A systematic review is a useful method to answer a research question where prior studies have been conducted. A well-designed and executed systematic review can inform policy and/or practice change. It can also identify gaps and generate new research questions. Although the requirements considered essential for conducting a rigorous systematic review are well defined in the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement, the approaches taken to synthesize the data vary. This case study describes the narrative synthesis of heterogeneous quantitative studies and the meta-synthesis of qualitative studies used to answer a complex research question from the consumer perspective. The study design focused on the analysis of consumer data only. As a result, the synthesis of both quantitative data and qualitative data has provided a detailed insight into consumers' unique perspectives and needs. The synthesis approach for both datasets is described, and linkages to key tools and resources to help facilitate this approach are provided. Processes used by the research team to enable effective research governance and collaboration throughout are also detailed.