William A. Ghali

Coding Algorithms for Defining Comorbidities in ICD-9-CM and ICD-10 Administrative Data

Hude Quan, Vijaya Sundararajan, Patricia Halfon et al. · Medical Care · 2005 · 10.6K citations

Health Professions, Internal Medicine, Clinical Classification Systems +16

New ICD-10 version of the Charlson comorbidity index predicted in-hospital mortality

Vijaya Sundararajan, Toni Henderson, Catherine Perry et al. · Journal of Clinical Epidemiology · 2004 · 2.5K citations

Education, Health Sciences, Internal Medicine +16

Exploring physician specialist response rates to web-based surveys

Ceara Cunningham, Hude Quan, Brenda R. Hemmelgarn et al. · BMC Medical Research Methodology · 2015 · 1K citations · Full text

Medicine, Internal Medicine, Neurosurgery +17

Assessing Validity of ICD‐9‐CM and ICD‐10 Administrative Data in Recording Clinical Conditions in a Unique Dually Coded Database

Hude Quan, Bing Li, L. Duncan Saunders et al. · Health Services Research · 2008 · 892 citations · Full text

Health Professions, Health Informatics, Clinical Classification Systems +13

Dealing with missing data in a multi-question depression scale: a comparison of imputation methods

Fiona M. Shrive, Heather Stuart, Hude Quan et al. · BMC Medical Research Methodology · 2006 · 655 citations · Full text

Public Health, Behavioral Sciences, Psychiatry +17