Table 2 Measures of risk and protective factors
Secondary outcomes | Measure description | Time point | |
|---|---|---|---|
Baseline | MU study | ||
Child Risk Factors | Â | Â | |
 Quality of Life | Pediatric Quality of Life Inventory 4.0 - 23-item validated measure for children aged 2 to 18 years. Provides total, physical, and psychosocial health summary scores, with higher scores indicating better health-related quality of life [69]. | P | _ |
 Sleep problem severity | Primary caregiver report of child sleep problems (none, mild, moderate or severe) [70]. | P | P |
 Difficulties withinitiating andmaintaining sleep | Sleep Disturbance Scale for Children (SDSC) –7-item subscale assessing disorders of initiating and maintaining sleep [71]. | _ | P |
 Sleep habits | Self-reported sleep habits – 2-items from the Longitudinal Study of Australian children about the amount and quality of sleep [72]. | _ | C |
 Comorbid Mental Health Problems | Anxiety Disorders Interview Schedule for DSM-IV - diagnostic interview assessing mental health disorders according to DSM-IV criteria [73]. | P | _ |
 Other Comorbidities | Learning difficulties or Autism Spectrum Disorder – parent-report of whether these conditions have been diagnosed by health professional. | P | P |
 Cognitive Functioning | Wechsler Abbreviated Scale of Intelligence™ (WASI™) – Provides an estimated general intellectual ability, based on two subsets, Vocabulary and Matrix Reasoning [74]. | _ | C |
 Working Memory | Wechsler Intelligence Scale for Children – Fourth Edition (WISC-IV) - Digit Span Forwards and Backwards subscale assessing short-term auditory memory [75]. | _ | C |
 Affective Reactivity Index (ARI) | Affective Reactivity Index (ARI) – 7-item measure of chronic irritability [76]. | _ | P,C |
 Substance Use | Substance Use – 6-items assessing alcohol, smoking and cannabis use ever and use in last 12 months. Questions previously used in the Victorian Adolescent Health and Wellbeing Survey [77]. | _ | C |
 Puberty | Puberty Scale – Self-rating scale of pubertal development from pre-pubertal through to post-pubertal (5 mins) [78]. | _ | C |
Parent, Family and School Risk Factors | Â | Â | |
 Mental Health | Depression Anxiety Stress Scale - 21-item measure of adult mental health with clinical cut points for each of the three subscales of depression, anxiety and stress [79]. | P | P |
 Family Functioning | Family Environment Scale – 9-items scale measuring family function/dysfunction [80]. | P | _ |
 School Environment | My School Variables – sector, type, year range, location and index of socio-educational advantage (SEA), [62]. | _ | D |