Table 1

A priori feasibility criteria overview

Feasibility indicatorSuccess criteriaMeasurement
Recruitment≥10% response rate from eligible participants≥10% of families invited to participate after screening are successfully enrolled in the study
Retention≥90% retention of participants≥90% of enrolled participants successfully complete the study, including outcome measures
Adherence100% attendance to study appointments*
≥85% completion of home programme		All participants complete all eight study appointments*
All participants complete at least 15/18 home exercise sessions
Technology usability≥85% technology usability reported by both youth and parent/guardianYouth and parents each report mean score of ≥72 on adapted TUQ
Satisfaction≥90% satisfaction reported by both youth and parent/guardianYouth and parents each report mean score of ≥29 on CSQ-8

  • *Rescheduling permitted.

  • CSQ-8, 8-Item Client Satisfaction Questionnaire; TUQ, Telehealth Usability Questionnaire.