It's in your hands : the value of handsearching in conducting systematic reviews of public health interventions

Background While there is an emerging evidence base in public health, the evidence can often be difficult to find. Indexing of journals in MEDLINE has assisted those conducting systematic reviews to more easily identify published studies. However, information technology and the processes associated with indexing are not infallible. Studies may not be correctly marked by study design which may mean they are missed in the electronic searching process. Handsearching for evidence of intervention effectiveness has therefore become a recognized tool in the systematic review process.

Methods Resources to guide handsearching activity currently are clinically focused, and may not be sensitive to the characteristics of public health studies where study terminology may differ. In response to this issue, the Cochrane Health Promotion and Public Health Field (the Field) developed and implemented a small study to recruit and support handsearchers from around the world to identify health promotion and public health trials and systematic reviews. A strategic framework was developed to recruit and support handsearchers to search six public health-related journals.

Results In total, 131 trials and 21 systematic reviews were identified. The greatest value of handsearching was found to be in supplement editions and abstract sections of journals

Conclusions The study focused exclusively on indexed journals with the intention that tools and methods developed could be used to explore the potential for handsearching in non-indexed journals and for unpublished studies. The findings from this study will continue to support handsearching efforts and in doing so contribute to high quality systematic reviews of public health interventions.

Evaluating the effectiveness of public health interventions: the role and activities of the Cochrane Collaboration

Public health decision makers, funders, practitioners, and the public are increasingly interested in the evidence that underpins public health decision making. Decisions in public health cover a vast range of activities. With the ever increasing global volume of primary research, knowledge and changes in thinking and approaches, quality systematic reviews of all the available research that is relevant to a particular practice or policy decision are an efficient way to synthesise and utilise research efforts. The Cochrane Collaboration includes an organised entity that aims to increase the quality and quantity of public health systematic reviews, through a range of activities. This paper aims to provide a glossary of the terms and activities related to public health and the Cochrane Collaboration.

The role and theoretical evolution of knowledge translation and exchange in public health

Background There is an increased emphasis in public health research on effective models and strategies to support knowledge translation (KT), the exchange, synthesis and ethically sound application of research findings within a complex set of interactions among researchers and knowledge users. In other words, KT can be seen as an acceleration of the knowledge cycle—an acceleration of the natural transformation of knowledge into use (Canadian Institutes of Health Services Research. Knowledge Translation Strategy, 2004). The most recent conceptualizations consider the complexities of public health decision-making. The role of practitioners and communities is increasingly considered.

Methods We identify, describe and discuss the theoretical underpinnings of KT and recommend a way forward to build the evidence for more effective practice.

Results Theoretical perspectives increasingly influence research on KT in public health. A range of innovative work is being conducted to explore methods for KT using practical tools, often with the support of government.

Conclusions KT describes a crucial and to date under-developed element of the research process. There is an important gap in theoretically informed empirical studies of effectiveness of proposed approaches in public health, health promotion and preventive medicine, and thus much of the debate remains abstract. There is clearly an urgent policy need to establish the effectiveness of KT models in a range of contexts. This must include both the consideration of development and the utilization of knowledge.

Child protection and public health: nurses' responsibilities

Background. Health care workers have been recognized as having a key role in the protection and care of Scotland's children, particularly in respect of identification and detection of child abuse. Nurses, especially health visitors, are often the first professionals to suspect that child abuse has taken place. While previous research has found that health visitors have primarily perceived their role as that of providing support and advice to vulnerable families, there are pressures on them to fulfil a more narrow surveillance role. Concurrent with a lack of clarity about the role of health visitors in child protection, there has been increasing recognition that other nurses can also make an important contribution, including those who do not work directly with children.

Aims. The aim of the study was to explore nurses' understanding of their professional responsibilities in relation to child protection, and the potential for nurses to be involved in the protection of children from abuse.

Methods. A qualitative interview-based design was used, and 99 nurses working in an National Health Service trust in a Scottish city were interviewed, either individually or in groups, about their professional involvements in child protection issues. Interview data were subjected to thematic analysis.

Findings. There was lack of consensus among interviewees about the nursing remit in child protection issues, particularly with respect to the extent to which nurses should actively seek to detect cases of child abuse. An emphasis on identification and detection was not easily accepted by many nurses, and was perceived by some to be a change from their more traditional role of supporting families, as well as being potentially in conflict with some public health responsibilities.

Conclusion. In spite of the perception of some nurses that there is a sharp divide between child protection work and public health interventions, many of the child protection roles identified by nurses, such as supporting families, parenting education and service development, are clearly within the ambit of contemporary notions of public health. Furthermore, it is clear that there is a role in child protection for a much wider group of nurses than health visitors.

The TRIPS agreement and developing countries: a discussion of the paragraph 6 of the Doha declaration on public health

The Paragraph 6 solution arrived on 30th August 2003 to facilitate export of drugs to the countries which were not able to manufacture said drugs shows the total marginalization of developing countries in international treaty negotiations. A simple proposal by developing counties to use Article 30 of the TRIPS Agreement for such manufacture and export to non-manufacturing countries in order to avoid expensive litigations with the pharmaceutical multinationals took an ugly turn where not only the said proposal was totally rejected but export was added as one of the patenting rights in the TRIPS Agreement with payment of remuneration to patent holders. This introduction of export as one of the patenting rights was surrounded by a thicket of rules on the plea that such products would be diverted to ensure that the needing countries never acquire the requisite drugs. This article analyses the events leading to the establishment of the TRIPS Agreement, the elimination of developing countries from such negotiations through the use of suitably placed officials in the negotiating forums, the role of CEOs of the multinationals and the business NGOs such as International Intellectual Property Alliance and IPC (Intellectual Property Committee), epistemic community consisting of individuals such as Jacques Gorlin and Eric Smith and the subsequent development leading to the finalization of Para 6 Solution, which was an exact replication of events during the TRIPS negotiations. The analysis suggests that developing countries do not have any say in international negotiations and their agreements to such negotiations are essentially to legitimize their colonized existence.

Dance classes, youth cultures and public health

This article explores the social aspects of young people's participation in dance classes and its potential to lead to new directions in public health initiatives in Australia. The health benefits of dancing are promoted significantly less than other sports in spite of its popularity among young people. Dance classes, unlike the apparent abandonment of raving, present a specific, structured and codified dance style. Thus, it entail both self- and other-oriented subjectivity.

The role of a prospective public health intervention study register in building public health evidence: proposal for content and use

Evidence-informed practice is a key component of public health and the focus of much discussion, of which the nature of evidence and how it is best gathered and appraised has formed a large part. Prospective registration of trials is now a key component of rigour and quality in clinical research and has been supported at an international level through the WHO International Clinical Trials Registry Program. This paper discusses the scope and benefits of trial registration in clinical research, including greater transparency and reduced publication bias. It then considers the potential for a Prospective Public Health Intervention Studies Register specific to the needs of public health and aspects to be included in such a register. It is argued that this initiative has the potential to facilitate increased global cooperation and efficiency in the production of high quality evidence and ultimately in improved health outcomes for populations.

Why invest in a national public health program for stroke? An example using Australian data to estimate the potential benefits and cost implications

Objectives: Stroke is the world’s second leading cause of death in people aged over 60 years. Approximately 50,000 strokes occur annually in Australia with numbers predicted to increase by about one third over 10-years. Our objectives were to assess the economic implications of a public health program for stroke by: (1) predicting what potential health-gains and cost-offsets could be achieved; and (2) determining the net level of annual investment that would offer value-for-money.

Methods: Lifetime costs and outcomes were calculated for additional cases that would benefit if ‘current practice’ was feasibly improved, estimated for one indicative year using: (i) local epidemiological data, coverage rates and costs; and (ii) pooled effect sizes from systematic reviews.

Interventions: blood pressure lowering; warfarin for atrial fibrillation; increased access to stroke units; intravenous thrombolysis and aspirin for ischemic events; and carotid endarterectomy. Value-for-money threshold: AUD$30,000/DALY recovered.

Results: Improved, prevention and management could prevent about 27,000 (38%) strokes in 2015. In present terms (2004), about 85,000 DALYs and AUD$1.06 billion in lifetime cost-offsets could be recovered. The net level of annual warranted investment was AUD$3.63 billion.

Conclusions: Primary prevention, in particular blood pressure lowering, was most effective. A public health program for stroke
is warranted

Providing health services to migrants and refugees settling in Victoria, Australia: an analysis of the complexity, cost and policy implications for public health

The aim of the research was to identify factors related to the increased costs of providing health services to clients from a non-English speaking background (NESB), using a cross-sectional analysis of the administrative records of clients using community health services in the Northern Metropolitan region of Melbourne for the 2001/2002 financial year. The higher cost of providing services to NESB clients was influenced by four factors: increased consultation time, group attendance to an appointment, increased interpreting costs and the type of service provider. Family members and multilingual staff play a significant role in providing informal interpreting services or low-cost support for NESB consultants, and these activities should receive appropriate support. Additional funding is needed to support interpreting requirements when dealing with the health needs of NESB clients.

Research methods, evidence and public health

In theory, our research questions should drive our choice of method. In practice, we know this is not always the case. At various stages of the research process different factors may apply to restrict the choice of research method. These filters might include a series of inter-related factors such as the political context of the research, the disciplinary affiliation of the researchers, the research setting and peer-review. We suggest that as researchers conduct research and encounter the various filters they come to know the methods that are more likely to survive the filtering process. In future projects they may favour these methods. Public health problems and research questions may increasingly be framed in the terms that can be addressed by a restricted array of methods. Innovative proposals - where new methods are applied to old problems, old methods to new areas of inquiry and high-quality interdisciplinary research - may be unlikely to survive the processes of filtering. This may skew the public health knowledge base, limiting public health action. We argue that we must begin to investigate the process of research. We need to document how and why particular methods are chosen to investigate particular sets of public health problems. This will help us understand how we know what we know in public health and help us plan how we may more appropriately draw upon a range of research methods.