Table 4.

Clinical and technical modifications made to EJDeR and refinements to ENGAGE study procedures to be used in the CHANGE trial.

Acceptability and feasibility of EJDeR	Clinical and technical modifications made to EJDeR
Support and guidance	Reduction of the Portal handbook text
	Provision of clinical and technical information to e-therapists in the same handbook
	Provision of technical supervision to e-therapists
	Provision of additional training and practice in how to use structured support protocols in a flexible way
	Provision of additional training on how to engage and motivate inactive parents
	Translation of structured support protocols into Swedish
	Provision of an additional follow-up support session via telephone or video-conferencing to parents
Content of EJDeR	Provision of psychoeducation and techniques to manage post-traumatic stress symptoms
	Clarification of the rationale for LICBT techniques in the intervention and e-therapist training materials
	Provision of information and signposting for difficulties parents may experience not targeted by the intervention
Acceptability and feasibility of study procedures	Refinements to ENGAGE study procedures to be used in the CHANGE trial
Recruitment and training	Recruitment of part-time employed therapists to facilitate guiding large parent caseloads, as opposed to psychology programme students
	Delivery of the training program in Swedish
	Provision of additional Portal training
	Provision of additional training on providing weekly guidance via written messages via the Portal
Retention	Development of an enhanced e-therapist intervention management system, i.e. being able to see parents’ last log-in time and date and intervention view and provide access to relevant modules
	Development of an enhanced e-therapist communication system to enable parents to receive all online communication in the same place
	Improvement of video-conferencing system stability and quality