| 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 43 (11), 1130-1139, 2005 | 11345 | 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 | 6063 | 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 | 2659 | 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 47 (6), 626-633, 2009 | 2334 | 2009 |
| 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 | 1282 | 2018 |
| 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), 32, 2015 | 1138 | 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 | 1006 | 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), 57, 2006 | 923 | 2006 |
| Validity of information on comorbidity derived from ICD-9-CCM administrative data H Quan, GA Parsons, WA Ghali Medical care 40 (8), 675-685, 2002 | 711 | 2002 |
| Comparison of the Elixhauser and Charlson/Deyo methods of comorbidity measurement in administrative data DA Southern, H Quan, WA Ghali Medical care 42 (4), 355-360, 2004 | 678 | 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 | 619 | 2003 |
| Incidence of celiac disease is increasing over time: a systematic review and meta-analysis JA King, J Jeong, FE Underwood, J Quan, N Panaccione, JW Windsor, ... Official journal of the American College of Gastroenterology| ACG 115 (4 …, 2020 | 556 | 2020 |
| 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), 31, 2015 | 444 | 2015 |
| Validity of procedure codes in International Classification of Diseases, 9th revision, clinical modification administrative data H Quan, GA Parsons, WA Ghali Medical care 42 (8), 801-809, 2004 | 416 | 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), 12, 2008 | 402 | 2008 |
| 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 | 388 | 2011 |
| 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 (2), 177-180, 2006 | 387 | 2006 |
| 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 | 384 | 2012 |
| 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 | 363 | 2009 |
| 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 | 348 | 2001 |
