Data collection
AMM
Following an inductive grounded theory approach, ESM unobtrusively observed all MCEP sessions to capture the in-vivo experience of the intervention. Participants were interviewed immediately after their final session to capture their initial responses to the intervention in their own words, and then again two months later to capture the effect of the intervention at the time of their final follow-up with the RCT. Study sessions took place in a classroom cleared of furniture and set up with an area rug, large pillows, and hallway window shades pulled down for privacy.Two nurture specialists, a study coordinator, and ESM were present during all MCEP sessions. ESM audio-recorded, observed, and took notes during the group’s 14 sessions, of which each dyad attended eight (or in two cases, seven). AMM transcribed the recordings and added verbatim dialogue to observation notes if missing. ESM conducted semi-structured in-person interviews (Supplement Files were password-protected and de-identified. File access was granted only to those involved in data analysis (ESM, MCM, and AMM). The study design did not include pilot-testing because it was part of an ongoing RCT. Figure Qualitative sub-study workflow