Proof-of-Concept Trial of a Positive Psychology Intervention for Caregivers of Patients Undergoing HSCT

The proposed project (PATH-C) entails two phases: 1. Phase one is an open-pilot trial in 5 caregivers of patients undergoing HSCT to refine the PATH intervention. 2. Phase two is single-arm open-pilot trial evaluating the feasibility and acceptability of the PATH intervention in 20 caregivers of patients undergoing HSCT. All participants will be approached in-person at the routine HSCT patient consent clinic visit or, with patient permission, over the phone if the caregiver is not physically present at the consent visit for eligibility determination. Interested participants will be screened based on the inclusion/exclusion criteria and verbal consent will be obtained. Upon consent to participate in the study, participants in both phases will be asked to complete baseline questionnaires either in-person, over the phone, or via a REDCap survey link to participants. After baseline assessments are completed, participants will be given an intervention manual with 9-weekly positive psychology (PP) exercises and an explanation of the exercises and intervention. All participants in Phases 1 and 2 will be asked to complete the 9-weekly PP exercises starting after the baseline questionnaires (i.e., after the patient transplant consent visit) are completed in the pre-transplant phase and to speak with the study interventionist, a trained clinical research coordinator (CRC), weekly. Immediately after the completion of each exercise, participants will rate the ease of exercise completion, overall utility of the exercise, and their current levels of positive affect. After the Week 9 intervention phone session, all participants in both phases will complete another set of self-assessment questionnaires either over the phone, in-person at a routine clinic visit, or via a REDCap survey link emailed to participants. Additionally, participants will be asked to complete a recorded exit interview over the phone. These individual, semi-structured exit interviews will elicit feedback about the intervention (e.g., relevance and applicability of the chosen PP exercises, intervention length, timing, and delivery), study procedures, and questionnaires. Exit interviews will be recorded, transcribed, coded and thematically analyzed. At study completion, we will inquire about participants' potential interest in being contacted about our future studies.