Table 2 Participant timeline (SPIRIT figure): schedule of enrolment, interventions and assessments

Enrolment:

 Consent for eligibility

F

X

 Eligibility screen

F

X

 Vineland Adaptive Behaviour Scales (VABS) (3rd) [18]. FULL

C

X

 Brief Family Distress Scale

F

X

 Informed consent

F

X

 Contacts data

F

 Randomisation allocation

N/A

X

Assessments:

 Demographic data

F

 Warwick-Edinburgh Mental Well-Being Scale [23]

F

X

X

X

 Hospital Anxiety and Depression scale [24]

F

X

X

X

 EQ-5D-5L [25]

F

X

X

X

 Brief COPE [26]

F

X

X

X

 Child Behaviour Checklist (CBCL) [27]

C

X

X

X

 Paediatric Quality of Life InventoryTM Version 4.0 Generic Core Scales [28]

C

X

X

X

 Happiness of relationship scale [29]

F

X

X

X

 Family APGAR scale [30]

F

X

X

X

 Strengths and Difficulties Questionnaire [31]

F

X

X

X

 Sibling Relationship Questionnaire (revised) (where relevant) [32]

C

X

X

X

 Family Support Scale [33]

F

X

X

X

 Five Minute Speech Sample [34]

F and C

X

X

X

 Parenting Sense of Competence Scale (7 items) [35]

F

X

X

X

 Positive Gains Scale [36]

F

X

X

X

 Disagreement over issues related to child [29], co-parenting [37]

F

X

X

X

 Child-parent relationship scale [38]

F and C

X

X

X

 Parent activities/involvement index

F and C

X

X

X

 Group Cohesion Scale (8 items) [39]

F

X

 Client Service Receipt Inventory [40]

F & C

X

X

X

 Vineland Adaptive Behaviour Scales (VABS) (3rd) [18]. Brief.

C

X

 Participant views on use of routine collected data in future trial

F

X

 Process evaluation-participant interviews

F

X

 Process evaluation—facilitator interviews

N/A

X

 Process evaluation—service provider organisation interviews

N/A

X