case_images: PMC6910739_01
case_images: Types of case study designs.
case_images: fmch-2018-000074f01.jpg
case_images: PMC6910739_01_fmch-2018-000074f01.jpg
case_images: F1
case_images: Figure 1 illustrates these four types of design using a hypothetical example of a programme evaluation.