Selected Publications
Research Publications
Population & Administrative Data ResearchElectronic Medical Records ResearchArtificial Intelligence & Advanced MethodsGlobal Classification Systems & ICD Methods
Population & Administrative Data Research
24 PapersClick to expand
Impact of COVID-19 on incidence and trends of adverse events among hospitalised patients in Calgary, Canada
Wu G, Eastwood CA, Cheligeer C, Southern DA, Zeng Y, Ghali WA, Bakal JA, Boussat B, Flemons W, Forster A, Xu Y, Quan H.
BMJ Quality & Safety • 2026
Deriving ICD-10 codes for patient safety indicators for large-scale surveillance using administrative hospital data
Southern DA, Burnand B, Droesler SE, Flemons W, Forster AJ, Gurevich Y, Harrison J, Quan H, Pincus HA, Romano PS, Sundararajan V, Kostanjsek N, Ghali WA.
Medical Care • 2017
Avoidable hospitalizations in persons with rheumatoid arthritis
Contreras DG, Barber CEH, Aviña-Zubieta JA, Quan H, Lee S, King JA, Barnabe C.
Arthritis Care & Research • 2025
Impacts of home care investments in Alberta
Jajszczok M, Eastwood CA, Lu M, Cunningham C, Quan H.
Healthcare Policy • 2025
Coding algorithms for defining comorbidities in ICD-9-CM and ICD-10 administrative data
Quan H, Sundararajan V, Halfon P, Fong A, Burnand B, Luthi JC, Saunders LD, Beck CA, Feasby TE, Ghali WA.
Medical Care • 2005
Assessing validity of ICD-9-CM and ICD-10 administrative data in recording clinical conditions in a unique dually-coded database
Quan H, Li B, Saunders LD, Parsons GA, Nilsson CI, Alibhai A, Ghali WA for IMECCHI.
Health Services Research • 2008
A modification of the Elixhauser comorbidity measures into a point system for hospital death using administrative data
Van Walraven C, Austin PC, Jennings A, Quan H, Forster AJ.
Medical Care • 2009
Validation of a case definition to define hypertension using administrative data
Quan H, Khan N, Hemmelgarn BR, Tu K, Chen G, Campbell N, et al.
Hypertension • 2009
Updating and validating a chronic disease index for risk adjustment in hospital discharge abstracts using data from six countries
Quan H, Li B, Couris CM, Fushimi K, Graham P, Hider P, Januel JM, Sundararajan V for the IMECCHI investigators.
American Journal of Epidemiology • 2011
Methods for identifying 30 chronic conditions: application to administrative data
Tonelli M, Wiebe N, Fortin M, Guthrie B, Hemmelgarn BR, James M, Klarenbach S, Lewanczuk R, Manns BJ, Ronksley P, Sargious P, Strauss S, Quan H.
BMC Medical Informatics and Decision Making • 2015
Considerations for selecting and implementing comorbidity indices when using secondary data sources
Soos B, Williamson T, McBrien K, Wiebe S, Tonelli M, Southern DA, Eastwood CA, Li B, Quan H, Ronksley P.
International Journal of Population Data Science • 2025
Developing an adapted Charlson comorbidity index for ischemic stroke outcome studies
Hall RE, Porter J, Quan H, Reeves MJ.
BMC Health Services Research • 2019
Improved accuracy of comorbidity coding over time after the introduction of ICD-10 administrative data
Januel JM, Luthi JC, Quan H, Borst F, Taffe P, Ghali WA, Burnand B.
BMC Health Services Research • 2011
Mitigating imperfect data validity in administrative data patient safety indicators: a method for estimating true adverse event rates
Boussat B, Quan H, Labarere J, Southern DA, Couris CM, Ghali WA.
International Journal for Quality in Health Care • 2021
Deriving ICD-10 codes for patient safety indicators for large-scale surveillance using administrative hospital data
Southern DA, Burnand B, Droesler SE, Flemons W, Forster AJ, Gurevich Y, Harrison J, Quan H, Pincus HA, Romano PS, Sundararajan V, Kostanjsek N, Ghali WA.
Medical Care • 2017
Development of data quality indicators for improving hospital ICD-coded health data quality globally
Otero-Varela L, Sandhu N, Walker RL, Southern DA, Quan H, Eastwood CA.
Medical Care • 2024
Development and validation of data quality rules in administrative health data using association rule mining
Peng M, Lee S, D'Souza AG, Doktorchik C, Quan H.
BMC Medical Informatics and Decision Making • 2020
Health data governance for research use in Alberta
Sandhu N, Whittle S, Southern DA, Li B, Youngson E, Bakal JA, McLeod C, Hilderman L, Williamson TS, Cheligeer K, Walker R, Kaul P, Quan H, Eastwood C.
International Journal of Population Data Science • 2023
Validated administrative data based ICD-10 algorithms for chronic conditions: a systematic review
Kuang A, Xu C, Southern DA, Sandhu N, Quan H.
Journal of Epidemiology and Population Health • 2024
Validity of ICD-10 codes for COVID-19 patients with hospital admissions or ED visits in Canada
Wu G, D'Souza AG, Quan H, Southern DA, Youngson E, Williamson T, Eastwood C, Xu Y.
BMJ Open • 2022
Development and validation of case-finding algorithms for recurrence of breast cancer using routinely collected administrative data
Xu Y, Kong S, Cheung WY, Bouchard-Fortier A, Dort JC, Quan H, Quan ML.
BMC Cancer • 2019
Validation of a case definition for depression in administrative data against primary chart data
Doktorchik C, Patten S, Eastwood C, Peng M, Chen G, Beck CA, Quan H.
BMC Psychiatry • 2019
Real-world use and outcomes of SGLT2 inhibitors in adults with diabetes and heart failure
Butalia S, Wen C, Sigal R, Senior P, Quan H, Chu LM, Yeung RO, Kaul P.
Canadian Journal of Diabetes • 2024
Variation in testing for and incidence of celiac autoimmunity in Canada
King JA, Bakal JA, Li B, Whitten TA, Gidrewicz D, Turner JM, van Zanten SV, Huynh HQ, Heitman SJ, Shaheen AA, Quan H, Godley J, Underwood FE, Hracs L, Bergman D, Ludvigsson JF, Lebwohl B, Benchimol EI, Williamson T, Kaplan GG.
Gastroenterology • 2023
Global Classification Systems & ICD Methods
8 PapersClick to expand
Applying the hospital administrative data quality scoring tool in 15 countries
Sandhu N, Whittle S, Otero Varela L, Southern D, Eastwood CA, Quan H.
Health Information Management Journal • 2025
International Classification of Diseases clinical coding training: an international survey
Otero Varela L, Doktorchik C, Wiebe N, Southern DA, Knudsen S, Mathur P, Quan H, Eastwood CA.
Health Information Management Journal • 2022
Exploring the differences in ICD and hospital morbidity data collection features across countries
Otero Varela L, Doktorchik C, Wiebe N, Quan H, Eastwood C.
BMC Health Services Research • 2021
Applying an ICD-10 to ICD-11 mapping tool to identify causes of death codes in an Alberta dataset
Doktorchik C, Southern DA, King JA, Quan H.
Population Health Metrics • 2024
Field testing a new ICD coding system: methods and early experiences with ICD-11 Beta Version 2018
Eastwood CA, Southern DA, Khair S, Doktorchik C, Cullen D, Ghali WA, Quan H.
BMC Research Notes • 2022
Coding mechanisms for main condition in ICD-11
Quan H, Steinum O, Southern DA, Ghali WA.
BMC Medical Informatics and Decision Making • 2025
A World Health Organization field trial assessing a proposed ICD-11 framework for classifying patient safety events
Forster AJ, Bernard B, Drösler SE, Gurevich Y, Harrison J, Januel JM, Romano PS, Southern DA, Sundararajan V, Quan H, Vanderloo SE, Pincus HA, Ghali WA.
International Journal for Quality in Health Care • 2017
Enhanced capture of healthcare-related harms and injuries in ICD-11
Southern DA, Pincus HA, Romano PS, Burnand B, Harrison J, Forster AJ, Moskal L, Quan H, Drösler SE, Sundararajan V, Collin C, Gurevich Y, Brien SE, Kostanjsek N, Üstün B, Ghali WA.
International Journal for Quality in Health Care • 2016
Artificial Intelligence & Advanced Methods
7 PapersClick to expand
FedWeight: Mitigating covariate shift of federated learning on electronic health records data through patients re-weighting
Zhu H, Bai J, Li N, Li X, Li D, Buckeridge D, Li Y.
npj Digital Medicine • 2025
Privacy-preserving federated data access and federated learning: improved data sharing and AI model development in transfusion medicine
Li N, Lewin A, Ning S, Waito M, Zeller MP, Tinmouth A, Shih AW; Canadian Transfusion Trials Group.
Transfusion • 2025
Utilizing large language models for detecting hospital-acquired conditions: an empirical study on pulmonary embolism
Cheligeer C, Southern DA, Yan J, Wu G, Pan J, Lee S, Martin EA, Jafarpour H, Eastwood CA, Zeng Y, Quan H.
Journal of the American Medical Informatics Association • 2025
Preprocessing narrative texts in electronic medical records to identify hospital adverse events: a scoping review
Jafarpour H, Wu G, Cheligeer CK, Yan J, Xu Y, Southern DA, Eastwood CA, Zeng Y, Quan H.
Artificial Intelligence in Medicine • 2025
Unsupervised clustering for sepsis identification in large-scale patient data
Li N, Riazi K, Pan J, Thavorn K, Ziegler J, Rochwerg B, Quan H, Prescott HC, Dodek PM, Li B, Gervais A, Garland A.
Intensive Care Medicine Experimental • 2025
BERT-based neural network for inpatient fall detection from electronic medical records
Cheligeer C, Wu G, Lee S, Pan J, Southern DA, Martin EA, Sapiro N, Eastwood CA, Quan H, Xu Y.
JMIR Medical Informatics • 2024
Machine learning patient-specific prediction of heart failure hospitalization using cardiac MRI-based phenotype and electronic health information
Cornhill A, Dykstra S, Satriano A, Labib D, Mikami Y, Flewitt J, Rivest S, Sandonato R, Howarth AG, Lydell C, Eastwood C, Quan H, Fine N, Lee J, White JA.
Frontiers in Cardiovascular Medicine • 2022
Electronic Medical Records Research
10 PapersClick to expand
How does the mapped ICD data in an EHR system compare to the hospital DAD data in Alberta, Canada?
Sandhu N, Onos D, Li B, Southern DA, Bakal JA, Shaheen AA, Tower G, Addison K, Whittle S, Quan H.
BMC Health Services Research • 2025
Comparing the quality of primary care electronic health record data in Australia and Canada
Thuraisingam S, Marasinghe DH, Barrick K, Aghajafari F, Manski-Nankervis JA, Dowsey MM, Quan H, Williamson T, Garies S.
Journal of Medical Internet Research • 2024
Use of the Epic Electronic Health Record system for healthcare research: a scoping review
Chishtie J, Sapiro N, Wiebe N, Rabatach L, Lorenzetti D, Leung A, Rabi D, Quan H, Eastwood C.
JMIR Preprints • 2023
Precipitating factors and avoidability of 7-day readmissions after hospitalization for heart failure
Eastwood CA, VanKampen N, Fox D, Doktorchik C, Walker RL, Quan H, Howlett J, King-Shier KM.
medRxiv • 2025
Heart failure readmission risk factors: a modified Delphi panel study
Wiebe N, Eastwood CA, Lee S, Martin EA, Walker RL, Leung A, Howlett J, Quan H.
CJC Open • 2025
Automated extraction of weight, height, and obesity in electronic medical records are highly valid
Sandhu N, Krusina A, Quan H, Walker R, Martin EA, Eastwood CA, Southern DA.
Obesity Science and Practice • 2023
Integrating large language models with human expertise for disease detection in electronic health records
Pan J, Lee S, Cheligeer C, Martin EA, Riazi K, Quan H, Li N.
Computers in Biology and Medicine • 2025
Hypertension identification using inpatient clinical notes from electronic medical records: an explainable, data-driven algorithm study
Martin EA, D'Souza A, Lee S, Doktorchik C, Eastwood CA, Quan H.
CMAJ Open • 2023
Exploring the reliability of inpatient EMR algorithms for diabetes identification
Lee S, Martin E, Pan J, Eastwood C, Southern D, Campbell D, Shaheen A, Quan H, Butalia S.
BMJ Health and Care Informatics • 2023
Electronic medical record-based case phenotyping for the Charlson Conditions: scoping review
Lee S, Doktorchik C, Martin EA, D'Souza AG, Eastwood C, Shaheen AA, Quan H.
JMIR Medical Informatics • 2021
