The benefits of international volunteering in a low-resource setting: development of a core outcome set

Qualitative narrative analysis and case studies form the majority of the current peer-reviewed literature about the benefits of professional volunteering or international placements for healthcare professionals. These often describe generalised outcomes that are difficult to define or have multiple meanings (such as ‘communication skills’ or ‘leadership’) and are therefore difficult to measure. However, there is an interest from employers, professional groups and individual volunteers in generating metrics for monitoring personal and professional development of volunteers and comparing different volunteering experiences in terms of their impact on the volunteers. In this paper, we describe two studies in which we (a) consolidated qualitative research and individual accounts into a core outcome set and (b) tested the core outcome set in a large group of global health stakeholders. We conducted a systematic review and meta-synthesis of literature to extract outcomes of international placements and variables that may affect these outcomes. We presented these outcomes to 58 stakeholders in global health, employing a Delphi method to reach consensus about which were ‘core’ and which were likely to be developed through international volunteering. The systematic review of 55 papers generated 133 unique outcomes and 34 potential variables. One hundred fifty-six statements were then presented to the Delphi stakeholders, of which they agreed 116 were core to a wide variety of healthcare professional practice and likely to be developed through international experiences. The core outcomes (COs) were both negative and positive and included skills, knowledge, attitudes and outcomes for healthcare organisations. We summarised existing literature and stakeholder opinion into a core outcome set of 116 items that are core to healthcare professional practice and likely to be developed through international experiences. We identified, in the literature, a set of variables that could affect learning outcomes. The core outcome set will be used in a future study to develop a psychometric assessment tool.