EMSARN Investigators and Study Coordinators:

P. Daniel Patterson, PhD, NRP (Principal Investigator)    Email:

Matthew D. Weaver, PhD, EMT-P

Henry Wang, MD, MS

Terry Fairbanks, MD, MS

David Hostler, PhD

Michael Hubble, PhD

Francis X. Guyette, MD, MS

Jon Rittenberger, MD, MS

Christian Martin-Gill, MD, MPH

David T. Huang, MD, MPH

Judy Lave, PhD

David Krackhardt, PhD

Robert Arnold, MD

Donald M. Yealy, MD

Charley Warner, RN, NRP

Safety Culture

1. Patterson PD, Huang DT, Fairbanks RJ, Wang HE. The emergency medical services safety attitudes questionnaire. Am J Med Qual. 2010; 25(2):109-115. PMID: 20133519

2. Patterson PD, Huang DT, Fairbanks RJ, Simeone S, Weaver MD, Wang HE. Variation in emergency medical services workplace safety culture. Prehosp Emerg Care. 2010; 14(4):448-460. PMID: 20809688. PMCID: 2935310.

3. Weaver MD, Wang HE, Fairbanks RJ, Patterson PD. Association between EMS Workplace Safety Culture and Safety Outcomes. Prehosp Emerg Care. 2012 Jan-Mar;16(1):43-52. PMID: 21950463.

Sleep Quality and Fatigue

  • Patterson PD, Suffoletto BP, Kupas DF, Weaver MD, Hostler D. Sleep quality and fatigue among prehospital providers. Prehosp Emerg Care. 2010; 14(2):187-193. PMID 20199233. PMCID: 2895322.
  • Patterson PD, Weaver MD, Frank RC, Warner CW, Martin-Gill C, Guyette FX, Fairbanks RJ, Hubble MW, Songer TJ, Callaway CW, Kelsey SF, Hostler D. Association Between Poor Sleep, Fatigue, and Safety Outcomes in Emergency Medical Services Providers. Prehosp Emerg Care. 2011 Oct 24. [Epub ahead of print] PubMed PMID: 22023164.
  • Patterson PD, Weaver MD, Hostler D, Guyette FX, Callaway CW, Yealy DM. The Shift Length, Fatigue, and Safety Conundrum in EMS. Prehosp Emerg Care. 2012 Oct-Dec;16(4):572-576. [Epub ahead of print 2012 July 23]. PMID 22823487.

Turnover and Cost of Turnover in EMS

  • Patterson PD, Jones CB, Hubble MW, Carr M, Weaver MD, Engberg J, Castle N. The longitudinal study of turnover and the cost of turnover in emergency medical services. Prehosp Emerg Care. 2010; 14(2):209-221. PMID: 20199235. PMCID: 2883888.

Teamwork and Conflict in EMS

  • Patterson PD, Arnold RM, Abebe K, Lave JR, Krackhardt D, Carr M, Weaver MD, Yealy DM. Variation in Emergency Medical Technician Partner Familiarity. Health Serv Res. 2011 Aug;46(4):1319-1331. doi: 10.1111/j.1475-6773.2011.01241.x. [Epub 2011 Feb 9]. PMID 21306367.
  • Patterson PD, Weaver MD, Weaver S, Rosen M, Todorova G, Weingart L, Krackhardt D, Lave J, Arnold R, Yealy DM, Salas E. Measuring Teamwork and Conflict among Emergency Medical Technician Personnel. Prehosp Emerg Care. 2012; 16(1):98-108. PMID: 22128909. PMCID: PMC3233978. 

Patient and Provider Safety Outcomes

  • Patterson PD, Lave JR, Martin-Gill C, Weaver MD, Wadas RJ, Arnold RM, Roth RN, Mosesso VN, Guyette FX, Rittenberger JC, Yealy DM. Measuring Adverse Events in Helicopter Emergency Medical Services: Establishing Content Validity. Prehosp Emerg Care. 2014 Jan-Mar;18(1):35-45. [Epub Ahead of Print 2013 Sep 4] PubMed PMID: 24003951.
  • Patterson PD, Weaver MD, Abebe K, Martin-Gill C, Roth RN, Suyama J, Guyette FX, Rittenberger JC, Krackhardt D, Arnold R, Yealy DM, Lave J. Identification of Adverse Events in Ground Transport Emergency Medical Services. Am J Med Qual 2012 Mar-Apr;27(2):139-146. [Epub Ahead of Print 2011 Aug 4]. PMID: 21816967.
  • Patterson PD, Weaver MD, Martin-Gill C, Roth R, Guyette F, Rittenberger J, Suyama J, Suffoletto B, Fairbanks RJ, Hubble M, Hostler D, Wang HE. [Abstract #106] Results from the emergency medical services provider and patient safety inventory tool. Prehosp Emerg Care. 2011; 15(1):104-137. (pages 129-130). Click HERE for link to conference abstract.

Book Chapters

  • Patterson PD, Weaver MD, Hostler D. Occupational Injury Prevention and Management. In: Cone DC, Brice JH, Delbridge TR, Myers JB, editors. Emergency Medical Services: Clinical Practice and Systems Oversight. Second Edition. Chichester, West Sussex; Hoboken: John Wiley & Sons Inc., 2015 pp. 217-221. ISBN: 978-1-118-86530-9. Click HERE for link to purchase copy of textbook.
  • Patterson PD, Weaver MD, Hostler D. EMS Provider Wellness. In: Cone DC, Brice JH, Delbridge TR, Myers JB, editors. Emergency Medical Services: Clinical Practice and Systems Oversight. Second Edition. Chichester, West Sussex; Hoboken: John Wiley & Sons Inc., 2015 pp. 211-216. ISBN: 978-1-118-86530-9.  – January 2015. Click HERE for link to purchase copy of textbook.


  • Bigham B. Patterson PD. Chapter 70: Patient Safety Culture. Pages: 491-499. Second Edition, Volume 1: ​Emergency Medical Services Clinical Practice and Systems Oversight. A publication of the National Association of EMS Physicians in concert with Wiley-Blackwell Publishers. Editors: Cone DC, Brice JH, Delbridge TR, Myers JB. ISBN: 978-1-118-86530-9. Click HERE for link to purchase copy of textbook.