Victoria Mueller

Emergency departments rarely have time for PTSD screening. PREVIA feeds the transcript of a patient's answer to the routine question "What brought you to the ED?" into a clinically informed ensemble of Llama, Mistral and DeepSeek models arranged in three layers: four clinical dimensions are assessed first, synthesized into a structured summary, then combined with age, sex and trauma type into a 0–100 risk score with a short explanation. Among 145 trauma survivors at two New York City level-1 trauma centers, the ensemble reached AUROC 78.49%±5.75% and sensitivity 95.4%±3.99% for one-month PTSD diagnosis; on 30 randomly selected narratives it scored AUROC 84.39% versus 83.86% for an emergency clinician specialized in PTSD.

Emergency departments rarely have time for PTSD screening. PREVIA feeds the transcript of a patient's answer to the routine question "What brought you to the ED?" into a clinically informed ensemble of Llama, Mistral and DeepSeek models arranged in three layers: four clinical dimensions are assessed first, synthesized into a structured summary, then combined with age, sex and trauma type into a 0–100 risk score with a short explanation. Among 145 trauma survivors at two New York City level-1 trauma centers, the ensemble reached AUROC 78.49%±5.75% and sensitivity 95.4%±3.99% for one-month PTSD diagnosis; on 30 randomly selected narratives it scored AUROC 84.39% versus 83.86% for an emergency clinician specialized in PTSD.