|Coding algorithms for defining comorbidities in ICD-9-CM and ICD-10 administrative data|
H Quan, V Sundararajan, P Halfon, A Fong, B Burnand, JC Luthi, ...
Medical care, 1130-1139, 2005
|Updating and validating the Charlson comorbidity index and score for risk adjustment in hospital discharge abstracts using data from 6 countries|
H Quan, B Li, CM Couris, K Fushimi, P Graham, P Hider, JM Januel, ...
American journal of epidemiology 173 (6), 676-682, 2011
|New ICD-10 version of the Charlson comorbidity index predicted in-hospital mortality|
V Sundararajan, T Henderson, C Perry, A Muggivan, H Quan, WA Ghali
Journal of clinical epidemiology 57 (12), 1288-1294, 2004
|A modification of the Elixhauser comorbidity measures into a point system for hospital death using administrative data|
C Van Walraven, PC Austin, A Jennings, H Quan, AJ Forster
Medical care, 626-633, 2009
|Exploring physician specialist response rates to web-based surveys|
CT Cunningham, H Quan, B Hemmelgarn, T Noseworthy, CA Beck, ...
BMC medical research methodology 15, 1-8, 2015
|Assessing validity of ICD‐9‐CM and ICD‐10 administrative data in recording clinical conditions in a unique dually coded database|
H Quan, B Li, L Duncan Saunders, GA Parsons, CI Nilsson, A Alibhai, ...
Health services research 43 (4), 1424-1441, 2008
|Dealing with missing data in a multi-question depression scale: a comparison of imputation methods|
FM Shrive, H Stuart, H Quan, WA Ghali
BMC medical research methodology 6, 1-10, 2006
|How to practice person‐centred care: A conceptual framework|
MJ Santana, K Manalili, RJ Jolley, S Zelinsky, H Quan, M Lu
Health Expectations 21 (2), 429-440, 2018
|Validity of information on comorbidity derived from ICD-9-CCM administrative data|
H Quan, GA Parsons, WA Ghali
Medical care, 675-685, 2002
|Comparison of the Elixhauser and Charlson/Deyo methods of comorbidity measurement in administrative data|
DA Southern, H Quan, WA Ghali
Medical care, 355-360, 2004
|Adapting the Charlson Comorbidity Index for use in patients with ESRD|
BR Hemmelgarn, BJ Manns, H Quan, WA Ghali
American Journal of Kidney Diseases 42 (1), 125-132, 2003
|Validity of procedure codes in International Classification of Diseases, 9th revision, clinical modification administrative data|
H Quan, GA Parsons, WA Ghali
Medical care, 801-809, 2004
|Risk adjustment performance of Charlson and Elixhauser comorbidities in ICD-9 and ICD-10 administrative databases|
B Li, D Evans, P Faris, S Dean, H Quan
BMC health services research 8, 1-7, 2008
|Symptomatic in-hospital deep vein thrombosis and pulmonary embolism following hip and knee arthroplasty among patients receiving recommended prophylaxis: a systematic review|
JM Januel, G Chen, C Ruffieux, H Quan, JD Douketis, MA Crowther, ...
Jama 307 (3), 294-303, 2012
|Incidence of primary sclerosing cholangitis: a systematic review and meta‐analysis|
NA Molodecky, H Kareemi, R Parab, HW Barkema, H Quan, RP Myers, ...
Hepatology 53 (5), 1590-1599, 2011
|Physician interpretations and textbook definitions of blinding terminology in randomized controlled trials|
PJ Devereaux, BJ Manns, WA Ghali, H Quan, C Lacchetti, VM Montori, ...
Jama 285 (15), 2000-2003, 2001
|Methods for identifying 30 chronic conditions: application to administrative data|
M Tonelli, N Wiebe, M Fortin, B Guthrie, BR Hemmelgarn, MT James, ...
BMC medical informatics and decision making 15 (1), 1-11, 2016
|Association of postoperative complications with hospital costs and length of stay in a tertiary care center|
NA Khan, H Quan, JM Bugar, JB Lemaire, R Brant, WA Ghali
Journal of general internal medicine 21, 177-180, 2006
|Validation of a case definition to define hypertension using administrative data|
H Quan, N Khan, BR Hemmelgarn, K Tu, G Chen, N Campbell, MD Hill, ...
Hypertension 54 (6), 1423-1428, 2009
|The impact of the electronic medical record on structure, process, and outcomes within primary care: a systematic review of the evidence|
JM Holroyd-Leduc, D Lorenzetti, SE Straus, L Sykes, H Quan
Journal of the American Medical Informatics Association 18 (6), 732-737, 2011