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Table 2 Study measures

From: Does the treatment of anxiety in children with Attention-Deficit/Hyperactivity Disorder (ADHD) using cognitive behavioral therapy improve child and family outcomes? Protocol for a randomized controlled trial

Construct Measure Sourcea T1b T2c T3d
Primary Outcome
 Anxiety diagnoses Anxiety Disorders Interview Schedule for Children V: Separation, Social, & Generalised Anxiety Disorder [27]. P x x x
Secondary Outcomes
 Anxiety symptoms and impact Spence Children’s Anxiety Scale: Child (44-item) and parent (38-item) reported anxiety symptoms [31]. P, C x x x
School Anxiety Scale: 16-items assessing anxiety symptoms at school [32]. T x x x
Child’s Anxiety Life Interference Scale: Child (9-items) and parent (16-items) report [33]. P, C x x x
 ADHD ADHD Rating Scale IV: 18-item validated scale measuring the core symptoms of ADHD [26]. P, T x x x
 Behavior Strengths and Difficulties Questionnaire: 25-items assessing child behavior and peer problems [34]. P, T, C x x x
 Irritability Affective Reactivity Index: A 6-item validated measure assessing child irritability [35]. P x x x
 QoL Child Health Utilities Index Nine Dimension: Preference-based measure of health-related QoL [36, 37]. P, C x x x
 Sleep Single item primary caregiver report of whether the child’s sleep is a problem (none, mild, moderate or severe) [38]. P x x x
 School attendance Number of days late/missed [38]. P x x x
 Cognitive function NIH Toolbox Cognition Battery: Computer- administered assessment of cognitive and executive function, attention, episodic/working memory, and processing speed [39]. D x x x
 Parent mental health Kessler 6 (K6): A 6-item validated measure of adult psychological stress resulting in a total score range from no distress to severe distress [40]. P x x x
 Parenting Parenting behavior: Scales assessing parenting consistency (6-items) and warmth (6-items) [41]. P x x x
 Work attendance Number of days late/missed [38]. P x x x
  1. a P = parent report, T = teacher report, C = child report (completed face-to-face), D = direct assessment; b T1 = baseline; c T2 = 5 months post-randomisation; d T3 = 12 months post-randomisation