Trajectory of Post-Traumatic Stress During the First Year after Pediatric Traumatic Brain or Orthopedic Injury

Abstract

Up to 50% of children sustaining physical injury develop post-traumatic stress symptoms (PTSS). Most studies of PTSS have not included patients with traumatic brain injury (TBI); consequently, the influence of injury type and severity on the longitudinal course of PTSS is unclear. To address this gap, we completed a longitudinal prospective cohort study examining the trajectory of self-reported PTSS severity during the first year after TBI or orthopedic injury (OI). Within a biopsychosocial framework, we examined PTSS in relation to injury variables, demographic characteristics, and pre-injury child and family functioning. Patients ages 9–15 years with TBI or OI were recruited from two level I pediatric trauma centers. Online surveys were completed as soon as possible following injury (mdn = 8 days). Caregivers rated pre-injury family, sociodemographic, and child characteristics. Follow-up surveys assessing children’s self-reported PTSS using the Children’s PTSD Symptom Scale (CPSS) were scheduled 3,6, and 12 months after injury. English-speaking families completed surveys either online or by telephone interview; Spanish-speaking families were interviewed. Baseline surveys were completed by 303 families; 265 (87%) completed at least 1 follow-up and comprised the cohort. General linear mixed models examined the influence of injury group and severity, age, sex, and time of assessment on CPSS scores. Pre-injury estimates of child and family functioning were examined as predictors in supplemental models. Participants (72% boys, mean [SD] age 12.7 [1.9] years) included 204 with TBI (76 mild, 82 complicated-mild/moderate, 46 severe) and 61 with OI. Relative to OI, patients with TBI had significantly elevated mean CPSS scores at 3 (3.7 points, 95% confidence intervals [CI]: 1.1, 6.3); 6 (3.2, 95% CI: 0.7, 5.7) and 12 months (2.3, 95% CI: 0.1, 4.5). The primary model indicated that TBI severity had a nonlinear relation with CPSS. Mild TBI (mTBI) had the highest mean scores; with significant differences relative to OI at 3 (4.6 points, 95% CI: 1.6, 7.6); 6 (5.7, 95% CI: 2.7, 8.6) and 12 months (3.2, 95% CI: 0.6, 5.8). This model also revealed that adolescent females had higher CPSS scores than children or adolescent males. Differences relative to younger males at 6 and 12 months were 4.9 (95% CI: 1.6, 8.3) and 5.0 points (95% CI: 2.1, 8.0). In supplemental models, higher symptom burden was associated with poorer baseline family functioning and with higher levels of children’s pre-injury anxiety, affective problems, and conduct problems. PTSS persisted for a significant minority of patients with TBI across the first year of recovery, particularly those with mTBI. Screening should emphasize risk factors to target patients with the greatest need for trauma-focused intervention. Cost-effective, scalable, evidence-based trauma-focused interventions are essential to meet American College of Surgeons standards to provide psychological screening and treatment to children sustaining PTSS.