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Comment & Response |

Some Important Deficiencies in the Development, Validation, and Reporting of a Prediction Model—Reply

Sarah E. Tevis, MD1; Gregory D. Kennedy, MD, PhD1
[+] Author Affiliations
1Department of Surgery, University of Wisconsin, Madison
JAMA Surg. 2015;150(9):915-916. doi:10.1001/jamasurg.2015.1655.
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In Reply The letter by Cook and Collins focuses on the details of the nomogram equation and promotes the use of the Transparent Reporting of a multivariable prediction model for Individual Prognosis or Diagnosis (TRIPOD) Statement developed by their group.1 We acknowledge that individuals with a background in statistics may be interested in details such as the intercept of the equation on which the nomogram is based; however, the intended readership for this study is practicing surgeons interested in predicting postoperative readmissions. Therefore, we felt that the visual representation as a nomogram would be more meaningful for the JAMA Surgery readership.

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September 1, 2015
Jonathan Alistair Cook, PhD; Gary S. Collins, PhD
1Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Botnar Research Centre, Nuffield Orthopaedic Centre, Oxford, Oxfordshire, England
JAMA Surg. 2015;150(9):915. doi:10.1001/jamasurg.2015.1652.
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