Quan, Hude

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, J.-C., Saunders, L. D., Beck, C. A., Feasby, T. E., & Ghali, W. A. (2005) · Medical Care

Medical Coding and Health InformationChronic Disease Management Strategies

Cited by 10,669

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

Sundararajan, V., Henderson, T., Perry, C., Muggivan, A., Quan, H., & Ghali, W. A. (2004) · Journal of Clinical Epidemiology

Medical Coding and Health InformationChronic Disease Management Strategies

Cited by 2,439

A modification of the elixhauser comorbidity measures into a point system for hospital death using administrative data

van Walraven, C., Austin, P. C., Jennings, A., Quan, H., & Forster, A. J. (2009) · Medical Care

Chronic Disease Management StrategiesMedical Coding and Health Information

Cited by 2,200

Exploring physician specialist response rates to web-based surveys

Cunningham, C. T., Quan, H., Hemmelgarn, B., Noseworthy, T., Beck, C. A., Dixon, E., Samuel, S., Ghali, W. A., Sykes, L. L., & Jetté, N. (2015) · BMC Medical Research Methodology

Survey Methodology and NonresponseSurvey Sampling and Estimation Techniques

Cited by 995

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

Shrive, F. M., Stuart, H., Quan, H., & Ghali, W. A. (2006) · BMC Medical Research Methodology

Statistical Methods and Bayesian InferencePsychometric Methodologies and Testing

Cited by 650

Methods for identifying 30 chronic conditions: application to administrative data

Tonelli, M., Wiebe, N., Fortin, M., Guthrie, B., Hemmelgarn, B. R., James, M. T., Klarenbach, S. W., Lewanczuk, R., Manns, B. J., Ronksley, P., et al. (2016) · BMC Medical Informatics and Decision Making

Chronic Disease Management StrategiesMedical Coding and Health Information

Cited by 400

Validation of a case definition to define hypertension using administrative data

Quan, H., Khan, N., Hemmelgarn, B. R., Tu, K., Chen, G., Campbell, N., Hill, M. D., Ghali, W. A., & McAlister, F. A. (2009) · Hypertension

Medical Coding and Health InformationBlood Pressure and Hypertension Studies

Cited by 350

Recommendations for optimal ICD codes to study neurologic conditions: A systematic review

St. Germaine-Smith, C., Metcalfe, A., Pringsheim, T., Roberts, J. I., Beck, C. A., Hemmelgarn, B. R., McChesney, J., Quan, H., & Jette, N. (2012) · Neurology

Medical Coding and Health InformationStatistical Methods in Epidemiology

Cited by 206

Measuring agreement of administrative data with chart data using prevalence unadjusted and adjusted kappa

Chen, G., Faris, P., Hemmelgarn, B., Walker, R. L., & Quan, H. (2009) · BMC Medical Research Methodology

Reliability and Agreement in MeasurementMedical Coding and Health Information

Cited by 183

Identifying priorities in methodological research using ICD-9-CM and ICD-10 administrative data: report from an international consortium

De Coster, C., Quan, H., Finlayson, A., Gao, M., Halfon, P., Humphries, K. H., Johansen, H., Lix, L. M., Luthi, J.-C., Ma, J., et al. (2006) · BMC Health Services Research

Medical Coding and Health InformationElectronic Health Records Systems

Cited by 167

Association between physical illness and suicide among the elderly

Quan, H., Arboleda-Flórez, J., Fick, G. H., Stuart, H. L., & Love, E. J. (2002) · Social Psychiatry and Psychiatric Epidemiology

Suicide and Self-Harm StudiesHomicide, Infanticide, and Child Abuse

Cited by 156

Validation of a case definition for depression in administrative data against primary chart data as a reference standard

Doktorchik, C., Patten, S., Eastwood, C., Peng, M., Chen, G., Beck, C. A., Jetté, N., Williamson, T., & Quan, H. (2019) · BMC Psychiatry

Medical Coding and Health InformationMental Health Treatment and Access

Cited by 156

Epidemiology and natural history of primary biliary cirrhosis in a Canadian health region: A population‐based study†

Myers, R. P., Shaheen, A. A. M., Fong, A., Burak, K. W., Wan, A., Swain, M. G., Hilsden, R. J., Sutherland, L., & Quan, H. (2009) · Hepatology

Liver Diseases and ImmunityPediatric Hepatobiliary Diseases and Treatments

Cited by 135

Ethnicity and Sex Affect Diabetes Incidence and Outcomes

Khan, N. A., Wang, H., Anand, S., Jin, Y., Campbell, N. R. C., Pilote, L., & Quan, H. (2011) · Diabetes Care

Diabetes, Cardiovascular Risks, and LipoproteinsDiabetes Management and Research

Cited by 98

Chart documentation quality and its relationship to the validity of administrative data discharge records

So, L., Beck, C. A., Brien, S., Kennedy, J., Feasby, T. E., Ghali, W. A., & Quan, H. (2010) · Health Informatics Journal

Medical Coding and Health InformationElectronic Health Records Systems

Cited by 50

Evaluation of interventions to improve inpatient hospital documentation within electronic health records: a systematic review

Wiebe, N., Otero Varela, L., Niven, D. J., Ronksley, P. E., Iragorri, N., & Quan, H. (2019) · Journal of the American Medical Informatics Association

Electronic Health Records SystemsNursing Diagnosis and Documentation

Cited by 42

Maternal, pregnancy, and neonatal outcomes for women with Turner syndrome

Ramage, K., Grabowska, K., Silversides, C., Quan, H., & Metcalfe, A. (2020) · Birth Defects Research

Cardiovascular Issues in PregnancyConnective tissue disorders research

Cited by 21