Qualitative analysis
DISEASE
Non-directive interviews were carried out at the inclusion to explore the participants' experiences regarding their disease, and after 6 months of MBATs to explore the participants' perceived changes associated to the intervention. The interviews were conducted by 4 investigators trained in TPE and 5 medical residents, all of whom had benefited from a 5-day training. These in-depth interviews, which lasted for an hour, respected the rules of confidentiality and anonymity and were recorded to allow a complete verbatim transcript of the responses. The interviews focused on the two following open-ended questions: “After 6 months of MBATs, where are you on your path to live with the disease?” and “In which areas of your life have you seen changes linked to the activities you have performed?”.A qualitative content analysis was undertaken, which involved a continuous inductive analysis carried out to establish categories that go further than the ones based on the initial hypotheses of the DERS, in order to better understand and explain changes in emotional regulation.All interviews (The analysis was conducted according to the following steps: (i) the transcribed interviews were read thoroughly, in order to achieve an overview of data and approach experimental themes; (ii) units of meanings linked to emotional regulation were identified and coded; (iii) coded data was condensed and abstracted within each of the categories, which were simultaneously elaborated, and (iv) the content of each interview was organized between each category [All the 112 interviews were coded in the SPHINX QUALI software. The verbatim are reported within quoting marks and in italics. Modifications made for clarity are indicated within brackets. Translation was made freely from French to English by a non-native speaker.