“…QCA itself constitutes an integrative research approach, as it rests among other things on the integration of case-based and other forms of substantive knowledge (Ragin, 2014). Indeed, while being sui generis in a way, it is also fed by several methods and traditions, both on the qualitative (caseoriented) and on the quantitative (mathematical, albeit nonstatistical) sides (Blanchard, Rihoux, & Álamos-Concha, 2017). More specifically, QCA is about case-based evidence, which is compatible with multiple data collection techniques (see Section 3.1), but also about mathematical formalization in the research process.…”