Academic Emergency Medicine, 2004: Emergency Medicine Information Technology [Internet]. 2010 Aug 17 [cited 2013 Jan 15]. Characterizing Waiting Room Time, Treatment Time, and Boarding Time in the Emergency Department Using Quantile Regression Ru Ding MS, Melissa L. McCarthy ScD, Jeffrey S. Desmond MD, Jennifer S. Lee MD, Dominik Aronsky MD, PhD, Scott L. Zeger PhD Article first published online: 29 JUL 2010 DOI: 10.1111/j.1553-2712.2010.00812.x