Comment on Ballard DW, Price M, Fung V, et al. Validation of an Algorithm for Categorizing the Severity of Hospital Emergency Department Visits. Med Care. 2010; 48(1)

*Department of Emergency Medicine †Center for Policy and Research in Emergency Medicine ‡Department of Public Health and Preventive Medicine §Department of Medical Informatics and Clinical Epidemiology, Oregon Health & Science University, Portland, OR ∥Leonard Davis Institute of Health Economics, University of Pennsylvania Philadelphia, PA ¶Emergency Medicine Network (EMNet) Boston, MA The following Comment by Dr Robert A. Lowe is republished with its Response by Dr Dustin W. Ballard. This response should have been published in the May 2010 issue in direct response to Dr Lowe. Disclosure: This is an unfunded project. The author declares no conflict of interest. (Republished from: Med Care 2010;48:395. DOI 10.1097/MLR.0b013e3181db53b7.)