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Doctoral research in nursing is central to advancing scientific knowledge, strengthening professional identity, and informing evidence-based practice, education, and health policy. Analyzing the thematic content of doctoral theses offers insight into research priorities and national variations in nursing scholarship. Yet, no systematic cross-country analysis has examined the thematic focus of such work.
To explore and describe the diversity and scope of doctoral nursing research themes across eight countries in the Sigma Europe Region, identifying key areas of scholarly focus and shared priorities.
A document-based qualitative study using reflexive thematic analysis, as outlined by Braun and Clarke, to examine patterns of meaning within thesis summaries.
The study included doctoral nursing thesis summaries defended between January 2020 and December 2023, sourced from national and institutional repositories in eight countries of the Sigma Europe Region. A total of 15 repositories (4 national, 11 institutional) were systematically searched, and additional summaries were obtained via direct contact with universities offering doctoral nursing programmes.
Data were collected between September 2024 and February 2025 using predefined inclusion and exclusion criteria. In total, 431 eligible thesis summaries were analyzed following Braun and Clarke's six-phase framework, supported by MAXQDA software for data management and coding.
Thematic analysis identified three overarching domains: (1) foundations of nursing practice and care philosophy, (2) systemic and organizational dimensions of nursing, and (3) clinical innovation and public health impact. Ten interrelated themes emerged, including holistic and patient-centred care; emotional, psychological, and quality-of-life dimensions; communication in healthcare; workforce challenges; transforming nursing practice; maternal, neonatal and pediatric health; digital and virtual health innovations; public health and chronic disease management; and disease management, caregiving, and outcomes. Cross-cutting elements such as cultural sensitivity and resilience spanned multiple themes.
This cross-national synthesis demonstrates the breadth and depth of doctoral nursing research in the Sigma Europe Region. Findings highlight nursing's pivotal role in addressing healthcare needs through innovative, person-centred, and evidence-informed solutions, and underscore the value of international collaboration in shaping resilient, equitable, and future-ready healthcare systems.
To explore and map the landscape of doctoral nursing research across eight countries.
A scoping review.
This review followed the Joanna Briggs Institute methodology for scoping reviews and included doctoral theses in nursing defended between 2020 and 2023 in Austria, Italy, Israel, the Netherlands, Poland, Portugal, Slovakia and the United Kingdom.
Searches were conducted across 15 national and university repositories (4 national, 11 university) in the eight participating countries.
This review included 431 doctoral nursing theses, the majority of which employed quantitative methodologies and focused on patient populations and healthcare professionals. Key topics included clinical nursing care, quality of care, quality of life, home care, perinatal care and the work environments.
Nursing doctoral research shows progress in healthcare delivery, patient care and education via digital tools, holistic approaches and professional development. Yet gaps persist in mental health, paediatrics and marginalised groups. Limited qualitative/mixed-methods research and weak interdisciplinary collaboration reveal further opportunities.
This review underscores that nursing doctoral research is addressing major healthcare and professional challenges. Nonetheless, the identified gaps emphasise the need for more comprehensive and inclusive research to enhance equity and guide future nursing practices and policies.
This review provides an overview of the scope of doctoral nursing research across eight countries, identifying key trends and research gaps. The findings are expected to inform nursing academia, policymakers, and healthcare professionals by guiding future research priorities, fostering interdisciplinary collaboration, and promoting equitable, patient-centred care practices.
No direct involvement in data collection; one lay reviewer gave feedback on readability and practice implications, informing minor refinements.
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