Publications by authors named "Marc Erick Theriault"
Objective: The aim of this study was to explore the impact of the Ontario Workplace Safety and Insurance Board's (WSIB's) graduated approach to opioid management on opioid prescribing and disability claim duration.
Methods: We studied patterns of opioid use and disability claim duration among Ontarians who received benefits through the WSIB between 2002 and 2013. We used interventional time series analysis to assess the impact of the WSIB graduated formulary on these trends.
Objective: The aim of this study was to assess the impact of a new workers' compensation medical assessment model on loss of earnings (LOE) benefits duration.
Methods: A medical assessment model was introduced incorporating return to work planning and inclusion of the worker's treating physician. Impact of the program on LOE benefit duration was assessed using a quasi-experimental pre-post study design.
Article Synopsis
- The study investigates how delays in nonemergent colon cancer surgery affect patient outcomes, specifically operative mortality, disease-specific survival, and overall survival.
- Researchers analyzed data from nearly 8,000 patients using the SEER-Medicare databases from 1993 to 1996, focusing on two key time frames: the period from surgeon consultation to hospital admission and the time from the first diagnostic test to hospital admission.
- Results show that while average delays were about 7 days for consult-to-admission and 17 days for test-to-admission, longer delays did not significantly impact operative mortality or disease-specific survival, although slightly increased risks of death were noted with the longest delays.
Background: There is a lack of information from Canadian hospitals on the role of hospital characteristics such as procedure volume and teaching status on the survival of patients who undergo major cancer resection. Therefore, we chose to study these relationships using data from patients treated in Ontario hospitals.
Methods: We used the Ontario Cancer Registry from calendar years 1990-2000 to obtain data on patients who underwent surgery for breast, colon, lung or esophageal cancer or who underwent major liver surgery related to a cancer diagnosis between 1990 and 1995 in order to assess the influence of volume of procedures and teaching status of hospitals on in-hospital death rate and long-term survival.
Purpose: To determine how long patients in Ontario waited for major breast, colorectal, lung or prostate cancer surgery in the years 1993-2000.
Methods: "Surgical waiting time" was defined as the interval from date of preoperative surgeon consult to date of hospital admission for surgery. We created patient cohorts by linking appropriate diagnosis and procedure codes from Canadian Institutes of Health Information data.
To study comorbidity in patients with Parkinsonism (PKM), relative hospitalization rates from 1994 to 1999 for 15,304 cases were compared with 30,608 controls. After correction for differential survival, the rates were higher for cases compared to controls for aspiration pneumonia (6.34; 95% confidence interval [CI], 5.
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- Small area variation analysis (SAV) examines differences in health care rates across regions, attributing them to factors like physician practices and patient characteristics.
- The study compared the chi-square test with three other methods for identifying significant outliers in SAV data from Ontario’s hospital discharges related to several surgeries between 1989 and 1991.
- The findings suggest that, particularly with large datasets and binary outcomes, the chi-square test is equally effective as the newer methods (ABC, SCI, GNS) in detecting potential differences, confirming its continued relevance in health services research.
Parkinson's disease (PD) is associated with a significant burden of illness and cost to society, which has been difficult to quantify. Our objective was to use linked administrative databases from the population of Ontario, Canada, to assess the prevalence of parkinsonism, physician- and drug-related costs, and hospital utilization for parkinsonian patients compared with age/sex matched controls. An inception cohort of parkinsonian cases from 1993/1994 was age and sex matched (1:2) to controls and followed for 6 years.
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