PTSD risk significantly predicted PTSS and pain characteristics 1 month later. The highest pain score predicted future PTSS and several pain characteristics but no longer had predictive value for pain-related outcomes when combined with PTSD risk. These results indicate that risk factors for PTSD are stronger predictors than pain-related risk factors in predicting pain outcomes. Addressing PTSD risk, as well as pain intensity during hospitalization, may result in improved outcomes for children with unintentional injury.