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PERSIAN Traffic Safety and Health Cohort: a study protocol on postcrash mental and physical health consequences
  1. Homayoun Sadeghi-Bazargani1,
  2. Nasrin Shahedifar1,2,
  3. Mohammad Hossein Somi3,
  4. Hossein Poustchi4,
  5. Shahrzad Bazargan-Hejazi5,
  6. Mohammad Asghari Jafarabadi1,6,
  7. Vahideh Sadeghi7,
  8. Mina Golestani1,
  9. Faramarz Pourasghar8,
  10. Iraj Mohebbi9,
  11. Sajjad Ahmadi10,
  12. Ali Reza Shafiee-Kandjani1,
  13. Alireza Ala11,
  14. Salman Abdi1,
  15. Mahdi Rezaei1,
  16. Mostafa Farahbakhsh12
  1. 1 Road Traffic Injury Research Center, Tabriz University of Medical Sciences, Tabriz, Iran (the Islamic Republic of)
  2. 2 Injury Epidemiology and Prevention Research Group, Turku Brain Injury Center, Turku University Hospital and University of Turku, Turku, Finland
  3. 3 Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran (the Islamic Republic of)
  4. 4 Liver and Pancreatobiliary Diseases Research Center, Digestive Disease Research Institute, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran (the Islamic Republic of)
  5. 5 College of Medicine, Charles Drew University of Medicine and Science, Los Angeles, California, USA
  6. 6 Department of Statistics and Epidemiology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran (the Islamic Republic of)
  7. 7 Health Services Management Department, School of Management and Medical Informatics, Tabriz University of Medical Sciences, Tabriz, Iran (the Islamic Republic of)
  8. 8 Department of Health Policy and Management, School of Management and Medical Informatics, Tabriz University of Medical Sciences, Tabriz, Iran (the Islamic Republic of)
  9. 9 Department of Occupational Medicine, Social Determinants of Health Research Center, Urmia University of Medical Sciences, Urmia, Iran (the Islamic Republic of)
  10. 10 Emergency Medicine Research Team, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
  11. 11 Emergency and Trauma Care Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
  12. 12 Research Center of Psychiatry and Behavioural Sciences, Tabriz University of Medical Sciences, Tabriz, Iran (the Islamic Republic of)
  1. Correspondence to Dr Homayoun Sadeghi-Bazargani, Road traffic Injury Research Center, Tabriz University of Medical Sciences, Tabriz 5167846311, East Azerbaijan, Iran (the Islamic Republic of); homayoun.bazargani{at}gmail.com; Nasrin Shahedifar, Road traffic Injury Research Center, Tabriz University of Medical Sciences, Tabriz 5167846311, East Azerbaijan, Iran (the Islamic Republic of); swshahedi{at}gmail.com

Abstract

Background Cohort studies play essential roles in assessing causality, appropriate interventions. The study, Post-crash Prospective Epidemiological Research Studies in IrAN Traffic Safety and Health Cohort, aims to investigate the common health consequences of road traffic injuries (RTIs) postcrash through multiple follow-ups.

Methods This protocol study was designed to analyse human, vehicle and environmental factors as exposures relating to postcrash outcomes (injury, disability, death, property damage, quality of life, etc). Population sources include registered injured people and followed up healthy people in precrash cohort experienced RTIs. It includes four first-year follow-ups, 1 month (phone-based), 3 months (in-person, video/phone call), 6 and 12 months (phone-based) after crash. Then, 24-month and 36-month follow-ups will be conducted triennially. Various questionnaires such as Post-traumatic Stress Disorder Questionnaire, Patient Health Questionnaire, WHO Disability Assessment Schedules, Cost-related Information, etc are completed. Counselling with a psychiatrist and a medical visit by a practitioner are provided accompanied by extra tools (simulator-based driving assessment, and psychophysiological tests). Through preliminary recruitment plan, 5807, 2905, 2247 and 1051 subjects have been enrolled, respectively at the baseline, first, second and third follow-ups by now. At baseline, cars and motorcycles accounted for over 30% and 25% of RTIs. At first follow-up, 27% of participants were pedestrians engaged mostly in car crashes. Around a fourth of injuries were single injuries. Car occupants were injured in 40% of collisions.

Discussion The study provides an opportunity to investigate physical-psychosocial outcomes of RTIs, predictors and patterns at follow-up phases postinjury through longitudinal assessments, to provide advocates for evidence-based safety national policy-making.

  • mental health
  • epidemiology
  • cohort study
  • longitudinal
  • functional outcome
  • quality of life

Data availability statement

Data are available upon reasonable request. Access to data The access to the relevant and confidential data from this study is high on the agenda after satisfying legal requirements, ethical principles and protecting personal privacy. We welcome exchange of ideas on the research, and proposals to add to the study. Those interested can contact Dr. Homayoun Sadeghi-Bazargani (PI). The applications will be reviewed upon approval by the research council and the regional ethics committee of Tabriz University of Medical Sciences. The study website is https://cohortsafety.tbzmed.ac.ir/.

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Data availability statement

Data are available upon reasonable request. Access to data The access to the relevant and confidential data from this study is high on the agenda after satisfying legal requirements, ethical principles and protecting personal privacy. We welcome exchange of ideas on the research, and proposals to add to the study. Those interested can contact Dr. Homayoun Sadeghi-Bazargani (PI). The applications will be reviewed upon approval by the research council and the regional ethics committee of Tabriz University of Medical Sciences. The study website is https://cohortsafety.tbzmed.ac.ir/.

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Footnotes

  • HS-B and NS are joint first authors.

  • HS-B and NS contributed equally.

  • Correction notice The first instance has of RTCs has been updated with the expansion 'road traffic crashes' for clarity.

  • Contributors HS-B, MHS and HP were involved in conception and design of the study. HS-B, MHS, HP, SAB-H and MF worked on the validation of project. HS-B, MR and FP involved in software and data curation. HS-B oversaw the execution, supervised the project and acquired funding. IM, SA, ARS-K and AA provided resources. HS-B and NS administered the project, processed the register data, performed the analysis and wrote original article. SAB-H, VS, MG, FP, IM, SA, ARS-K, AA, SA and MF revised the manuscript critically for important intellectual content. All authors worked on interpreting the results and gave final approval of the version to be published.

  • Funding It is also certified that the prospective project receives financial support of Tabriz University of Medical Sciences, Iranian Ministry of Health and Medical Education (grant number 63795).

  • Competing interests None declared.

  • Patient and public involvement Patients and/or the public were not involved in the design, or conduct, or reporting, or dissemination plans of this research.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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