant to added competency training. An approach to classify family physicians with focused practice or added training was developed, and practice differences were identified. Lastly, this work operationalized the technical definitions of performance measures and identified distinctions on four processes. Conclusion: This thesis provides novel data on the family physician workforce with focused medical practices and added competence to care for older adults. The studies demonstrated the feasibility of establishing measurable indicators using a modified Delphi procedure, and developed an approach to classify focused practice physicians and added competency holders within health administrative data. / Dissertation / Doctor of Philosophy (PhD) / Older adults frequently seek care from family doctors for a variety of health needs. Some family doctors focus their medical practice to increasingly care for older patients or undergo extra training to learn more about their needs. There is a research gap in understanding if added focus or training impacts the care that older adults receive. This thesis studied family doctors with focused medical practices and extra training to see how they compare with other family doctors. Experienced physicians and researchers were consulted to determine what primary care activities related to caring for older patients are most important and appropriate to measure. Findings showed some practice differences between family doctors who focus on older patients or have extra training, but the quality of care that older adults receive is similar. This research suggests that added focus and training might not lead to better quality of primary care for older patients.

Nous cherchions à explorer les compétences que les intervenants du service des urgences (SU), des médecins et des infirmières travaillant en équipe dans des rôles complémentaires, ont développées dans la divulgation d‘un décès, pour éclairer l‘apprentissage de cette compétence de « Communicateur ». Nous avons utilisé des entrevues semi-dirigées et un échantillonnage non probabiliste de 8 intervenants. Nous avons analysé les entrevues à l‘aide de méthodes qualitatives reconnues. Le nombre total de présences de nos intervenants à une divulgation est estimé supérieur à 2000. Notre analyse a démontré qu‘ils utilisent une structure de divulgation uniforme. Néanmoins, ils repoussaient l‘utilisation d‘un protocole, parce que jugé trop rigide. La flexibilité et l‘empathie se sont révélées des qualités essentielles pour les intervenants. Nous représentons la visite de la famille comme un épisode de désorganisation/dysfonction qui se résorbe partiellement durant le séjour au SU. Nous proposons un modèle pédagogique qui est basé sur nos résultats. / We explored the competencies that Emergency Department (ED) healthcare providers (HPs), physicians and nurses working as team members with complementary roles, have developed through notifications of death, to inform the teaching of this ‘Communicator‘ competency. We used semi-structured interviews on a non-probabilistic sample of 8 HPs. We analyzed the interviews using recognized qualitative methods. The total self-estimated number of death notifications attended by our HPs is superior to 2000. Analysis showed that experienced HPs use a uniform structure to death notification in ED. In spite of this, the use of a protocol for notification was considered inappropriate because it was deemed too rigid. Flexibility and empathy emerged as essential qualities for HPs. We submit that the family‘s ED visit is an episode of disorganization/dysfunction that gets partially resolved during their stay. Based on our results, we propose an educational model for teaching delivery of news of death in the ED.

Cette étude exploratoire a pour but d’identifier les facteurs pouvant influencer l’implantation des adjoints au médecin dans le système de santé québécois, selon les perceptions de médecins omnipraticiens et de médecins spécialistes. La collecte de données pour cette étude qualitative s’est effectuée à l’aide d’entrevues semi-structurées effectuées auprès de 13 omnipraticiens et spécialistes provenant d’hôpitaux de Montréal et de la clinique médicale des Forces canadiennes de St-Jean (Québec). L’étude a démontré que des obstacles perçus, tels que le corporatisme et le manque d’information sur la profession, pourraient interférer avec l’intégration des adjoints au médecin au Québec. Cependant, les participants s’entendent pour dire que ces obstacles ne seraient pas insurmontables et ont, par la même occasion, identifié de nombreux éléments pouvant faciliter cette intégration. Les adjoints au médecin ont des compétences uniques et travaillent déjà dans d’autres provinces canadiennes qui ont un réseau de santé similaire au nôtre. Cette étude permet donc d’approfondir les connaissances à l’égard de cette profession, en plein essor au pays, dans l’éventualité d’une intégration de ce groupe professionnel au Québec. / The intent of this exploratory study is to identify the factors that could influence the implementation of Physician Assistants in Quebec's medical system based on the opinions of General Physicians and Medical Specialists. The data were collected from semi-structured interviews conducted with 13 generalists and specialists from hospitals in the Montréal area and from the military clinic located in the Canadian Forces Base St-Jean (Québec). The study showed that perceived obstacles such as corporatism and the lack of information about the profession could interfere with physician assistant integration. However, participants agreed that these obstacles could be overcome. They have, at the same time, identified many very positive factors in favour of this integration. Physician assistants have unique skills and are already fully integrated in provincial health care systems in other Canadian provinces. This study offers a better understanding and greater awareness of this expanding profession in our country and the progress towards its possible integration in Québec.

Hospital performance metrics are an indicator of leadership performance. However, there is inadequate research on whether physician or nonphysician chief executive officers (CEOs) perform better in the U.S. hospitals. The purpose of this study was to examine which type of leaders is better. Leadership trait, situational leadership, and leadership behavior theories constituted the theoretical foundation. The key research question examined the relationship between a hospital's outcomes, which in this study, included hospital net income, patient experience ratings, and mortality rates, and the type of CEO in that hospital: physician or non-physician. A quantitative, causal comparative design was used to answer this question. Three hypotheses were tested using multivariate analysis of variance. The dependent variable was hospital outcomes: hospital net income, patient experience ratings, and mortality rates. The independent variable was the type of hospital CEO: physician and nonphysician. Datasets from 2014-2015 were used, which were publically available on the websites of U.S. based hospitals, research organizations, and journals. A sample of 60 hospitals was drawn from U.S. non-federal, short-term, acute care hospitals, based on number of staffed beds (n = 60). No significant differences were found between nonphysician and physician CEOs on hospitals' net income (p = .911), patient experience ratings (p = .166), or mortality rates (p = .636). Thus, the null hypotheses were retained. Findings suggest that physician and non-physician CEOs may produce similar outcomes in the hospitals they lead. Based on these findings, hospital boards can view CEO applicants equally when considering whom to hire and understanding U.S. hospital leadership.

This research project addresses the following: how topical talk operates in the organisation and management of MSE interactions; and how topical talk operates in the co-ordination of specific service requests and service provisions. It draws on a corpus of audio-recorded and transcribed interactions between general practitioners and persons seeking general medical services in suburban clinics in Brisbane, Australia. The corpus comprised a total of 67 medical service events (henceforth MSEs), audio-taped with the full informed consent of the participants. Many contemporary medical sociological accounts of the operation of topical talk in MSEs, typified by the work of Mishler (1981, 1984) and Waitzkin (1991), remain anchored to the 'professional dominance' thesis (Freidson 1970a; 1970b), arguing for the fundamental conflict between two perspectives - lay and professional. Topical talk has been formulated as one expression of this conflict in 'doctor-centred' communicative 'styles' (Byrne and Long 1976; Silverman 1987). Within such accounts, familiar interactional patterns in MSEs, including the content and structure of topics, have been theorised as instruments of power and control whereby the dominance of specialised medical knowledge and expertise are established and maintained. Mishler's (1984) characterisation of the conflict between a biomedically oriented 'voice of medicine' used by professional physicians (henceforth GPs) and a 'voice of the lifeworld' used by persons seeking medical services (henceforth Ps) is an expression of the 'professional dominance' thesis. The voices are characterised as attesting to a fundamental, theoretically problematic, asymmetry of power relations between GPs and Ps, thereby reinforcing the ideological status of professionals in general and the medical profession in particular. Further, recommendations regarding correctives to 'professional dominance' centre on advice GPs to attend to the primacy of Ps' talk on their experiences of illnesses rather than apparently 'ignoring' or transforming these topics into biomedical accounts of disease. This research project critiques this formulation of topical talk and the traditional theoretical and empirical bases on which it has drawn. This critique arises from the application of ethnomethodological approaches to the study of MSEs. Such approaches, as outlined in Chapters 2 and 3, are characterised by a number of conceptual and analytic premises: First, particular social structural features of social activities and the institutional contexts within which activities occur should not be assumed to be the primary criteria for judging the import and adequacy of situated action. Second, the parties to situated social events mutually constitute those events in the real world. Third, issues of agency are collaborative situated accomplishments such that the management of everyday social activities is accomplished by the people involved who show one another the rationalities of their actions as they assemble the familiar scenic features of those same institutional events (Garfinkel 1967; Sacks 1992a, 1992b). These assumptions have been applied in ethnomethodological analyses of social action, including the analysis of professional service encounters that have critiqued the 'professional dominance' thesis (Eglin and Wideman 1986; Sharrock 1979). The novelty of this study is the analysis of the operation of topic organisation as a phenomenon of order. This study also draws on recommendations within Ethnomethodology (Hester & Eglin 1997b; Watson 1997) that sequential and categorial organisations are mutually informative in the analysis of the rationality of situated social action. One of the particular contributions of this thesis is that it not only jointly applies both conversation analysis and membership categorisation analysis but also extends this recommendation to the inclusion of topic analysis as was originally provided for by Sacks (1992a , 1992b) and Garfinkel and Sacks (1970). Within this study a model of analysis has been constructed that has enabled the analytical consideration of four dimensions of social organisation: local sequential, extended sequential, topical and categorial organisations. The theoretical and empirical concepts of ethnomethodogical analysis have thus been developed and extended within this project. The central findings of this study are that in institutional service events, the 'service topic' is both significant and consequential, and that persons constitute themselves as bona fide incumbents of the categories GP or P by attending to their actions as topically organised. The local adequacy of any particular interactional move (such as questioning-answering, greetings, the design of a topic proposal, etc) is shown to be referenced to the service topic. This study found no evidence of potential or actual "struggles" between the 'voice of the life-world and the voice of medicine'. Rather, this study finds routine recognition on the part of both Ps and GPs of the centrality of the service topic and, thereby, the service task, and no evidence of orientation to distinctive biographical contributions staged in competition with biomedically relevant service topics. It is found that Ps' biographical references were made in the context of an assembled service topic such that particular service tasks, however conventional, were constituted as both relevant and reasonable as medical goods and service for the specific service recipient and provider. At the most general level, it is concluded that the service topic operates as a phenomenon of order in MSEs where order, as defined by Garfinkel and Weider (1992: 202), refers to all of the rationalities evident in the generic features of institutional events and settings, that is, the situated logic and intelligibility as well as the procedures whereby they are constituted as recognisable social events. The thesis concludes with a discussion of the implications of the findings for the theorisation, policy-making, medical education, and practices of GPs and Ps within MSEs. Overall, the significance of this work for researchers into medical interactions is that the relevance of the service topic and its pervasive organisational consequences need to be considered analytically. A major outcome of this thesis is the establishment of a new order of interest within the study of institutional interactions. The project demonstrates the pervasive consequences of service topics and thus provides a step forward in the study of institutional service interactions and ways of theorising their rationality, a step that extends beyond social structural pre-theorisations of power and domination and also beyond interactional accounts of the primary relevance of turn taking structures.

Nous cherchions à explorer les compétences que les intervenants du service des urgences (SU), des médecins et des infirmières travaillant en équipe dans des rôles complémentaires, ont développées dans la divulgation d‘un décès, pour éclairer l‘apprentissage de cette compétence de « Communicateur ». Nous avons utilisé des entrevues semi-dirigées et un échantillonnage non probabiliste de 8 intervenants. Nous avons analysé les entrevues à l‘aide de méthodes qualitatives reconnues. Le nombre total de présences de nos intervenants à une divulgation est estimé supérieur à 2000. Notre analyse a démontré qu‘ils utilisent une structure de divulgation uniforme. Néanmoins, ils repoussaient l‘utilisation d‘un protocole, parce que jugé trop rigide. La flexibilité et l‘empathie se sont révélées des qualités essentielles pour les intervenants. Nous représentons la visite de la famille comme un épisode de désorganisation/dysfonction qui se résorbe partiellement durant le séjour au SU. Nous proposons un modèle pédagogique qui est basé sur nos résultats. / We explored the competencies that Emergency Department (ED) healthcare providers (HPs), physicians and nurses working as team members with complementary roles, have developed through notifications of death, to inform the teaching of this ‘Communicator‘ competency. We used semi-structured interviews on a non-probabilistic sample of 8 HPs. We analyzed the interviews using recognized qualitative methods. The total self-estimated number of death notifications attended by our HPs is superior to 2000. Analysis showed that experienced HPs use a uniform structure to death notification in ED. In spite of this, the use of a protocol for notification was considered inappropriate because it was deemed too rigid. Flexibility and empathy emerged as essential qualities for HPs. We submit that the family‘s ED visit is an episode of disorganization/dysfunction that gets partially resolved during their stay. Based on our results, we propose an educational model for teaching delivery of news of death in the ED.

Cette étude exploratoire a pour but d’identifier les facteurs pouvant influencer l’implantation des adjoints au médecin dans le système de santé québécois, selon les perceptions de médecins omnipraticiens et de médecins spécialistes. La collecte de données pour cette étude qualitative s’est effectuée à l’aide d’entrevues semi-structurées effectuées auprès de 13 omnipraticiens et spécialistes provenant d’hôpitaux de Montréal et de la clinique médicale des Forces canadiennes de St-Jean (Québec). L’étude a démontré que des obstacles perçus, tels que le corporatisme et le manque d’information sur la profession, pourraient interférer avec l’intégration des adjoints au médecin au Québec. Cependant, les participants s’entendent pour dire que ces obstacles ne seraient pas insurmontables et ont, par la même occasion, identifié de nombreux éléments pouvant faciliter cette intégration. Les adjoints au médecin ont des compétences uniques et travaillent déjà dans d’autres provinces canadiennes qui ont un réseau de santé similaire au nôtre. Cette étude permet donc d’approfondir les connaissances à l’égard de cette profession, en plein essor au pays, dans l’éventualité d’une intégration de ce groupe professionnel au Québec. / The intent of this exploratory study is to identify the factors that could influence the implementation of Physician Assistants in Quebec's medical system based on the opinions of General Physicians and Medical Specialists. The data were collected from semi-structured interviews conducted with 13 generalists and specialists from hospitals in the Montréal area and from the military clinic located in the Canadian Forces Base St-Jean (Québec). The study showed that perceived obstacles such as corporatism and the lack of information about the profession could interfere with physician assistant integration. However, participants agreed that these obstacles could be overcome. They have, at the same time, identified many very positive factors in favour of this integration. Physician assistants have unique skills and are already fully integrated in provincial health care systems in other Canadian provinces. This study offers a better understanding and greater awareness of this expanding profession in our country and the progress towards its possible integration in Québec.

Thesis (Ph. D.)--Kent State University, 2004. / Title from PDF title page (viewed on Apr. 27, 2006). Includes bibliographical references (p. 175-209).