Walter Wodchis

Prof. Walter Wodchis

University of Toronto
+1
orcid

Research Focus & Metrics

Academic Career Length

29Years (1998-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
31 March 2016 in BMC Family Practice
Verified
Journal Article
Open access
PDF file
ATAshley Elizabeth Thompson
Ashley Elizabeth Thompson
YAYvonne Anisimowicz
Yvonne Anisimowicz
BMBaukje Miedema
Baukje Miedema
WHWilliam Hogg
William Hogg
WWWalter Wodchis
Walter Wodchis
KAKris Aubrey-Bassler
Kris Aubrey-Bassler
Canadians’ health care-seeking behaviour for physical and mental health issues was examined using the international Quality and Cost of Primary Care (QUALICOPC) survey that was conducted in 2013 in Canada. This study used the cross-sectional Patient Experiences Survey collected from 7260 patients in 759 practices across 10 Canadian provinces as part of the QUALICOPC study. A Responsive Care Scale (RCS) was constructed to reflect the degree of health care-seeking behaviour across 11 health conditions. Using several patient characteristics as independent variables, four multiple regression analyses were conducted. Patients’ self-reports indicated that there were gender differences in health care-seeking behaviour, with women reporting they visited their primary care provider to a greater extent than did men for both physical and mental health concerns. Overall, patients were less likely to seek care for mental health concerns in comparison to physical health concerns. For both women and men, the results of the regressions indicated that age, illness prevention, trust in physicians and chronic conditions were important factors when explaining health care-seeking behaviours for mental health concerns. This study confirms the gender differences in health care-seeking behaviour advances previous research by exploring in detail the variables predicting differences in health care-seeking behaviour for men and women. The variables were better predictors of health care-seeking behaviour in response to mental health concerns than physical health concerns, likely reflecting greater variation among those seeking mental health care. This study has implications for those working to improve barriers to health care access by identifying those more likely to engage in health care-seeking behaviours and the variables predicting health care-seeking. Consequently, those who are not accessing primary care can be targeted and policies can be developed and put in place to promote their health care-seeking behavior.

28 November 2017 in JAMA
Verified
Journal Article
Open access
PDF file
DPDaniel Pincus
Daniel Pincus
BRBheeshma Ravi
Bheeshma Ravi
DWDavid Wasserstein
David Wasserstein
AHAnjie Huang
Anjie Huang
JPJ. Michael Paterson
J. Michael Paterson
WWWalter Wodchis
Walter Wodchis
Expedited hip fracture surgery for increasing numbers of patients1 who may be medically complex and most commonly receive surgery outside regular working hours2 involves several different medical and surgical specialists, hospital administrators, and allied staff.3 Despite resources expended toward performing surgery earlier4 and extensive research on the topic,5 controversy remains about the acceptable waiting time for treatment. Guidelines from the United States6 and Canada7 recommend surgery within 48 hours. The proportion of patients receiving surgery within 36 hours is the quality-of-care indicator used in the United Kingdom, but hospital adherence ranges from 14.7% to 95.3%.8

1 December 2012 in Pediatrics
Verified
Journal Article
Open access
PDF file
ECEyal Cohen
Eyal Cohen
JBJay G. Berry
Jay G. Berry
XCXimena Camacho
Ximena Camacho
GAGeoff Anderson
Geoff Anderson
WWWalter Wodchis
Walter Wodchis
AGAstrid Guttmann
Astrid Guttmann
BACKGROUND AND OBJECTIVE: Health care use of children with medical complexity (CMC), such as those with neurologic impairment or other complex chronic conditions (CCCs) and those with technology assistance (TA), is not well understood. The objective of the study was to evaluate health care utilization and costs in a population-based sample of CMC in Ontario, Canada. METHODS: Hospital discharge data from 2005 through 2007 identified CMC. Complete health system use and costs were analyzed over the subsequent 2-year period. RESULTS: The study identified 15 771 hospitalized CMC (0.67% of children in Ontario); 10 340 (65.6%) had single-organ CCC, 1063 (6.7%) multiorgan CCC, 4368 (27.6%) neurologic impairment, and 1863 (11.8%) had TA. CMC saw a median of 13 outpatient physicians and 6 distinct subspecialists. Thirty-six percent received home care services. Thirty-day readmission varied from 12.6% (single CCC without TA) to 23.7% (multiple CCC with TA). CMC accounted for almost one-third of child health spending. Rehospitalization accounted for the largest proportion of subsequent costs (27.2%), followed by home care (11.3%) and physician services (6.0%). Home care costs were a much larger proportion of costs in children with TA. Children with multiple CCC with TA had costs 3.5 times higher than children with a single CCC without TA. CONCLUSIONS: Although a small proportion of the population, CMC account for a substantial proportion of health care costs. CMC make multiple transitions across providers and care settings and CMC with TA have higher costs and home care use. Initiatives to improve their health outcomes and decrease costs need to focus on the entire continuum of care.

23 April 2015 in BMC Public Health
Verified
Journal Article
Open access
PDF file
APAnna J Koné Pefoyo
Anna J Koné Pefoyo
SBSusan E Bronskill
Susan E Bronskill
AGAndrea Gruneir
Andrea Gruneir
ACAndrew Calzavara
Andrew Calzavara
KTKednapa Thavorn
Kednapa Thavorn
WWWalter Wodchis
Walter Wodchis
Multimorbidity, the co-occurrence of two or more chronic conditions, is common among older adults and is known to be associated with high costs and gaps in quality of care. Population-based estimates of multimorbidity are not readily available, which makes future planning a challenge. We aimed to estimate the population-based prevalence and trends of multimorbidity in Ontario, Canada and to examine patterns in the co-occurrence of chronic conditions. This retrospective cohort study includes all Ontarians (aged 0 to 105 years) with at least one of 16 common chronic conditions. Descriptive statistics were used to examine and compare the prevalence of multimorbidity by age and number of conditions in 2003 and 2009. The co-occurrence of chronic conditions among individuals with multimorbidity was also explored. The prevalence of multimorbidity among Ontarians rose from 17.4% in 2003 to 24.3% in 2009, a 40% increase. This increase over time was evident across all age groups. Within individual chronic conditions, multimorbidity rates ranged from 44% to 99%. Remarkably, there were no dominant patterns of co-occurring conditions. The high prevalence of multimorbidity and numerous combinations of conditions suggests that single, disease-oriented management programs may be less effective or efficient tools for high quality care compared to person-centered approaches.

26 April 2019 in International Journal of Epidemiology
Verified
Journal Article
Open access
PDF file
RNRyan Ng
Ryan Ng
RSRinku Sutradhar
Rinku Sutradhar
ZYZhan Yao
Zhan Yao
WWWalter Wodchis
Walter Wodchis
Laura RosellaLaura Rosella
Laura Rosella
Background: This study examined the incidence of a person’s first diagnosis of a selected chronic disease, and the relationships between modifiable lifestyle risk factors and age to first of six chronic diseases.Methods: Ontario respondents from 2001 to 2010 of the Canadian Community Health Survey were followed up with administrative data until 2014 for congestive heart failure, chronic obstructive respiratory disease, diabetes, lung cancer, myocardial infarction and stroke. By sex, the cumulative incidence function of age to first chronic disease was calculated for the six chronic diseases individually and compositely. The associations between modifiable lifestyle risk factors (alcohol, body mass index, smoking, diet, physical inactivity) and age to first chronic disease were estimated using cause-specific Cox proportional hazards models and Fine-Gray competing risk models.Results: Diabetes was the most common disease. By age 70.5 years (2015 world life expectancy), 50.9% of females and 58.1% of males had at least one disease and few had a death free of the selected diseases (3.4% females; 5.4% males). Of the lifestyle factors, heavy smoking had the strongest association with the risk of experiencing at least one chronic disease (cause-specific hazard ratio = 3.86; 95% confidence interval = 3.46, 4.31). The lifestyle factors were modelled for each disease separately, and the associations varied by chronic disease and sex.Conclusions: We found that most individuals will have at least one of the six chronic diseases before dying. This study provides a novel approach using competing risk methods to examine the incidence of chronic diseases relative to the life course and how their incidences are associated with lifestyle behaviours.

24 January 2005 in BMJ
Verified
Journal Article
Open access
PDF file
SGSudeep S Gill
Sudeep S Gill
PRPaula A Rochon
Paula A Rochon
NHNathan Herrmann
Nathan Herrmann
PLPhilip E Lee
Philip E Lee
KSKathy Sykora
Kathy Sykora
MMMuhammad Mamdani
Muhammad Mamdani
Objective To compare the incidence of admissions to hospital for stroke among older adults with dementia receiving atypical or typical antipsychotics. Design Population based retrospective cohort study. Setting Ontario, Canada. Patients 32 710 older adults (≤ 65 years) with dementia (17 845 dispensed an atypical antipsychotic and 14 865 dispensed a typical antipsychotic). Main outcome measures Admission to hospital with the most responsible diagnosis (single most important condition responsible for the patient's admission) of ischaemic stroke. Observation of patients until they were either admitted to hospital with ischaemic stroke, stopped taking antipsychotics, died, or the study ended. Results After adjustment for potential confounders, participants receiving atypical antipsychotics showed no significant increase in risk of ischaemic stroke compared with those receiving typical antipsychotics (adjusted hazard ratio 1.01, 95% confidence interval 0.81 to 1.26). This finding was consistent in a series of subgroup analyses, including ones of individual atypical antipsychotic drugs (risperidone, olanzapine, and quetiapine) and selected subpopulations of the main cohorts. Conclusion Older adults with dementia who take atypical antipsychotics have a similar risk of ischaemic stroke to those taking typical antipsychotics.