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Comment & Response |

Predicting Venous Thromboembolism in Pediatric Trauma Patients—Reply

Christopher R. Connelly, MD1; Amy Laird, PhD2; Jennifer M. Watters, MD1
[+] Author Affiliations
1Division of Trauma, Critical Care, and Acute Care Surgery, Department of Surgery, Oregon Health & Science University, Portland
2Division of Biostatistics, Department of Public Health & Preventive Medicine, Oregon Health & Science University, Portland
JAMA Surg. 2016;151(9):882. doi:10.1001/jamasurg.2016.0482.
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In Reply We would like to thank Kalakoti and colleagues1 for their insightful comments and careful review of our article, in which we acknowledge a variety of potential sources of bias. We further recognize that a complete case analysis may also introduce bias, and we appreciate the opportunity to clarify our approach to missing data. For most of the variables considered, information was available for all participants. If no indication of an event or injury was present in the National Trauma Data Bank data set, we assumed that it did not occur. This practice is common in other risk models, such as the fracture risk assessment tool developed by the World Health Organization.2 Therefore, complete information on venous thromboembolism (VTE), intubation, intensive care unit admission, transfusion, central venous catheter, pelvic or lower-extremity fracture, major surgery, and patient age was available (only patients who were documented to be younger than 18 years of age were included).


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September 1, 2016
Piyush Kalakoti, MD; Christina Notarianni, MD; Anil Nanda, MD, MPH
1Department of Neurosurgery, Neurosurgery, Louisiana State University Health Sciences Center, Shreveport
JAMA Surg. 2016;151(9):881-882. doi:10.1001/jamasurg.2016.0481.
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