Research Topics
| Jeffrey C KwongSummaryAffiliation: University of Toronto Country: Canada Publications
| Collaborators
|
Detail Information
Publications
The effect of universal influenza immunization on vaccination rates in OntarioJeff C Kwong
Institute for Clinical Evaluative Sciences, 2075 Bayview Avenue, Toronto, Ontario
Health Rep 17:31-40. 2006..This article examines the association between introduction of Ontario's Universal Influenza Immunization Program and changes in vaccination rates over time in Ontario, compared with the other provinces combined...
School-based influenza vaccine delivery, vaccination rates, and healthcare use in the context of a universal influenza immunization program: an ecological studyJeffrey C Kwong
The Institute for Clinical Evaluative Sciences, 2075 Bayview Avenue, Room G1 06, Toronto, Ontario M4N 3M5, Canada
Vaccine 28:2722-9. 2010..In the context of universal influenza vaccination, school-based delivery is associated with higher vaccination rates and modest reductions in healthcare use in school-age children...
The impact of infection on population health: results of the Ontario burden of infectious diseases studyJeffrey C Kwong
Institute for Clinical Evaluative Sciences, Toronto, Canada
PLoS ONE 7:e44103. 2012..We sought to quantify the contribution of a wide range of infectious diseases to the overall infectious disease burden in a high-income setting...- Vaccination against 2009 pandemic H1N1 in a population dynamical model of Vancouver, Canada: timing is everythingJessica M Conway
Division of Mathematical Modeling, University of British Columbia Centre for Disease Control, 655 West 12th Avenue, V5Z 4R4 Vancouver, British Columbia, Canada
BMC Public Health 11:932. 2011..We adapted a city-level contact network model to study different campaigns on influenza morbidity and mortality... - Factors associated with initiation and completion of the quadrivalent human papillomavirus vaccine series in an Ontario cohort of grade 8 girlsLeah M Smith
Department of Community Health and Epidemiology, Queen s University, Carruthers Hall, Kingston, ON, K7L 3N6, Canada
BMC Public Health 11:645. 2011..In order to successfully guide future HPV vaccine programming, it is important to monitor HPV vaccine use and determine factors associated with use in this population... - Canada's Response to Pandemic H1N1 Influenza: The Collection of Individual-Level Data at the Point of VaccinationJeffrey C Kwong
MD, MSc, is a scientist at the Institute for Clinical Evaluative Sciences, in Toronto, Ontario You can contact Dr Kwong at 416 480 4055, ext 7665, by fax at 416 480 6048 or by e mail at
Healthc Q 13:18-20. 2010.... - Influenza morbidity and mortality in elderly patients receiving statins: a cohort studyJeffrey C Kwong
The Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
PLoS ONE 4:e8087. 2009..Statins possess immunomodulatory properties and have been proposed for reducing morbidity during an influenza pandemic. We sought to evaluate the effect of statins on hospitalizations and deaths related to seasonal influenza outbreaks... - The effect of universal influenza immunization on mortality and health care useJeffrey C Kwong
Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
PLoS Med 5:e211. 2008..We evaluated the effect of Ontario's UIIP on influenza-associated mortality, hospitalizations, emergency department (ED) use, and visits to doctors' offices... - Impact of varicella vaccination on health care outcomes in Ontario, Canada: effect of a publicly funded program?Jeffrey C Kwong
Institute for Clinical Evaluative Sciences, Toronto, Canada
Vaccine 26:6006-12. 2008..Varicella vaccination is effective at reducing varicella-related health care use, with benefits extending beyond those who receive the vaccine. Publicly funded vaccination programs may be more effective than private vaccine availability... - Using OHIP physician billing claims to ascertain individual influenza vaccination statusJeffrey C Kwong
Institute for Clinical Evaluative Sciences, Ontario, Canada
Vaccine 25:1270-4. 2007.... - Obesity and respiratory hospitalizations during influenza seasons in Ontario, Canada: a cohort studyJeffrey C Kwong
Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
Clin Infect Dis 53:413-21. 2011.... - Oral vitamin B12 therapy in the primary care setting: a qualitative and quantitative study of patient perspectivesJeff C Kwong
Department of Family and Community Medicine, University of Toronto, 263 McCaul Street, Toronto, Ontario, M5T 1W7, Canada
BMC Fam Pract 6:8. 2005..We investigated patient perspectives on switching from injection to oral B12 therapy... - Perceptions of immunization information systems for collecting pandemic H1N1 immunization data within Canada's public health community: a qualitative studyChristine L Heidebrecht
Department of Surveillance and Epidemiology, Ontario Agency for Health Protection and Promotion, Toronto, Canada
BMC Public Health 10:523. 2010.... - Time and motion study to compare electronic and hybrid data collection systems during the pandemic (H1N1) 2009 influenza vaccination campaignSusan Quach
Surveillance and Epidemiology, Ontario Agency for Health Protection and Promotion, Toronto, Canada
Vaccine 29:1997-2003. 2011..Electronic registration and record keeping were faster than paper-based methods; these findings should be used to improve data collection for future influenza seasons... - Influenza vaccination rates in Ontario children: implications for universal childhood vaccination policyKathy Moran
Durham Region Health Department and York Region Community and Health Services, Public Health Branch, Ontario, Canada
Vaccine 27:2350-5. 2009..5%) and Alberta (52.2%). Universal vaccination in Ontario has achieved modest coverage in children aged 2-11 years, but has been less successful than targeted programs in vaccinating infants aged 6-23 months... - Influenza vaccination coverage across ethnic groups in CanadaSusan Quach
Surveillance and Epidemiology, Public Health Ontario, Toronto, Ontario, Canada
CMAJ 184:1673-81. 2012..We conducted a national study to estimate influenza vaccine coverage across 12 ethnic groups in Canada to assess the presence of ethnic disparities... - Measuring influenza immunization coverage among health care workers in acute care hospitals and continuing care organizations in CanadaSusan Quach
Surveillance and Epidemiology Unit, Public Health Ontario, Toronto, Ontario, Canada
Am J Infect Control 41:340-4. 2013..We describe the ability of Canadian health care organizations to measure influenza immunization coverage among health care workers and identify factors associated with comprehensive influenza immunization measurement... - Low rates of influenza immunization in young children under Ontario's universal influenza immunization programMichael A Campitelli
Institute for Clinical Evaluative Sciences, Toronto, Ontario M4N 3M5 Canada
Pediatrics 129:e1421-30. 2012..To determine physician-administered influenza vaccine coverage for children aged 6 to 23 months in a jurisdiction with a universal influenza immunization program during 2002-2009 and to describe predictors of vaccination... - Pan-Canadian assessment of pandemic immunization data collection: study methodologyJennifer A Pereira
Ontario Agency for Health Protection and Promotion, Toronto, Canada
BMC Med Res Methodol 10:51. 2010..This study's objective was to compare the efficiencies and perceptions of data collection methods employed during Canada's pandemic (H1N1) 2009 influenza vaccination campaign... - Influenza vaccination and all-cause mortality in community-dwelling elderly in Ontario, Canada, a cohort studyMichael A Campitelli
The Institute for Clinical Evaluative Sciences, Toronto, Canada
Vaccine 29:240-6. 2010..Since observational studies are prone to bias, future efforts to estimate vaccine effectiveness in the elderly should strive to minimize bias through improved data quality, novel data sources, and/or new analytical techniques... - Incorporating scannable forms into immunization data collection processes: a mixed-methods studyChristine L Heidebrecht
Infectious Diseases, Public Health Ontario, Toronto, Ontario, Canada
PLoS ONE 7:e49627. 2012..To explore the suitability of this approach for collecting immunization data, we conducted a feasibility study in two settings in Ontario, Canada... - Exploring the feasibility of integrating barcode scanning technology into vaccine inventory recording in seasonal influenza vaccination clinicsJennifer A Pereira
Department of Surveillance and Epidemiology, Public Health Ontario, Toronto, Canada
Vaccine 30:794-802. 2012..We conducted feasibility studies to examine integration of barcode scanning into inventory recording workflow for mass immunization clinics... - Respiratory virus infection and risk of invasive meningococcal disease in central Ontario, CanadaAshleigh R Tuite
Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
PLoS ONE 5:e15493. 2010.... - Population-based incidence of herpes zoster after introduction of a publicly funded varicella vaccination programPeter Tanuseputro
Institute for Clinical Evaluative Sciences, Toronto, ON, Canada
Vaccine 29:8580-4. 2011..We assessed the impact of childhood varicella vaccination in Ontario, Canada on zoster incidence and healthcare visits, and established baseline zoster rates prior to zoster vaccine introduction... - The effect of universal influenza immunization on antibiotic prescriptions: an ecological studyJeffrey C Kwong
Institute for Clinical Evaluative Sciences, University of Toronto, Canada
Clin Infect Dis 49:750-6. 2009..Universal influenza immunization is associated with reduced influenza-associated antibiotic prescriptions... - Is a mass immunization program for pandemic (H1N1) 2009 good value for money? Evidence from the Canadian ExperienceBeate Sander
Department of Health Policy, Management and Evaluation, University of Toronto, Toronto, Canada
Vaccine 28:6210-20. 2010.... - Barriers to the use of reminder/recall interventions for immunizations: a systematic reviewJennifer A Pereira
Surveillance and Epidemiology, Public Health Ontario, 480 University Ave, Suite 300, Toronto, ON, M5G 1V2, Canada
BMC Med Inform Decis Mak 12:145. 2012..abstract:.. - Physical activity and influenza-coded outpatient visits, a population-based cohort studyEric Siu
Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
PLoS ONE 7:e39518. 2012..We examined the association between physical activity and influenza-coded outpatient visits, as a proxy for influenza infection... - Underestimating the safety benefits of a new vaccine: the impact of acellular pertussis vaccine versus whole-cell pertussis vaccine on health services utilizationSteven Hawken
Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Ontario, Canada
Am J Epidemiol 176:1035-42. 2012..Future analyses comparing vaccines for safety should examine specific endpoints and general health services utilization... - Optimal pandemic influenza vaccine allocation strategies for the Canadian populationAshleigh R Tuite
Department of Epidemiology, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
PLoS ONE 5:e10520. 2010..We sought to determine optimal prioritization of vaccine distribution among different age and risk groups within the Canadian population, to minimize influenza-attributable morbidity and mortality... - A cost comparison of electronic and hybrid data collection systems in Ontario during pandemic and seasonal influenza vaccination campaignsJennifer A Pereira
Department of Surveillance and Epidemiology, Public Health Ontario, Toronto, Canada
BMC Health Serv Res 11:210. 2011..The objective of our evaluation was to compare projected five-year costs associated with implementing these systems in Ontario public health units (PHUs) during pandemic and seasonal influenza vaccination campaigns... - Evaluation of coseasonality of influenza and invasive pneumococcal disease: results from prospective surveillanceStefan P Kuster
Department of Microbiology, Mount Sinai Hospital, Toronto, Ontario, Canada
PLoS Med 8:e1001042. 2011..We aimed to investigate the relationship between influenza infection and IPD in Ontario, Canada, using several complementary methodological tools... - Predictors of universal influenza vaccination uptake in grades 1 and 2 Toronto school children: effective vaccination strategies should not end with at risk childrenRichard G Foty
Child Health Evaluative Sciences, The Hospital for Sick Children Research Institute, Toronto, Ontario, Canada
Vaccine 28:6518-22. 2010..20, 95%CL 1.01-1.42) and those with the lowest income adequacy (OR 1.37, 95%CL 1.12-1.68). Data from this study will be helpful in designing future influenza vaccination strategies to improve vaccination rates in the entire population... - Death rates of medical school class presidentsDonald A Redelmeier
Department of Medicine, University of Toronto, The Clinical Epidemiology and Health Care Research Program, Sunnybrook and Women s College Health Sciences Centre, The Institute for Clinical Evaluative Sciences Ontario, Canada
Soc Sci Med 58:2537-43. 2004..001 ). We suggest that the type of medical professional who sacrifices themselves for this type of professional prestige may also be the type who fails to look after their health or is otherwise prone to early mortality... - Estimating influenza vaccine effectiveness in community-dwelling elderly patients using the instrumental variable analysis methodKenny Wong
Institute for Clinical Evaluative Sciences, 2075 Bayview Ave, Toronto, ON, Canada
Arch Intern Med 172:484-91. 2012..Estimates of influenza vaccine effectiveness in elderly individuals are largely from observational studies, which are susceptible to bias. Instrumental variable (IV) methods control for overt and hidden biases in observational studies... - Is a Mass Immunization Program for Pandemic (H1N1) 2009 Good Value for Money? Early Evidence from the Canadian ExperienceBeate Sander
Department of Health Policy, Management and Evaluation, University of Toronto, Toronto, Canada University of Guelph Dalla Lana School of Public Health, University of Toronto Sunnybrook Hospital, The University of Toronto Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada Department of Laboratory Medicine and Pathobiology, University of Toronto Toronto Health Economics and Technology Assessment Collaborative THETA and University of Toronto
PLoS Curr 1:RRN1137. 2009..Our analysis indicates this program will reduce influenza cases by 50%, preventing 35 deaths, and cutting treatment costs in half. A pandemic (H1N1) 2009 immunization program is likely to be highly cost-effective... - Safety of influenza vaccination in patients with myasthenia gravis: a population-based studyLorne Zinman
Department of Medicine, Sunnybrook Health Sciences Centre, 2075 Bayview Avenue, Toronto, Ontario M4N 3M5, Canada
Muscle Nerve 40:947-51. 2009..Vaccination of patients with MG against influenza was not found to be associated with exacerbations of the disease. Our findings do not support the practice of withholding influenza vaccination in patients with MG... - Influenza immunization data: can we make order out of chaos?Sherman D Quan
are members of the Department of Surveillance and Epidemiology, Public Health Ontario, in Toronto, Ontario
Healthc Q 14:6-8. 2011.... - Optimal pandemic influenza vaccine allocation strategies for the canadian populationAshleigh Tuite
Dalla Lana School of Public Health, University of Toronto Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada and Public Health Agency of Canada
PLoS Curr 2:RRN1144. 2010..Vaccination may significantly reduce influenza-attributable morbidity and mortality, but the benefits are dependent on epidemic dynamics, time for program roll-out, and vaccine uptake... - Economic appraisal of Ontario's Universal Influenza Immunization Program: a cost-utility analysisBeate Sander
Department of Health Policy, Management and Evaluation, University of Toronto, Toronto, Canada
PLoS Med 7:e1000256. 2010..This is the first large-scale program of its kind worldwide. The objective of this study was to conduct an economic appraisal of Ontario's UIIP compared to a targeted influenza immunization program (TIIP)... - Seasonal Influenza Vaccine Allocation in the Canadian Population during a PandemicAshleigh Tuite
Dalla Lana School of Public Health, University of Toronto Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada and Public Health Agency of Canada
PLoS Curr 1:RRN1143. 2009.... - Flu shots in Canada: are they getting to those who need them most?Jeff C Kwong
University Health Network, Toronto, Ontario, Canada
Healthc Q 11:20-2. 2008 - Appropriate measures of influenza immunization program effectivenessJeffrey C Kwong
Vaccine 25:967-9. 2007..Regardless, for evaluating universal influenza immunization program effectiveness, other established and available measures employed in previous studies describing the epidemiology of influenza should be used instead of laboratory data...