“…Although there are many examples of qualitative comparison groups that are part of a mixed methods (quantitative, RCT) study (e.g., Chambers et al, 2011; Keeley, West, Tutt, & Nutting, 2014; Patel, Lee, Wheatcroft, Barnes, & Stein, 2005; Rawlings, Brown, Stone, & Reuber, 2018; Watson, Hayes, Coons, & Radford-Paz, 2013), there are much fewer qualitatively driven comparison groups, especially those that compare a group who received an intervention and those who did not. Applying a qualitative comparison group that compares two different groups on the impact of an intervention could help to highlight the key ingredients of an intervention that are making a difference.…”