Comment & Response |

Intraoperative Cholangiography During Cholecystectomy—Reply

Taylor S. Riall, MD, PhD1; Kristin M. Sheffield, PhD1; Yong-Fang Kuo, PhD1
[+] Author Affiliations
1Department of Surgery, University of Texas Medical Branch, Galveston
JAMA. 2013;310(24):2674. doi:10.1001/jama.2013.282657.
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In Reply The purpose of our study was to demonstrate that previous population-based studies reporting a patient-level association between intraoperative cholangiography and reduced common duct injury were subject to unmeasured confounding.13 The causal direction is not clear when using administrative data because the intent of intraoperative cholangiography (to delineate anatomy or to detect injury) is unknown, and cholangiograms that are attempted—but unsuccessful—are not captured.


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December 25, 2013
Marco D. Huesch, MBBS, PhD; John Romley, PhD
1University of Southern California Sol Price School of Public Policy, Los Angeles
2University of Southern California Schaeffer Center for Health Policy and Economics, Los Angeles
JAMA. 2013;310(24):2673-2674. doi:10.1001/jama.2013.282642.
December 25, 2013
David Reed Flum, MD, MPH
1Department of Surgery, University of Washington School of Medicine, Seattle
JAMA. 2013;310(24):2672-2673. doi:10.1001/jama.2013.282648.
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