Table 1 Feasibility questions, assessments and assessment methods
Feasibility Question | How was feasibility assessed? | Assessment methods | When was feasibility assessed? |
|---|---|---|---|
Is it feasible to recruit participants? | Number of families and children referred to the Targeted CAMHS team, documenting reasons for ineligibility or study decline | Recruitment log | From trial open to close. |
It is possible to train therapists to an appropriate level of treatment integrity? | Skill level in delivering MBT was assessed in the MBT and UCC study arms Therapists’ views regarding treatment integrity | MBT-Fostering- Adherence and Competence Scale [MBT-F-ACS; (Wood S, Besser S, Midgley N: MBT-Fostering- Adherence and Competence Scale (MBTF-ACS), unpublished)] Focus groups with targeted team clinicians | During and after intervention period |
Is MBT acceptable and credible? | Monitoring of attendance and drop out of therapy sessions Participants’ and professionals’ views regarding treatment acceptability | Treatment attendance log Semi-structured interviews / focus groups with foster carers, social workers and targeted team clinicians | Intervention period Interviews at final follow-up (24 weeks) |
Is a trial feasible and acceptable? | The extent to which children, carers, and therapists complete study assessments Participants’ views of the study procedures, and facilitators and barriers to participating in the study Withdrawal from treatment, and/or from the study | Completion rate of all measures (see Additional file 1) Semi-structured interviews with foster carers Recruitment log | Final analysis at trial close Interviews at final follow-up (24 weeks) Throughout the trial |
Is it feasible to collect resource use and quality of life data for economic evaluation? | Completion of a) resource use schedule modified for the population of interest and b) health-related quality-of-life assessment tools | Child and Adolescent Service Use Schedule (CA-SUS) [18] and Child Health Utility (CHU-9D) measure of health-related quality of life [19] | Baseline, weeks 12 and 24 |
What is the likely effect size? | The likely effect size for the MBT intervention, compared to UCC | Strengths and Difficulties Questionnaire (SDQ, Goodman and Goodman 2012) [20] | Baseline, weeks 12 and 24 |