Analyzing implementation of public health interventions: A need for rigor, and the challenges of stakeholder involvement

Objectives. - This article shows how conceptual models can help to develop and evaluate public health inter-ventions. It also reports on the challenges of getting stakeholders involved. Method. - The analysis is based on the reflexive approach applied by the authors during their participation in two public health intervention research (PHIR) projects, in France and in Burkina Faso.Results. - In Paris, PHIR aimed to enable sub-Saharan immigrants to appropriate the existing means of pre-vention and sexual health care and to strengthen their empowerment in view of preserving their health. Eva-luation was carried out using mixed methods. The intervention process theory is based on Ninacs' conceptual model of individual empowerment. The Consolidated Framework For Implementation Research (CFIR) was mobilized a posteriori to analyze the process. PHIR stemmed from collaboration between a research team and two associations. The different stakeholders were involved in the evaluation process, as were, at certain times, persons in highly precarious situations. In Ouagadougou, a community-based dengue vector control intervention was deployed to address an essential but neglected need. As regards evaluation, we opted for a holistic, mixed method approach (effectiveness and process). The contents of the intervention were determi-ned based on tacit knowledge, a community preference survey and solid evidence. The theoretical frame-work of the intervention consisted in an eco-biological model of vector control. The implementation analysis combined an internal assessment of implementation fidelity with an external CFIR process analysis. All stake-holders were involved in the evaluation process.Discussion. - Analysis confirmed not only the value of process evaluations in PHIR, but also the primordial importance of a rigorous approach. Stakeholder involvement is a major challenge to be addressed early in the planning of RISPs; with this in mind, effective and ethically sound assessment mechanisms need to be drawn up. Interdisciplinary evaluative approaches should be preferred, and the use of justified, relevant, and flexible frameworks is highly recommended.Conclusion. - Lessons learned for those wishing to engage in the process evaluation of a public health inter-vention are hereby presented.(c) 2022 Elsevier Masson SAS. All rights reserved.