Validation of Patient-Reported Outcome Measurement Information System for Detection of Posttraumatic Stress in Children and Adolescents Following Procedures for Acute Orthopaedic Trauma

Abstract

OBJECTIVES: The efficiency and validity of the Patient-Reported Outcomes Measurement Information System (PROMIS) surveys were determined for pediatric orthopaedic trauma patients with posttraumatic stress disorder (PTSD) symptoms in a clinic setting. METHODS: Design: Prospective cohort study. Setting: Single-institution, Level I trauma center. Patient Selection Criteria: All consecutive children aged 8–18 years undergoing procedures or surgery for orthopaedic trauma. Outcome Measures and Comparisons: The convergent, divergent, and discriminant validity of the PROMIS Anger and Anxiety computerized adaptive tests (CATs) were evaluated and compared with the previously validated Child PTSD Symptom Scale (CPSS). The efficiency in time to completion of the outcome measures was compared between the CPSS and PROMIS surveys. Cutoffs for increased likelihood of PTSD were established for the PROMIS questionnaires. RESULTS: A total of 233 subjects were included in this study (mean age 13.1 years with SD 2.8 years, 71% male). The majority (51%) of injuries were related to sports, and most (60%) involved the upper extremity. Of those included, 41 patients had high levels of PTSD symptoms on the CPSS (18%; 95% CI, 13.1–23.2%). The CPSS took 182 (interquartile range [IQR] 141–228) seconds versus 52 (IQR 36–84) and 52 (IQR 36–70) seconds for PROMIS Anger and Anxiety CATs, respectively. Convergent validity showed patient scores on both PROMIS instruments significantly correlated with CPSS scores (Anger: P < 0.001, r = 0.51; Anxiety: P < 0.001, r = 0.41). Neither PROMIS score correlated with University of California Los Angeles Activity Score (Anger: r = −0.26; Anxiety: r = −0.22), a functional outcome measure, demonstrating divergent validity. Both PROMIS instruments sufficiently discriminated across PTSD risk groups (Anger P < 0.001; Anxiety P < 0.001). A score of at least 53 on PROMIS Anger or at least 48 on PROMIS Anxiety indicated an increased likelihood of PTSD risk. CONCLUSIONS: PROMIS Anger and Anxiety CATs are efficient and valid for evaluating posttraumatic stress in children following orthopaedic trauma procedures. LEVEL OF EVIDENCE: Diagnostic Level I. See Instructions for Authors for a complete description of levels of evidence.