Understanding the integration of artificial intelligence in healthcare organisations and systems through the NASSS framework: a qualitative study in a leading Canadian academic centre.

BACKGROUND: Artificial intelligence (AI) technologies are expected to "revolutionise" healthcare. However, despite their promises, their integration within healthcare organisations and systems remains limited. The objective of this study is to explore and understand the systemic challenges and implications of their integration in a leading Canadian academic hospital. METHODS: Semi-structured interviews were conducted with 29 stakeholders concerned by the integration of a large set of AI technologies within the organisation (e.g., managers, clinicians, researchers, patients, technology providers). Data were collected and analysed using the Non-Adoption, Abandonment, Scale-up, Spread, Sustainability (NASSS) framework. RESULTS: Among enabling factors and conditions, our findings highlight: a supportive organisational culture and leadership leading to a coherent organisational innovation narrative; mutual trust and transparent communication between senior management and frontline teams; the presence of champions, translators, and boundary spanners for AI able to build bridges and trust; and the capacity to attract technical and clinical talents and expertise. Constraints and barriers include: contrasting definitions of the value of AI technologies and ways to measure such value; lack of real-life and context-based evidence; varying patients' digital and health literacy capacities; misalignments between organisational dynamics, clinical and administrative processes, infrastructures, and AI technologies; lack of funding mechanisms covering the implementation, adaptation, and expertise required; challenges arising from practice change, new expertise development, and professional identities; lack of official professional, reimbursement, and insurance guidelines; lack of pre- and post-market approval legal and governance frameworks; diversity of the business and financing models for AI technologies; and misalignments between investors' priorities and the needs and expectations of healthcare organisations and systems. CONCLUSION: Thanks to the multidimensional NASSS framework, this study provides original insights and a detailed learning base for analysing AI technologies in healthcare from a thorough socio-technical perspective. Our findings highlight the importance of considering the complexity characterising healthcare organisations and systems in current efforts to introduce AI technologies within clinical routines. This study adds to the existing literature and can inform decision-making towards a judicious, responsible, and sustainable integration of these technologies in healthcare organisations and systems.

An urgent call for the environmental sustainability of health systems: A 'sextuple aim' to care for patients, costs, providers, population equity and the planet.

Health systems have a duty to protect the health and well-being of individuals and populations. Yet, healthcare contributes about 4.6% of global greenhouse gas emissions. Health systems need to question and improve established practices, assume strong environmental leadership, and aim for ambitious, sometimes radical, actions in favour of the climate. In this paper, we interrogate the suitability and feasibility of integrating the aim of 'environmental sustainability' to form the 'Sextuple Aim.' Environmental sustainability may be in tension with, but also a potential lever to meet the other cardinal aims: (1) quality and experience of patient care; (2) population health; (3) quality of work and satisfaction of healthcare providers; (4) equity and inclusion; and (5) cost reduction. We propose policy and practical avenues to help move towards the Sextuple Aim.

Artificial intelligence in health care: laying the Foundation for Responsible, sustainable, and inclusive innovation in low- and middle-income countries.

The World Health Organization and other institutions are considering Artificial Intelligence (AI) as a technology that can potentially address some health system gaps, especially the reduction of global health inequalities in low- and middle-income countries (LMICs). However, because most AI-based health applications are developed and implemented in high-income countries, their use in LMICs contexts is recent and there is a lack of robust local evaluations to guide decision-making in low-resource settings. After discussing the potential benefits as well as the risks and challenges raised by AI-based health care, we propose five building blocks to guide the development and implementation of more responsible, sustainable, and inclusive AI health care technologies in LMICs.

Improving delivery of care in rural emergency departments: a qualitative pilot study mobilizing health professionals, decision-makers and citizens in Baie-Saint-Paul and the Magdalen Islands, Québec, Canada.

BACKGROUND: Emergency departments (EDs) in rural and remote areas face challenges in delivering accessible, high quality and efficient services. The objective of this pilot study was to test the feasibility and relevance of the selected approach and to explore challenges and solutions to improve delivery of care in selected EDs. METHODS: We conducted an exploratory multiple case study in two rural EDs in Québec, Canada. A survey filled out by the head nurse for each ED provided a descriptive statistical portrait. Semi-structured interviews were conducted with ED health professionals, decision-makers and citizens (n = 68) and analyzed inductively and thematically. RESULTS: The two EDs differed with regards to number of annual visits, inter-facility transfers and wait time. Stakeholders stressed the influence of context on ED challenges and solutions, related to: 1) governance and management (e.g. lack of representation, poor efficiency, ill-adapted standards); 2) health services organization (e.g. limited access to primary healthcare and long-term care, challenges with transfers); 3) resources (e.g. lack of infrastructure, limited access to specialists, difficult staff recruitment/retention); 4) and professional practice (e.g. isolation, large scope, maintaining competencies with low case volumes, need for continuing education, teamwork and protocols). There was a general agreement between stakeholder groups. CONCLUSIONS: Our findings show the feasibility and relevance of mobilizing stakeholders to identify context-specific challenges and solutions. It confirms the importance of undertaking a larger study to improve the delivery of care in rural EDs.

Artificial Intelligence and Health Technology Assessment: Anticipating a New Level of Complexity.

Artificial intelligence (AI) is seen as a strategic lever to improve access, quality, and efficiency of care and services and to build learning and value-based health systems. Many studies have examined the technical performance of AI within an experimental context. These studies provide limited insights into the issues that its use in a real-world context of care and services raises. To help decision makers address these issues in a systemic and holistic manner, this viewpoint paper relies on the health technology assessment core model to contrast the expectations of the health sector toward the use of AI with the risks that should be mitigated for its responsible deployment. The analysis adopts the perspective of payers (ie, health system organizations and agencies) because of their central role in regulating, financing, and reimbursing novel technologies. This paper suggests that AI-based systems should be seen as a health system transformation lever, rather than a discrete set of technological devices. Their use could bring significant changes and impacts at several levels: technological, clinical, human and cognitive (patient and clinician), professional and organizational, economic, legal, and ethical. The assessment of AI's value proposition should thus go beyond technical performance and cost logic by performing a holistic analysis of its value in a real-world context of care and services. To guide AI development, generate knowledge, and draw lessons that can be translated into action, the right political, regulatory, organizational, clinical, and technological conditions for innovation should be created as a first step.

Rethinking the electronic health record through the quadruple aim: time to align its value with the health system.

Electronic health records (EHRs) are considered as a powerful lever for enabling value-based health systems. However, many challenges to their use persist and some of their unintended negative impacts are increasingly well documented, including the deterioration of work conditions and quality, and increased dissatisfaction of health care providers. The "quadruple aim" consists of improving population health as well as patient and provider experience while reducing costs. Based on this approach, improving the quality of work and well-being of health care providers could help rethinking the implementation of EHRs and also other information technology-based tools and systems, while creating more value for patients, organizations and health systems.

Cadre stratégique pour soutenir l'évaluation des projets complexes et innovants en santé numérique.

Digital technologies play a central role in strategies to improve access, quality and efficiency of health care and services. However, many digital health projects have failed to become sustainable and spread across health organizations and systems. This situation is partly due to the fact that these projects are often developed and evaluated by reducing the issues linked mainly to the technological dimension. Such tradition has paid little attention to the fact that technology is introduced into pluralistic and complex sociotechnical systems such as health organizations and systems. The aim of this article is to propose practical and theorical, non-prescriptive, elements of reflection that can serve as a basis for evaluating complex and innovative digital health projects. This reflection builds on the lessons learned from the application of a strategic framework for evaluating three major complex and innovative digital health projects in Quebec over the last 15 years.

[Strategic framework to Support the evaluation of complex and innovative digital health projects] / Cadre stratégique pour soutenir l'évaluation des projets complexes et innovants en santé numérique.

Digital technologies play a central role in strategies to improve access, quality and efficiency of health care and services. However, many digital health projects have failed to become sustainable and spread across health organizations and systems. This situation is partly due to the fact that these projects are often developed and evaluated by reducing the issues linked mainly to the technological dimension. Such tradition has paid little attention to the fact that technology is introduced into pluralistic and complex sociotechnical systems such as health organizations and systems. The aim of this article is to propose practical and theorical, non-prescriptive, elements of reflection that can serve as a basis for evaluating complex and innovative digital health projects. This reflection builds on the lessons learned from the application of a strategic framework for evaluating three major complex and innovative digital health projects in Quebec over the last 15 years.

[Organizational and systemic conditions of citizen-patient involvement in the development of telehealth in Quebec]. / Conditions organisationnelles et systémiques à l'implication des citoyens-patients dans le développement de la télésanté au Québec.

OBJECTIVES: Involving citizens-patients in decisions regarding telehealth services could allow a better match between the services offered and the needs and contexts of individuals and communities. This study aims to explore the organizational and systemic conditions that can influence citizen-patient involvement in the development of telehealth in Quebec. METHODS: A qualitative study based on semi-structured interviews with 29 key informants was conducted. A deductive-inductive thematic analysis was performed based on an integrative framework derived from diffusion of innovation theories. RESULTS: Citizen-patient involvement in the development of telehealth remains dependent on many organizational and systemic conditions. At the organizational level, it could affect the dynamics, process, cultures, rules and operations in organizations; hence the needs for adequate human and material resources as well as the availability of support for change. At the systemic level, the ideology, the sociopolitical context and the decisions in favor (or not) of a citizen appropriation of the decision-making are central. Concerns about scientific evidence, training, as well as the roles of professional federations, and citizen-patient groups have also emerged. Organizational and systemic levels are interdependent. CONCLUSION: The organizational and systemic contexts may explain part of the contrast between the discourse in favor of citizen-patient involvement in telehealth decision-making and the reality observed in Quebec. This study provides a basis for analyzing citizen-patient involvement in services development from the perspective of organizational and systemic changes.

[Factors influencing electronic personal health record (ePHR) adoption by Primary Health Care providers in Quebec: Professional and organizational perspective]. / Conditions d'adoption du dossier de santé électronique personnel par les professionnels de la première ligne au Québec : perspectives professionnelle et organisationnelle.

INTRODUCTION: We aimed to describe and analyse the factors and conditions influencing ePHR adoption by primary healthcare professionals for the follow-up and management of chronic diseases, as perceived by healthcare professionals and health organization managers. METHODS: A qualitative study was conducted in the context of an ePHR experimentation project in Quebec. In-depth semi-structured individual interviews were conducted with 11 professionals and three managers directly involved in ePHR implementation in a primary healthcare organization. RESULTS: The results highlight the emergence of themes comprising facilitators or barriers to ePHR adoption. The main factors identified were the clinicians' leadership and previous involvement in organizational transformations, the context of practice, technology maturity providing a useful, additional and relevant content, integration with the available clinical information systems facilitating two-way communication and supporting the development of patient-professional partnerships and patients' use and adherence. The organizational precursors identified refer to the organizational receptivity to change, adjustment to participants' values, and the policies and practices set up to support ePHR adoption by professionals and their patients. Cost is a major issue determining ePHR implementation. CONCLUSION: The factors and conditions identified will be useful strategically and operationally to design and implement new clinical and organizational practices and develop adapted technologies facilitating ePHR adoption by professionals.

[Reorientation of health services and health promotion: a review of the situation]. / La réorientation des services de santé et la promotion de la santé : une lecture de la situation.

The Ottawa Charter constitutes a major turning point in the world's vision of health, resources and the strategies to be implemented in order to respond to the populations expectations in this field. However, these expectations are no longer limited to the conventional biomedical concept of health, strongly care-oriented and focused on diseases. They currently integrate prevention of diseases and health promotion. Five main strategic actions have been identified to achieve these goals: 1) elaboration of public health policies; 2) creation of supportive environments; 3) strengthening of community actions; 4) development of individual skills; and 5) reorientation of health services. Almost 3 decades after the Ottawa Charter, what is the real orientation of health services in relation to health promotion? To answer this question, we will discuss the results of this approach, while analysing the multiple elements and factors that have contributed to these results, largely considered to have a mixed record in the literature.

[Using telemedicine to improve chronic disease monitoring]. / L'utilisation des télésoins à domicile pour un meilleur suivi des maladies chroniques.

AIM: The purpose of this study was to understand how home telecare technologies can be used to improve services for people with chronic diseases. METHODS: Canadian elders with at least one of the targeted chronic diseases (COPD, heart failure, hypertension, diabetes) were asked to use telehomecare equipment. The data needed to assess the implementation process and to monitor outcomes were collected through participatory observation, documentary analysis and interviews. RESULTS: The study found that the technology has a number of benefits for patients, particularly in terms of access to health services. By enabling patients to access more information about their health, the use of the technology, combined with an educational program, contributes to increasing their capacity for self-management. The results also indicate that the telehomecare equipment had a positive impact on clinical decision-making. By facilitating health professionals' access to information and expertise, it was found to promote interprofessional practice. The study found that telehomecare technology has an organizational impact on practice and requires organizational adaptation, the form of which will depend on local organizational and clinical settings. CONCLUSION: The results suggest that telehomecare technology helps to create conditions that need to be met by health care organizations in order to improve service delivery to people with chronic diseases, particularly with regard to interprofessional collaboration, health professionals' access to information and expertise and active patient participation. However, the successful implementation of the technology requires a detailed analysis of the settings in which it is used.

[The impact of information and communication technologies on nurse retention]. / L'influence des technologies de l'information et des communications sur le maintien en poste des infirmières.

AIM: The purpose of this study was to determine the potential impact of information and communication technologies (ICTs) on nursing practice and nurse retention in remote, intermediate and peripheral regions of Quebec, Canada. METHODS: A qualitative study using semi-structured interviews (n=21) was conducted among nursing managers from 16 health and social services centers (French acronym: CSSS) in the province of Quebec. RESULTS: The study found that a range of ICT applications are used, though not to the same extent in all organizations. The participants assessed the impact of computerization and telehealth applications on nursing practice and emphasized the relationships between telehealth and nurse retention, particularly through professional development. The participants also reported that ICTs can have different impacts on nurse retention (i.e. little or no impact, unclear impact, or indirect positive impact). CONCLUSIONS: The main findings indicate significant heterogeneity, both in terms of the nursing shortage and in terms of the integration of ICT in nursing practice. While focusing on a comparative approach, future research should further explore the impact of ICT on nursing practice and, indirectly, on nurse retention, which requires a contextual approach to ICT applications and workplaces and an analysis of staff characteristics.

Integrating environmental considerations in digital health technology assessment and procurement: Stakeholders' perspectives.

Background: Digital health technologies (DHTs) are promoted as means to reduce the environmental impact of healthcare systems. However, a growing literature is shedding light on the highly polluting nature of the digital industry and how it exacerbates health inequalities. Thus, the environmental footprint of DHTs should be considered when assessing their overall value to healthcare systems. The objectives of this article are to: (1) explore stakeholders' perspectives on integrating the environmental impacts of DHTs in assessment and procurement practices; (2) identify the factors enabling or constraining the operationalisation of such a change; and (3) encourage a constructive dialogue on how environmental issues fit within healthcare systems' push for more DHTs. Methods: Semi-structured interviews were conducted with 29 stakeholders involved in DHTs in a large Canadian academic healthcare centre. Data were collected and analysed through a mixed deductive-inductive process using a framework derived from diffusion of innovations theories. Results: The integration of the environmental impact of DHTs in assessment and procurement is contingent upon key micro-meso-macrosystemic factors that either enable or constrain changes in practices and processes. Innovation (micro) factors include stakeholders' recognition of the environmental issue and the extent to which it is feasible for them to address the environmental impact of DHTs. Organisational (meso) factors include the organisation's culture, leadership, policies, and practices, as well as the expertise and professional skillsets available. Finally, external (macro) factors include political and regulatory (e.g., national strategy, laws, standards, norms), economic (e.g., business models, public procurement), and professional and scientific factors (e.g., evidence, methodologies, clinical guidelines). Conclusion: Considering the environmental impact of DHTs depends on micro-meso-macrosystemic factors involving a variety of stakeholders and levels of governance, sometimes with divergent or even antagonistic objectives and expectations. It highlights the importance of better understanding the complexity inherent in the environmental shift in healthcare.

The 'wrong pocket' problem as a barrier to the integration of telehealth in health organisations and systems.

The COVID-19 pandemic has accelerated the deployment of telehealth services in many countries around the world. It also revealed many barriers and challenges to the use of digital health technologies in health organisations and systems that have persisted for decades. One of these barriers is what is known as the 'wrong pocket' problem - where an organisation or sector makes expenditures and investments to address a given problem, but the benefits (return on investment) are captured by another organisation or sector (the wrong pocket). This problem is the origin of many difficulties in public policies and programmes (e.g. education, environment, justice and public health), especially in terms of sustainability and scaling-up of technology and innovation. In this essay/perspective, we address the wrong pocket problem in the context of a major telehealth project in Canada. We show how the problem of sharing investments and expenses, as well as the redistribution of economies among the different stakeholders involved, may have threatened the sustainability and scaling-up of this project, even though it has demonstrated the clinical utility and contributed to improving the health of populations. In conclusion, the wrong pocket problem may be decisive in the reduced take-up, and potential failure, of certain telehealth programmes and policies. It is not enough for a telehealth service to be clinically relevant and 'efficient', it must also be mutually beneficial to the various stakeholders involved, particularly in terms of the equitable sharing of costs and benefits (return on investment) associated with the implementation of this new service model. Finally, the wrong pocket concept offers a helpful lens for studying the success, sustainability, and scale-up of digital transformations in health organisations and systems. This needs to be considered in future research and evaluations in the field.

Implementation of the Acute Care for Elders Strategy to Improve the Quality of Care Transitions in Quebec and Ontario: a Retrospective Multiple Case Study.

Background: In 2016, two Canadian hospitals participated in a quality improvement (QI) program, the International Acute Care for Elders (ACE) Collaborative, and sought to adapt and implement a transition coach intervention (TCI). Both hospitals were challenged to provide optimal continuity of care for an increasing number of older adults. The two hospitals received initial funding, coaching, educational materials, and tools to adapt the TCI to their local contexts, but the QI project teams achieved different results. We aimed to compare the implementation of the ACE TCI in these two Canadian hospitals to identify the factors influencing the adaptation of the intervention to the local contexts and to understand their different results. Methods: We conducted a retrospective multiple case study, including documentary analysis, 21 semi-structured individual interviews, and two focus groups. We performed thematic analysis using a hybrid inductive-deductive approach. Results: Both hospitals met initial organizational goals to varying degrees. Our qualitative analysis highlighted certain factors that were critical to the effective implementation and achievement of the QI project goals: the magnitude of changes and adaptations to the initial intervention; the organizational approaches to the QI project implementation, management, and monitoring; the organizational context; the change management strategies; the ongoing health system reform and organizational restructuring. Our study also identified other key factors for successful care transition QI projects: minimal adaptation to the original evidence-based intervention; use of a collaborative, bottom-up approach; use of a theoretical model to support sustainability; support from clinical and organizational leadership; a strong organizational culture for QI; access to timely quality measures; financial support; use of a knowledge management platform; and involvement of an integrated research team and expert guidance. Conclusion: Many of the lessons learned and strategies identified from our analysis will help clinicians, managers, and policymakers better address the issues and challenges of adapting evidence-based innovations in care transitions for older adults to local contexts.

[The Eastern Quebec telepathology network: a real collective project]. / Le réseau de télépathologie de l'Est du Québec - Un véritable projet collectif.

The aim of the Eastern Québec telepathology network is to provide uniform diagnostic telepathology services across a huge geographic region with a low population density. This project is intended to provide surgeons and pathologists with frozen section and second opinion services anywhere and at any time across the entire region, in order to avoid unnecessary patient transfer. The project has been implemented in 21 sites, each equipped with a whole slide scanner, a macroscopy station, a videoconferencing device and a viewer/case management and collaboration solution. Of the 21 sites, 6 are devoid of a pathology laboratory, two have no pathologist and 5 have only one pathologist on site. Signs of improvement of medical care in this region are already apparent since the Eastern Québec telepathology network has been implemented. However, it is important not to underestimate the challenges related to change management in the course of implementation of such a new technology.

Virtual Care and the Inverse Care Law: Implications for Policy, Practice, Research, Public and Patients.

Virtual care spread rapidly at the outbreak of the COVID-19 pandemic. Restricting in-person contact contributed to reducing the spread of infection and saved lives. However, the benefits of virtual care were not evenly distributed within and across social groups, and existing inequalities became exacerbated for those unable to fully access to, or benefit from virtual services. This "perspective" paper discusses the extent to which challenges in virtual care access and use in the context of COVID-19 follow the Inverse Care Law. The latter stipulates that the availability and quality of health care is inversely proportionate to the level of population health needs. We highlight the inequalities affecting some disadvantaged populations' access to, and use of public and private virtual care, and contrast this with a utopian vision of technology as the "solution to everything". In public and universal health systems, the Inverse Care Law may manifests itself in access issues, capacity, and/or lack of perceived benefit to use digital technologies, as well as in data poverty. For commercial "Direct-To-Consumer" services, all of the above may be encouraged via a consumerist (i.e., profit-oriented) approach, limited and episodic services, or the use of low direct cost platforms. With virtual care rapidly growing, we set out ways forward for policy, practice, and research to ensure virtual care benefits for everyone, which include: (1) pay more attention to "capabilities" supporting access and use of virtual care; (2) consider digital technologies as a basic human right that should be automatically taken into account, not only in health policies, but also in social policies; (3) take more seriously the impact of the digital economy on equity, notably through a greater state involvement in co-constructing "public health value" through innovation; and (4) reconsider the dominant digital innovation research paradigm to better recognize the contexts, factors, and conditions that influence access to and use of virtual care by different groups.

Implementation of a new clinical and organisational practice to improve access to primary care services: a protocol for an effectiveness-implementation hybrid study.

INTRODUCTION: In Canada, as in most Organisation for Economic Co-operation and Development countries, healthcare systems face significant challenges in ensuring better access to primary care. A regional healthcare organisation in Quebec (Canada) serving a population of approximately 755 459 citizens has implemented a standardised access approach to primary care services for this population. The objective of this new clinical and organisational practice is to ensure that users benefit from the same referral process, regardless of the entry point, in order to be directed to the right services. This new practice integrates a shared decision-making process between the user and the professional, and a collaborative process between different health professionals within and between services. The objective of our research is to identify and characterise the conditions of implementation of this practice. METHODS: This effectiveness-implementation hybrid investigation will use an embedded single-case study, defined in this case as the process of implementing a clinical and organisational practice within a healthcare organisation. Further to an evaluation conducted during a preliminary phase of the project, this study consists of evaluating the implementation of this new practice in four medical clinics (family medicine groups). A qualitative analysis of the data and a quantitative preimplementation and postimplementation analysis based on performance indicators will be conducted. This study is ultimately situated within a participatory organisational approach that involves various stakeholders and users at each step of the implementation and evaluation process. ETHICS AND DISSEMINATION: This study was approved by the Ethics Committee of the Sectoral Research in Population Health and Primary Care of the Centre intégré universitaire de santé et de services sociaux de la Capitale-Nationale (#2020-1800). The results of the investigation will be presented to the stakeholders involved in the advisory committees and at several scientific conferences. Manuscripts will be submitted to peer-reviewed journals.

Supporting work practices through telehealth: impact on nurses in peripheral regions.

BACKGROUND: In Canada, workforce shortages in the health care sector constrain the ability of the health care system to meet the needs of its population and of its health care professionals. This issue is of particular importance in peripheral regions of Quebec, where significant inequalities in workforce distribution between regions has lead to acute nursing shortages and increased workloads. Information and communication technologies (ICTs) are innovative solutions that can be used to develop strategies to optimise the use of available resources and to design new nursing work practices. However, current knowledge is still limited about the real impact of ICTs on nursing recruitment and retention. Our aim is to better understand how work practice reorganization, supported by ICTs, and particularly by telehealth, may influence professional, educational, and organizational factors relating to Quebec nurses, notably those working in peripheral regions. METHODS/DESIGN: First, we will conduct a descriptive study on the issue of nursing recruitment. Stratified sampling will be used to select approximately twenty innovative projects relating to the reorganization of work practices based upon ICTs. Semi-structured interviews with key informants will determine professional, educational, and organizational recruitment factors. The results will be used to create a questionnaire which, using a convenience sampling method, will be mailed to 600 third year students and recent graduates of two Quebec university nursing faculties. Descriptive, correlation, and hierarchical regression analyses will be performed to identify factors influencing nursing graduates' intentions to practice in peripheral regions. Secondly, we will conduct five case studies pertaining to the issue of nursing retention. Five ICT projects in semi-urban, rural, and isolated regions have been identified. Qualitative data will be collected through field observation and approximately fifty semi-structured interviews with key stakeholders. DISCUSSION: Data from both parts of this research project will be jointly analysed using triangulation of researchers, theoretical approaches, methods, and results. Continuous exchanges with decision makers and periodic knowledge transfer activities are planned to facilitate the dissemination and utilization of research results in policies regarding the nursing recruitment and retention.