Vor dem Hintergrund eines zunehmenden Hausärztemangels in Deutschland und zahlreichen anderen Staaten untersucht die vorliegende Arbeit mit Hilfe quantitativer und qualitativer Methoden aktuelle Einflussfaktoren und Motive im Zusammenhang mit der Entscheidung junger Mediziner für oder gegen eine Karriere als Facharzt für Allgemeinmedizin. Die Untersuchung kombiniert dabei im Studienverlauf erhobene Daten zur Teilnahme Medizinstudierender an definierten allgemeinmedizinischen Lehrveranstaltungen mit Daten einer späteren Absolventenbefragung (n = 659). Die Ergebnisse der quantitativen Analysen tragen zur Evidenz hinsichtlich aktueller Einflussfaktoren auf die Berufswahl Allgemeinmedizin bei und unterstützen die Annahme, dass ein praxisorientiertes allgemeinmedizinisches Curriculum, sowohl in frühen als auch in späten Stadien des Medizinstudiums, die Nachwuchsgewinnung im Fach befördern kann. Die Ergebnisse der qualitativen Analysen geben einen weitreichenden Überblick über aktuell ausschlaggebende Gründe sowohl für, als auch gegen eine Karriere als Hausarzt. Implikationen im Hinblick auf die Entwicklung effektiver Strategien gegen die drohende Unterversorgung werden diskutiert.

BackgroundWithin dentistry, a limited body of literature exists regarding the referral relationships between general practitioners (GPs) and specialists. The purpose of this study was to investigate the referral relationship between GPs and periodontists within the state of Virginia. MethodsA survey focused on the demographic variables in the referral relationship between GPs and periodontists was developed. The survey was mailed to 800 dentists throughout the state of Virginia. Descriptive statistics was completed along with multivariate logistic regression analysis comparing the responses with the number of patients referred per month to a periodontist. ResultsFemale respondents were more likely to refer three or more patients per month to a periodontist than a male respondent (pConclusion This study indicates that four demographic variables have a statistical influence on the number of referrals per month from a GP to a periodontist. These variables are: female gender, practicing with one other dentist, employing two or more hygienists, and being greater than five miles away from the nearest periodontist.

Incomplete understanding of attrition from the physician workforce has hampered policy-makers’ efforts to achieve optimal alignment of the supply of physicians with population demand for medical services. This longitudinal study of Ontario primary care physicians uses health administrative data to characterize changes in physicians’ practice patterns over time. We examined the workload and scopes of practice of 21,240 physicians between 1992 and 2013. We found that physicians reduce their workloads gradually as they age, retiring from clinical practice at an average age of 70.5. Furthermore, we found that 60% of family physicians who stop providing comprehensive primary care continue to provide clinical services for an average of three years, with reduced workloads, before retiring fully. Our findings clarify the process of physician attrition from the workforce and will help to improve estimates of attrition and make physician workforce planning more accurate and effective.

Patients' non-adherence to treatment is a widespread phenomenon in healthcare. Time preferences (how individuals value outcomes over time) are one cause for non-adherence. Using quasi-hyperbolic discounting, two options in the future are weighted consistently. However, when the early option becomes available the weighting changes. This creates the potential for non-adherence. The agency relationship that exists between patients and doctors implies hidden information. When the patient's time preferences are hidden from the doctor, the doctor must choose how to recommend treatments. Exploring how doctors make treatment decisions when time preferences are hidden from them, and how this impacts adherence, is therefore important. The first contribution of the thesis is to outline a model of the patient-doctor interaction incorporating quasi-hyperbolic discounting and hidden information. This shows that doctors should adapt to non-adherence when the probability a patient is present-biased is large enough. Secondly, a national survey of Scottish GPs explores whether doctors have different time preferences for themselves or their patients. Doctors do have the same private and professional time preferences, but value the health state differently between frames. Lastly, a laboratory experiment tests whether students in the role of a doctor adapt to non-adherence in the way predicted by the model. Students find the socially optimal level of treatment on average. Adaptation is stronger when using a performance payment, and results did not vary along demographic characteristics. The thesis highlights the importance of the patient-doctor interaction for generating nonadherence, not just patient preferences. It also shows that GPs' private time preferences may suitably substitute their preferences for patients. Finally, it points towards potential incentives for doctors to improve patient outcomes.

Background: Dissemination of evidence-based mental health clinical practice guidelines had not been studied in Australia prior to the National General Practice Guideline Implementation Program. This naturalistic research reports ten national interventions designed to disseminate the NHMRC 1997 Clinical Practice Guideline Depression in Young People for GPs (GDIYP-GP) through 123 Divisions of General Practice. The guideline covered depression and suicide in young people aged 13 to 20 years. Aim: To evaluate a 'coordinated link agent' and 'enhanced packaged approach' for disseminating a national guideline by engaging 20 Divisions in using 5 dissemination models and to measure Divisions' capacities in performing unfunded local dissemination to GPs. Method: An Implementation Kit was the main national intervention, housing the guidelines and 5 models: Education by the Division; Education by an external provider; 3) Clinical Audit; 4) Segmented Formats and 5) Appraisal. Five studies are reported: 1) an organisational census on guideline-related practices in all topics; 2) a Case Study Database of 3 consecutive interviews of 51 participating Divisions; 3) a Guideline Appraisal study of 9 cohorts of doctors; 4) a Clinical Audit study of 54 doctors involving 1200 patients; and 5) a 'Segmented Formats' documentary analysis of Division communications on GDIYP-GP. Results: Prior dissemination by most Divisions was administrative mail outs rather than planned programs. In all, 70 instead of the pilot 20 organisations participated (57% of the sector) using 10,000 guidelines: 45 participated by 7 weeks and 71 by 35 weeks and the majority used multiple active strategies showing fidelity to the Kit. Education by the Division, Segmented Formats and Appraisal were the most adopted models. GDIYP-GP was acceptable and relevant to the majority of Divisions and to 9 samples of doctors. Conclusion: Divisions are one appropriate system through which evidence-based mental health guidelines can be disseminated to general practitioners. Uptake can be rapid using a flexible enhanced package approach with link-agent support. 3-6 months is needed for organisations to begin effective interventions. Divisions reorient their approach with guidance toward evidence-based dissemination but Division and practice barriers

Doctor of Philosophy (PhD) / This thesis describes a study of the utilisation of computers by individual general practitioners (GPs) in Australia, and compares the practice behaviour of GPs who use a computer as a clinical tool, either by prescribing, ordering tests, or storing patient data in an electronic medical record format, with those who do not use a computer for these functions. A survey of individual GP’s use of computers was conducted among 1,336 GPs who participated in the Bettering the Evaluation and Care of Health (BEACH) program between October 2003 and March 2005. The GPs were then assigned to groups according to their clinical use (or not) of a computer, and were compared on a range of variables including the characteristics of the GPs themselves, their practices, their patients, the morbidity they managed for their patients, and the managements they provided. Their behaviour was also compared, using a set of quality indicators designed for use with the BEACH data, and applicable in a primary care setting, to determine whether the clinical use of a computer has an affect on the quality of care GPs provide to their patients. Finally, GPs who use clinical software with embedded pharmaceutical advertising were compared with GPs not exposed to advertisements via this media, to determine whether such advertising influences the prescribing behaviour of GPs to favour advertised brands. From 44 quality indicators examined, clinical computer users performed ‘better’ on four and ‘worse’ on four. For the remaining 36 they exhibited no difference. Exposure to pharmaceutical advertising embedded in clinical software did not influence the prescribing behaviour of the GPs so exposed. Despite the belief espoused in the literature that computer use will improve the quality of patient care, I have found no evidence to demonstrate that the use of a computer for clinical activity has (as yet) affected, either positively or negatively, the quality of care GPs provide to their patients. The current push to computerise general practice will mean that this method of assessment will be difficult to replicate in the future, given the absence of control groups. Other research methods will need to be developed.

In 1978, Primary Health Care (PHC) was formally recognised, in the Declaration of Alma-Ata, as the key to achieving the World Health Organisation's goal of 'Health For All by the Year 2000' (HFA). PHC was seen as the solution to the inadequate illness management systems that had developed throughout the world. It was hoped that PHC would address some of the major inequalities in health observed both within and between countries by its balanced system of treatment and disease prevention. The WHO envisaged that PHC would take place as close as possible to where people live and work and be the first element of a continuing health care process. Additionally, health service collaboration and multi-professional partnerships were expected to replace professional boundaries and competition. Shortly after the Declaration of Alma-Ata, the World Health Organisation, supported by national and international nursing bodies, proposed that nurses would be the driving force behind the HFA movement as active partners in inter-professional teams, leaders in health care and resources to people rather than resources to other health professionals. In the ensuing years, although community health nurses were acknowledged by the government and the nursing profession as key players in PHC in Australia, practice nurses (nurses who are employed in general medical practices) were not identified within this group. Hence, it appeared as though these practice nurses were 'invisible', not considered important to PHC in Australia, or simply overlooked as a major influence on population health. The purpose of this study was to describe the current role of these nurses and to identify and analyse the factors that influenced their scope of practice and hence their contribution to PHC. The research was conducted as a case study of practice nurses in one Division of General Practice in southeast Queensland. The study was influenced by the constructivist paradigm of inquiry and utilised a complementary sequence of quantitative methods followed by qualitative investigation. The first stage of the study comprised a telephone followed by mail survey of general practitioners and practice nurses employed within the Division. This was followed by a second stage, which involved group and individual interviews of key informants and was supported by document review and observation. The study revealed that the practice nurse role is essentially one of assistant to the general practitioner wherein the nurse undertakes basic assessment procedures to aid the medical diagnosis, carries out delegated therapeutic procedures, and contributes to the administrative functioning of the practice. Autonomous nursing initiatives, which appear to be largely opportunistic and incidental to delegated activities, include physical and emotional support of patients, clarification and reinforcement of medical instructions, and the provision of health education. The practice nurse's role, and hence contribution to PHC, was found to be constrained by a number of factors. These factors include the current funding arrangements for general practice, the view that practice nurses are an option rather than a necessity, the general practitioners' control of the practice setting, the appropriation of nursing work to medical receptionists, the lack of professional development opportunities, and the practice nurses' passive acceptance of their circumstances. However, both general practitioners and practice nurses appreciate the value of nursing services in general practice and GPs would sanction the employment of more nurses, if given financial incentives, especially for the purpose of preventive care. The majority of practice nurses believe their role should be expanded to include autonomous functioning while most of the GPs were amenable to some extension of nursing practice but reticent or opposed to any independent interventions. There appears a need in Queensland for courses to prepare practice nurses for advanced practice if they want to expand their role in PHC beyond that of assistants to GPs. It would also seem to be in the nurses' interests to initiate a professional association of practice nurses as a vehicle to explore other issues relevant to their professional development. In addition, if PNs want to expand their role they will need to demonstrate improved patient outcomes and cost effectiveness.

Preventive care for the elderly originated with a study in Great Britain in 1964 that reported a large number of unmet health needs in the elderly and advocated early intervention. Subsequent randomised controlled trials (RCT) used a broad assessment of health including bio-medical, functional, psychological and social /environmental components but inconsistently demonstrated improved outcome for the elderly. 'Health checks' were introduced for all patients in British general practice in 1990. European and American models of care evolved similarly and justify a multidisciplinary team assessment, thorough training of assessment staff and medical supervision of recommendations. Two literature reviews published in 2000 have not reported sound evidence in favour of health assessments. Medicare funding of health assessments for the Australians aged 75 years and over was introduced in November 1999. A protocol for conducting 75+ Health Assessment (75+ HA) was developed and a pilot study was conducted in Yarrawonga in 1995 to initiate Australian research of this model of care. A RCT in the Adelaide Western Division of General Practice tested this model of care. The intervention group (n=50) had two 75+ HA one year apart. The control group (n=50) was left to usual care and had a 75+ HA one year later. Demographic data and the Short Form-36 were used to ensure both groups were comparable. Primary outcome measures did not demonstrate statistically significant reduction in problems nor mortality in the intervention (75+ HA) group compared to the control group. Significant improvements in secondary outcome measures in the intervention group were in self-rated health, depression score and decreased numbers reporting falls. 75+ HAs have been widely taken up by Australian general practitioners. It is no longer possible to conduct a RCT due to the inability to find a legitimate control group. Recommendations arising form this literature review and RCT include; evaluation studies of 75+ HA, concentration on a functional model of health and that nurses or allied health professionals should conduct the assessment in the elderly person's home. A consistent framework for analysis of 75+ HA is proposed. The elderly can be conceived to occupy one of 3 cohorts defined by their function state: No impairment of Activities of Daily Living (ADL), Impairment of Instrumental ADL only or Impairment of Basic ADL. The elderly without ADL impairment have not been demonstrated to benefit from 75+ HA and should be left to access the acute care stream of health services. The most disabled elderly with Basic ADL impairment have not consistently been shown to benefit from 75+ HA probably because they need a more intense level of community care. They should have Care Plans renewed regularly, as tested in the Australian Coordinated Care Trials. The cohort with Instrumental ADL impairment only seems most likely to benefit from annual 75+ HA. An evaluation of screening the elderly for Instrumental and Basic ADL impairment and providing appropriate services for each cohort is recommended. / Thesis (M.D.)--Department of General Practice, 2001.

This study explores the experiences of General Practitioners (GPs) and patients in the management of type 2 diabetes in contemporary Australia. I focus on the way the socioeconomic position of patients is a factor in that experience as my underlying interest is in exploring how health inequalities are understood, approached and handled in general practice. The study is thus a practical and grounded exploration of a widely debated theoretical issue in the study of social life, namely the relationship between the micro day-to-day interactions and events in the lives of individuals and the broad macro structure of society and the position of the individual within that. There is now wide acceptance and evidence that people’s social and economic circumstances impact on their health status and their experiences in the health system. However, there is considerable debate about the role played by primary medical care. Nevertheless, better theoretical understanding of the importance of psychosocial processes in generating social inequalities in health suggests medical care may well be important, as such processes are crucial in the care of chronic illnesses such as diabetes which are now such a large part of general practice work. I approach this study through an exploration of patient centred clinical practice. Patient centredness is a pragmatic, idealised prescriptive framework for clinical practice, particularly general practice. Patient centredness developed in part in response to critiques of biomedicine, and is premised on a notion of a more equal relationship between GP and patient, and one that places importance on the context of patients’ lives. It contains an implicit promise that it will help GP and patient engage with and confront social disadvantage.

Aims: To introduce the concepts “quality assurance”, “rational drug prescribing” and “outreach visits” in general practice in Storstrøm County, Denmark and study the effect of unsolicited mailed feedback and outreach visits on drug prescribing. Methods: The first step was to generate standardised charts displaying the county variations of drug volume prescribing within 13 major drug groups at the second ATC-level. The charts were mailed unsolicited to the 94 general practices in the county. Each practice could identify its position within the county prescribing variation. This procedure was repeated every six months from 1992 to 1998. In 1998 annual outreach visit were offered to general practice and 88 of 94 practices accepted. The awareness of prescribing profiles was monitored during the visits in 1998 and 1999. In 2000 a randomised controlled trial allocating practices into two parallel arms was launched. Effects of two desk guides on rational drug prescribing promoted during outreach visits were evaluated. Results: During the period of mailed feedback, there was a large variation in drug prescribing volumes between practices but little within-practice variation over time. No significant change was detected. Practitioners’ assessment of their own prescribing profiles improved significantly through the outreach visits. The prescribing of antibiotics was significantly affected by the desk guide whereas no effect was detected on the prescribing of non-steroid anti-inflammatory drugs. Conclusions: Semi-annually mailed feedback over a seven-year period had no significant effect on prescribing volumes or variations in prescribing volumes, but some effect on the practitioners’ awareness of their own prescribing profiles. Outreach visits significantly improved the awareness. A randomised controlled trial using outreach visits combined with a simple desk guide affected the prescribing of some antibacterial drugs as intended whereas the similar intervention had no detectable effect on the prescribing of non-steroid anti-inflammatory drugs.