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Machine learning model effectively predicts PTSD after motor vehicle accidents, JAMA study.

Written By : Dr. Shivi Kataria |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 21 Sept 2021 3:30 AM  |  Updated On 21 Sept 2021 3:31 AM
Machine learning model effectively predicts PTSD after motor vehicle accidents, JAMA study.
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Is it possible to predict which patients will have posttraumatic stress disorder (PTSD) or major depressive episode (MDE) 3 months after presenting to an emergency department (ED) because of a motor vehicle collision? A recent study by Hannah N. Ziobrowski et al., published in JAMA Psychiatry proposes a prediction tool based on ED reports after a motor vehicle collision to predict PTSD or MDE 3 months later.

Adverse post traumatic neuropsychiatric sequel (APNS) of traumatic experiences have a substantial societal burden. Although PTSD is the most frequently studied APNS, MDE is also common. Many people who develop these APNS are evaluated in EDs shortly after their traumas, making preventive interventions possible.

The Advancing Understanding of Recovery After Trauma (AURORA) study was a longitudinal study that examined adverse posttraumatic neuropsychiatric sequalae among patients who presented in the immediate aftermath of a traumatic experience. The 1003 patients considered in this diagnostic/prognostic report completed 3-month assessments.

Each patient received a baseline ED assessment along with follow-up self-report surveys 2 weeks, 8 weeks, and 3 months later. An ensemble machine learning method was used to predict 3-month PTSD or MDE from baseline information. The PTSD Checklist for DSM-5 was used to assess PTSD and the Patient Reported Outcomes Measurement Information System Depression Short-Form 8b to assess MDE.

Out of 1003 patients that were included in this study, a total of 274 patients (weighted 26.6%) met criteria for 3-month PTSD or MDE. An ensemble machine learning model restricted to 30 predictors estimated in a training sample had good prediction accuracy and calibration; in an independent test sample.

Patients in the top 30% of predicted risk accounted for 65% of all 3-month PTSD or MDE, with a mean (SE) positive predictive value of 58.2% (6.4%) among these patients at high risk. The most important predictors in terms of Shapley Additive Explanations values were symptoms of anxiety sensitivity and depressive disposition, psychological distress in the 30 days before motor vehicle collision, and peritraumatic psychosomatic symptoms.

This study found that a parsimonious model that predicts 3-month PTSD or MDE after MVC can be developed using a battery of questions that could be delivered in approximately 10 minutes. The model had good AUC and calibration and captured close to two-thirds of all patients who developed 3-month PTSD or MDE in the top 30% of the predicted risk distribution.

These results suggest that if cost-effective preventive interventions are developed, identification of patients in the ED who are at high risk for treatment targeting may be possible.

Source: JAMA Psychiatry: doi:10.1001/jamapsychiatry.2021.2427


post‐traumatic stress disordermajor depressive episodeprediction tool
Dr. Shivi Kataria
Dr. Shivi Kataria

    M.B.B.S, M.D. Psychiatry

    M.B.B.S, M.D. Psychiatry (Teerthanker Mahavir University, U.P.) Currently working as Senior Resident in Department of Psychiatry, Institute of Human Behaviour and Allied Sciences (IHBAS) Dilshad Garden, New Delhi. Actively involved in various research activities of the department.

    Dr. Kamal Kant Kohli
    Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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