Two Methodological Approaches to the Integration of Mixed Methods and Case Study Designs: A Systematic Review

Case study has a tradition of collecting multiple forms of data—qualitative and quantitative—to gain a more complete understanding of the case. Case study integrates well with mixed methods, which seeks a more complete understanding through the integration of qualitative and quantitative research. We identify and characterize “mixed methods–case study designs” as mixed methods studies with a nested case study and “case study–mixed methods designs” as case studies with nested mixed methods. Based on a review of published research integrating mixed methods and case study designs, we describe key methodological features and discuss four exemplar interdisciplinary studies.