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. 2019 Jul 12;4(1):e000336. doi: 10.1136/tsaco-2019-000336

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© Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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Variation of MRI use for cervical spine clearance in obtunded, blunt trauma patients across level 1 and 2 trauma centers in the National Trauma Data Bank (NTDB). The variation of use of MRI among 181 hospitals (45.8% of included hospitals) had at least one obtunded, blunt trauma patient who receive a spine MRI. Each vertical bar represents the 95% CI around the proportion of included patients receiving MRI at each individual hospital. The red line shows the overall mean proportion of MRI for the entire cohort.