924 resultados para Evidence Based Medicine


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Objectives. This study aimed to investigate the knowledge, attitudes and perceptionstowards contraceptive use and counselling among medical students in Maharashtra, India. Setting. Considerable global maternal mortality and morbidity could be avoided through theuse of effective contraception. In India, contraception services are frequently unavailable or there are obstacles to obtaining modern, reversible contraceptives. Participants. A cross-sectional descriptive study using a self-administered questionnaire was conducted among 1996 medical students in their fifth year of study at 27 medical colleges in the state of Maharashtra, India. Descriptive and analytical statistics interpreted the survey instrument and significant results were presented with 95% CI. Results. Respondents expressed a desire to provide contraceptive services. A few studentshad experienced training in abortion care. There were misconceptions about moderncontraceptive methods and the impact of sex education. Attitudes towards contraceptionwere mainly positive, premarital counselling was supported and the influence of traditional values and negative provider attitudes on services was recognised. Gender, area of upbringing and type of medical college did not change the results. Conclusions. Despite mostly positive attitudes towards modern contraceptives, sex education and family planning counselling, medical students in Maharashtra have misconceptions about modern methods of contraception. Preservice and in-service training in contraceptive counselling should be implemented in order to increase women's access to evidence-based maternal healthcare services.

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This paper explores the nature and type of evidence employed by participants in an issue of public concern. By examining documents and interviewing members of the public involved in the debate, the way in which evidence was used in the arguments for and against the issue was determined. Three dimensions of evidence emerged from the data: formal scientific evidence based on the data; informal evidence (e.g. common sense, personal experience) and wider issues which impinge on the evidence (e.g. environmental or legal concerns). In this particular controversy, it was the questioning of the formal evidence by local scientists which became the 'magic bullet' but pertinent questioning by local nonscientists also framed the debate. The authors suggest that school science curricula should include practice in questioning and manipulating different sorts of real data in a variety of ways so that pupils are equipped and empowered to tackle contemporary issues of this kind.

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Obesity as a major public health and economic problem has risen to the top of policy and programme agendas in many countries, with prevention of childhood obesity providing a particularly compelling mandate for action. There is widespread agreement that action is needed urgently, that it should be comprehensive and sustained, and that it should be evidence-based. While policy and programme funding decisions are inevitably subject to a variety of historical, social, and political influences, a framework for defining their evidence base is needed. This paper describes the development of an evidence-based, decision-making framework that is particularly relevant to obesity prevention. Building upon existing work within the fields of public health and health promotion, the Prevention Group of the International Obesity Task Force (IOTF) developed a set of key issues and evidence requirements for obesity prevention. These were presented and discussed at an IOTF workshop in April 2004 and were then further developed into a practical framework. The framework is defined by five key policy and
programme issues that form the basis of the framework. These are: (i) building a case for action on obesity; (ii) identifying contributing factors and points of intervention; (iii) defining the opportunities for action; (iv)evaluating potential interventions; and (v) selecting a portfolio of specific policies, programmes, and actions. Each issue has a different set of evidence requirements and analytical outputs to support policy and programme decision-making. Issue 4 was identified as currently the most problematic because of the relative lack of efficacy and effectiveness studies. Compared with clinical decision-making where the evidence base is dominated by randomized controlled trials with high internal validity, the evidence base for obesity prevention needs many different types of evidence and often needs the informed opinions of stakeholders to ensure external validity and contextual relevance.

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Background: In 2002−03 a retrospective audit of the use of surgical antimicrobial prophylaxis (AMP) for elective nasal surgery was undertaken at the Royal Victorian Eye and Ear Hospital (RVEEH). The RVEEH is a publicly funded teaching hospital that provides specialist eye, nose and throat medicine in Victoria, Australia. The aim of the audit was to determine the extent to which the use of antimicrobial prophylaxis in the hospital was consistent with Australian and international evidence-based guidelines and if there was a need for the hospital to develop internal guidelines for the use of AMP.

Methods: The histories of 500 consecutive patients who had undergone nasal surgery within the study period of August 2001 and July 2002 were examined. The data collected from these histories included information such as the patients' age, gender, diagnosis, surgical procedure performed, antimicrobial agents used, and the length of follow up and a range of factors shown in previous studies to increase the risk of surgical site infection.

Results: A total of 306 (72.86%) patients were found to have received antimicrobial agents either prior to admission, during admission or on discharge. Only 24 patients (5.71%) were administered antimicrobials immediately prior to surgery and at no other time.

Conclusions: The findings of this study support the need for further research to examine the appropriateness of the use of AMP at the RVEEH and the need for internal guidelines for its use.

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This paper draws on the case study of a recent review of research literature on the influences (harms and benefits) on children and families of electronic media content and usage, undertaken on behalf of a Federal regulatory body (Australian Communications and Media Authority) by a multidisciplinary research team. Recent critiques of psychological studies of children and media have challenged the positivist social sciences to look outside of their own disciplinary warrants and to fully answer cultural studies critiques of ‘media effects’ research. Making connections outside the humanities in this case study involved making the rationales of communications and cultural studies methodologies available to those policy makers who normally may not consider such findings to be evidence-based or policy relevant. But it also involved providing a historical and institutional contextualization of positivist social and medical science findings, a contextualization not enabled by the underlying warrants and discourses of these disciplines. This paper focuses on those sections of the case study project concerned with psychological research on the effects of violent media and epidemiological and public health research on childhood obesity.

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Background: Panic disorder (PD) is one of the most common anxiety disorders seen in general practice, but provision of evidence-based cognitive-behavioural treatment (CBT) is rare. Many Australian GPs are now trained to deliver focused psychological strategies, but in practice this is time consuming and costly.

Objective: To evaluate the efficacy of an internet-based CBT intervention (Panic Online) for the treatment of PD supported by general practitioner (GP)-delivered therapeutic assistance.

Design: Panic Online supported by GP-delivered face-to-face therapy was compared to Panic Online supported by psychologist-delivered email therapy.

Methods: Sixty-five people with a primary diagnosis of PD (78% of whom also had agoraphobia) completed 12 weeks of therapy using Panic Online and therapeutic assistance with his/her GP (n = 34) or a clinical psychologist (n = 31). The mean duration of PD for participants allocated to these groups was 59 months and 58 months, respectively. Participants completed a clinical diagnostic interview delivered by a psychologist via telephone and questionnaires to assess panic-related symptoms, before and after treatment.

Results: The total attrition rate was 20%, with no group differences in attrition frequency. Both treatments led to significant improvements in panic attack frequency, depression, anxiety, stress, anxiety sensitivity and quality of life. There were no statistically significant differences in the two treatments on any of these measures, or in the frequency of participants with clinically significant PD at post assessment.

Conclusions: When provided with accessible online treatment protocols, GPs trained to deliver focused psychological strategies can achieve patient outcomes comparable to efficacious treatments delivered by clinical psychologists. The findings of this research provide a model for how GPs may be assisted to provide evidence-based mental healthcare successfully.

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Background: Mental illness is an escalating concern worldwide. The management of disorders such as anxiety and depression largely falls to family doctors or general practitioners (GPs). However, GPs are often too time constrained and may lack the necessary training to adequately manage the needs of such patients. Evidence-based Internet interventions represent a potentially valuable resource to reduce the burden of care and the cost of managing mental health disorders within primary care settings and, at the same time, improve patient outcomes.
Objective: The present study sought to extend the efficacy of a therapist-assisted Internet treatment program for panic disorder, Panic Online, by determining whether comparable outcomes could be achieved and maintained when Panic Online was supported by either GPs or psychologists.
Methods: Via a natural groups design, 96 people with a primary diagnosis of panic disorder (with or without agoraphobia) completed the Panic Online program over 12 weeks with the therapeutic assistance of their GP (n = 53), who had received specialist training in cognitive behavioral therapy, or a clinical psychologist (n = 43). Participants completed a clinical diagnostic telephone interview, conducted by a psychologist, and a set of online questionnaires to assess panic-related symptoms at three time periods (pretreatment, posttreatment, and 6 month follow-up).
Results: Both treatments led to clinically significant improvements on measures of panic and panic-related symptomatology from pretreatment to posttreatment. Both groups were shown to significantly improve over time. Improvements for both groups were maintained at follow-up; however, the groups did differ significantly on two quality of life domains: physical (F1,82 = 9.13, P = .00) and environmental (F1,82 = 4.41, P = .04). The attrition rate was significantly higher among those being treated by their GP (χ21 = 4.40, P = .02, N = 96).
Conclusions: This study provides evidence that Internet-based interventions are an effective adjunct to existing mental health care systems. Consequently, this may facilitate and enhance the delivery of evidence-based mental health treatments to increasingly large segments of the population via primary care systems and through suitably trained health professionals.

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In order to promote healthful nutrition, insight is needed into the determinants of nutrition behaviours. Behavioural determinant research and behavioural nutrition interventions have focused mostly on individual-level motivational factors. It has been argued that the individual's socio-cultural and physical environments may be the main determinants of nutrition behaviours. However, the theoretical basis and empirical evidence for environmental determinants of nutrition behaviours are not strong. The present paper is a narrative review informed by a series of systematic reviews and recent original studies on associations between environmental factors and nutrition behaviours to provide an overview and discussion of the evidence for environmental correlates and predictors of nutrition behaviour. Although the number of studies on potential environmental determinants of nutrition behaviours has increased steeply over the last decades, they include only a few well-designed studies with validated measures and guided by sound theoretical frameworks. The preliminary evidence from the available systematic reviews indicates that socio-cultural environmental factors defining what is socially acceptable, desirable and appropriate to eat may be more important for healthful eating than physical environments that define the availability and accessibility of foods. It is concluded that there is a lack of well-designed studies on environmental determinants of healthful eating behaviours. Preliminary evidence indicates that social environmental factors may be more important than physical environmental factors for healthful eating. Better-designed studies are needed to further build evidence-based theory on environmental determinants to guide the development of interventions to promote healthful eating.

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Background : General Practitioners and community nurses rely on easily accessible, evidence-based online information to guide practice. To date, the methods that underpin the scoping of user-identified online information needs in palliative care have remained under-explored. This paper describes the benefits and challenges of a collaborative approach involving users and experts that informed the first stage of the development of a palliative care website.

Method : The action research-inspired methodology included a panel assessment of an existing palliative care website based in Victoria, Australia; a pre-development survey (n = 197) scoping potential audiences and palliative care information needs; working parties conducting a needs analysis about necessary information content for a redeveloped website targeting health professionals and caregivers/patients; an iterative evaluation process involving users and experts; as well as a final evaluation survey (n = 166).

Results : Involving users in the identification of content and links for a palliative care website is time-consuming and requires initial resources, strong networking skills and commitment. However, user participation provided crucial information that led to the widened the scope of the website audience and guided the development and testing of the website. The needs analysis underpinning the project suggests that palliative care peak bodies need to address three distinct audiences (clinicians, allied health professionals as well as patients and their caregivers).

Conclusion :
Web developers should pay close attention to the content, language, and accessibility needs of these groups. Given the substantial cost associated with the maintenance of authoritative health information sites, the paper proposes a more collaborative development in which users can be engaged in the definition of content to ensure relevance and responsiveness, and to eliminate unnecessary detail. Access to volunteer networks forms an integral part of such an approach.

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Men's health literacy and its bearing on health-related attitudes and behaviour are curiously absent from discussions on health literacy and men's health. This is perhaps understandable given the lack of a theoretical understanding and empirical evidence. In this article, we review and comment on the published literature addressing health literacy and men's health literacy. We define 'health literacy', note a silent discourse on gender in the international debate on health literacy and identify gaps addressing men's health literacy. We also raise issues for research priorities and the practical development and implementation of evidence-based policies and programs aimed at improving men's health.

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The European Healthy Cities project can be characterized as a social movement that employs an extremely wide range of political, social and behavioural interventions for the development and sustenance of urban population health. At all of these levels, the movement is inspired by ideological, theoretical and evidence-based perspectives. The result of this stance is a dynamic, complex and diverse landscape of initiatives, plans, programmes and actions. In quantitative terms (the number of WHO designated cities and associated cities and communities through national networks), ‘Healthy Cities’ can be regarded as an extraordinary accomplishment and a credit for both WHO and cities in the movement. In qualitative terms, however, critics of the movement have maintained that little evidence on its success and effectiveness has been generated. This critique finds its foundations in the mere perceptions of evidence, the politics of science and urban governance, and perspectives on the preferred or professed utilities of evidence-based health notions. The article reviews the nature of evidence and its interface with politics and governance. Applying a conceptual framework combining insights from knowledge utilization theory, theoretical perspectives on (health) policy development, theory-based evaluations and planned intervention approaches, it demonstrates that, although the evidence is overwhelming, there are barriers to the implementation of such evidence that should be further addressed by ‘Healthy Cities’.

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Aim. This observational study sought to investigate the process of evidence use by health professionals during development of evidence-based clinical management tools.

Background. Studies conducted to explore the process of research use are scarce and knowledge of this process is essential for our understanding of the influences on research use in practice.

Design. A qualitative, non-participant, observational design.

Methods. Behaviour and actions of two separate multidisciplinary teams were observed and audio-recorded during a combined total of seven meetings for the development of clinical management tools. Semi-structured, one-to-one interviews were conducted approximately half-way through the development process and following completion of the clinical management tools.

Results. Three major themes emerged from this research. First, the process of clinical management tool development and evidence use. Nurses assumed responsibility for coordination of development which focused on describing current practice. Second, the forms of evidence employed during the development process included the use of experiential knowledge, opinions and knowledge of the context, in addition to research evidence. However, reference to research evidence was limited and its incorporation into the instrument was infrequently observed. Third, the use of research evidence emerged with respect to how such evidence was employed.

Conclusion. This study focused on real-life discussion and decision-making that occurred between health professionals when developing evidence-based clinical management tools. Health professionals may have a tendency to rely on their professional experience and current practice in preference to seeking and applying relevant research evidence.

Relevance to clinical practice. Nurses have an important role to play in the development of multidisciplinary evidence-based clinical management tools, but to actively participate in this process they need to be familiar with the relevant research evidence and have the skills and confidence to integrate the evidence into practice.

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The portfolio examines use of opiate antagonist medication (naltrexone hydrochloride) as a safe and effective treatment for opiate dependence. The program incorporates evidence-based assessment, treatment planning and after-care counselling. Detoxification using naltrexone is highly effective. Use of naltrexone predicts long-term abstinence and better health and social outcomes. Naltrexone implants improve compliance and outcomes.

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According to the Institute of Medicine of the National Academies, 80% of direct care in nursing homes in the USA is provided by workforce that has least formal education about patient care (1). This situation is echoed in Australian residential aged care facilities where the day-to-day management is largely provided by unregulated workers (i.e. nursing assistants, personal carers and nursing aides) and is overseen by registered nurses. Some facilities additionally have access to expert advice from continence nurse advisors. In order to assist the residential aged care workforce to provide continence care that is evidence-based, a team of researchers developed and trialled a suite of continence assessment tools that were mainly targeted to unregulated workers. This paper presents information on the development of the tools (Stage 1) and on their evaluation (Stage 2).