Table 2

Summary of measures

Construct	Measures	Source	T1	T2	T3
Child outcomes
Sleep	Sleep problem prevalence (primary outcome)—Primary caregiver report of child sleep problem (none/mild vs moderate/severe)2	P	●	●	●
	Children's Sleep Habits Questionnaire (CSHQ)—33-item validated measure of disorders of initiating and maintaining sleep.31 Child Sleep Self-Report collected at 6 months only15	P	●	●	●
	Teacher Daytime Sleepiness Questionnaire—10-item validated scale of daytime sleepiness at school39	T	●	●	●
	Sleep Hygiene scale—7-item measure assessing sleep hygiene24	P	●		●
Comorbidity	Anxiety Disorders Interview Schedule for DSM-IV (ADIS-C)—diagnostic interview assessing mental health disorders according to DSM-IV criteria. This is completed with parents over the telephone and has been validated for this purpose27	P	●
ADHD	ADHD Rating Scale IV—18-item validated scale measuring the core symptoms of ADHD30	P, T	●	●	●
Behaviour	Strengths and Difficulties Questionnaire—25 items assessing the following subscales: hyperactivity/inattention, conduct problems, emotional symptoms, peer relationship problems, and prosocial behaviour40	P, T	●	●	●
Irritability	Affective reactivity index (ARI)—6-item validated measure assessing child irritability41	P	●	●	●
School attendance	School attendance over the preceding 3 months2	P	●	●	●
Quality of life	Child Health Utility-9D (CHU-9D)—9-item measure of child quality of life used to calculate quality-adjusted life years. Child report is collected at the 6-month follow-up only42	P, C	●		●
	Pediatrics Quality of Life Inventory 4.0–23-item measure of child total, physical and psychosocial QoL43	P	●		●
Memory	Sleep Suite App—An animated iPad application that includes a continuous performance test to measure sustained attention, and 2 tests of memory consolidation and learning44	C			●
Working Memory	Working Memory Test Battery for Children—The Backward digit span recall subtest is administered as a measure of child working memory45	C			●
Academic functioning	Wide Range Achievement Test 4 (WRAT)—word reading and math computation subtests46	C			●
	NAPLAN—standardised academic tests of reading, writing, language conventions and numeracy. Results can be compared with National or State population results and against the national minimum standard26	L			●
Autism	Social Responsiveness Scale (SRS) Brief—16-item measure of autism spectrum disorder symptoms47	P			●
Parent outcomes
Mental health	Kessler 6 (K6)—6-item validated measure of adult psychological stress48	P	●	●	●
Work attendance	Work attendance over the previous 3 months2	P	●	●	●
Parenting	Parenting—validated scales developed for the Longitudinal Study of Australian Children assessing parenting consistency (6 items) and parental warmth (5 items)49	P	●		●
Family costs	Service use and costs—families report service use over previous 3 months as well as time, travel and out-of-pocket costs associated	P		●	●

C, child-report; L, data linkage; P, parent-report; T, teacher-report; T1, baseline; T2, 3 months postintervention; T3, 6 months postintervention.