Systematic Redesign of Trauma-Focused Cognitive Behavioral Therapy (TF-CBT)

Usability will be evaluated with the 10-item Intervention Usability Scale (IUS), which is based closely on the well-validated SUS. Ratings are on a 1 to 5 scale and yield a total score from 0 to 100. Half the items are reverse scored; higher total scores reflect greater usability. The IUS has good inter-item consistency (a = .83) and sensitivity. Research has also demonstrated that the original version of the IUS (the SUS) function similarly, and yields similar scores, for adults and youth as young as 11 years. For youth <11, we will use an adapted lUS, modeled after an adapted version of the SUS for children as young as 7 years old and demonstrating adequate to good reliability.

Engagement will be measured using the Participant Responsiveness Scale (PRS), an adapted version of the 12-item Patient Responsiveness Scale tailored to be developmentally appropriate for children aged 8 and above as well as adults. The PRS measures two factors, Participation and Enthusiasm. The original Patient Responsiveness Scale has demonstrated strong reliability (a = .86) and construct validity.

The Intervention Appropriateness Measure (IAM) is a rigorously developed, pragmatic instrument with strong good internal consistency (a = .87) and test-retest reliability (a = .87).

Adoption is operationalized as the initiation of a clinician's first TF-CBT or S-TF session at any point during study participation. These data will be collected from an online Toolkit that facilitates tracking of services delivered and has been commonly used for large-scale TF-CBT implementation.

Reach will be calculated using adoption data as the percentage of clinician's caseloads receiving TF-CBT or S-TF.

The Child Post-Traumatic Cognitions Inventory (CPTI) is a 25-item measure for youth aged 6-18 that is applicable to a wide range of trauma experiences. Two subscales, (1) Permanent and disturbing change (in response to trauma) and (2) Fragile person in a scary world have been identified. Both subscales have high internal consistency (a = .91 and .87, respectively)and test-retest reliability (r= .78 and .72).

The Emotion Regulation Questionnaire-Child and Adolescent (ERQ-CA) is a 10-item instrument that has demonstrated good construct validity, inter-item consistency (a = .73 - .79), and test-retest reliability (r = .69) across multiple studies for children aged 7 - 18 years.

The Posttraumatic Avoidance Behavior Questionnaire (PABQ) is a 25-item self-report measuring trauma-related avoidance behavior (e.g., avoiding visual trauma reminders, being alone, intimate relationships) on a 4-point Likert scale. The PABQ has good test-retest validity (r = .87 - .78) and convergent validity with PTSD symptom severity (r= .77 - .56).

The Child and Adolescent Trauma Screen-2 (CATS) is checklist administered as a youth self-report and caregiver report that is based on DSM-5 criteria for PTSD and the items directly map onto criteria B (intrusions, a = .80 and .86), C (avoidance, a = .67 and .68), D (negative alterations in cognitions and mood, a = .85 and .87), and E (hyperarousal, a = .74 and .83). Using a set of 15 items, potentially traumatic events or series of events are identified followed by 20 posttraumatic stress symptoms (PTSS) items if at least one potentially traumatic event is evident. Both the youth self-report (a = .92) and caregiver report (a = .94) demonstrate excellent internal consistency. PTSS items are rated on a scale of 0 (never) to 3 (almost always) followed by 5 psychosocial functioning items (yes/no) related to the PTSS. This will be used to initially identify youth for study participation.

The Youth Top Problems (YTP) assessment is an assessment in which youth and caregivers are asked to list the problems they were most concerned about. Upon completion of the list, respondents are asked to assign a severity rating for each problem by answering the questions: how big of a problem is this for you? (0 = not at all to 10 = very, very much). Respondents are then asked to identify which of the problems listed: is the biggest problem right now? Which one is the most important to work on?. Then the second and third most important until 3 top problems are identified. The YTP shows excellent concurrence with standardized assessments (Kappa ranging from .78 to .91), while also adding specificity for treatment targets (41% of caregivers-, and 79% of youth-identified top problems were not identified by an item amongst elevated standardized assessment sub-scales).

For each case, one recording will be randomly selected from each TF-CBT / S-TF treatment phase and coded for fidelity using the Therapy Process Observational Coding System (TPOCS), and the TPOCS-SeRTIFY self-report measure version.

Recorded intervention sessions will be evaluated using the coding system for the Framework for Modifications and Adaptations of Evidence-based interventions (FRAME), the leading method for evaluating the nature of intervention adaptations.

The RCADS-25 is a psychometrically validated tool that screens and monitors anxiety and depression symptoms in 8- to 18-year-old youth through child or parent report using a 4-point Likert scale.

The DSM-5 Level 1 Cross-Cutting Symptom Measure is a 23-item survey that screens for the presence and severity of symptoms spanning 13 psychiatric domains, enabling clinicians to identify trans-diagnostic mental health concerns. This measure is administered as a self-report for youth ages 11 - 17 and completed by a caregiver for youth under the age of 11.

PROMIS is a rigorously developed system of patient-reported outcome measures that enables standardized assessment of physical, mental, and social health across diverse patient populations.