Use of the Modified Frailty Index in the American College of Surgeons National Surgical Improvement Program Database: Highlighting the Problem of Missing Data
JAMA Surg. 2017 Feb 1;152(2):205-207.
doi: 10.1001/jamasurg.2016.3479.
1 Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland.
2 Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland2Department of Surgery, The Ohio State University Wexner Medical Center, Columbus3Deputy Editor, JAMA Surgery.