A clinical and cost-effectiveness trial of a parent group intervention to manage challenging restricted and repetitive behaviours in young children with autism spectrum disorder: study protocol for a randomised controlled trial

Table 1 Time points at which measures and data are collected

Procedure	Screening	Baseline	Treatment phase	Follow-up
Procedure	Screening	Baseline	Weeks 1–8	Week 10	Week 24	Week 52
Informed consent	X
Child and parent demographics*	X				X	X
Eligibility	X
ADOS-2		X
SRS-2		X
CGI-I					X
RBQ-2		X		X	X	X
Teacher RBQ-2		X		X	X	X
Measurement of the target behaviour vignette		X		X	X	X
VABS 3		X			X
Parent self-efficacy questionnaire		X		X	X	X
Autism Parenting Stress Index		X		X	X	X
WEMWBS		X			X	X
Autism Family Experience Questionnaire		X			X	X
Proxy completed CHU9D		X			X	X
EQ-5D-5L		X			X	X
Resource use questionnaire		X			X	X
Time and travel questionnaire		X
Randomisation**		X
Weekly intervention (MRB or Learning About Autism)			X

*Child demographics to include child age, gender, type of nursery/school, diagnosis, current medications, additional diagnoses, ethnicity and previous intervention exposure
*Parent demographics to include level of education, employment status, family structure, attendance at previous courses or interventions relating to children with a diagnosis of ASD
**Randomisation to take place following completion of baseline assessment

ISSN: 1745-6215