Brandon M Zagorski

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OBJECTIVE To compare the operative outcomes of early and delayed cholecystectomy for acute cholecystitis. BACKGROUND Randomized trials comparing early to delayed cholecystectomy for acute cholecystitis have limited contemporary external validity. Furthermore, no study to date has been large enough to assess the impact of timing of cholecystectomy on the(More)
OBJECTIVES We determined the proportion of workers meeting criteria for major depressive episodes in the past year and examined the association between psychosocial work-stress variables and these episodes. METHODS Data were derived from the Canadian Community Health Survey 1.2, a population-based survey of 24324 employed, community-dwelling individuals(More)
Restructuring health care in Canada has emphasized the provision of ambulatory and home-based palliative care. Acquiring economic evidence is critical given this trend and its tremendous demands on family caregivers. The purposes of this study were: 1) to comprehensively assess the societal costs of home-based palliative care; and 2) to examine the(More)
BACKGROUND Past varicella infection (chicken pox) may reactivate into herpes zoster (shingles). Varicella vaccination leads to a reduction in cases of varicella that may in turn increase herpes zoster rates due to reduction in the immune boosting effect of exposure to varicella zoster virus against varicella reactivation. We assessed the impact of childhood(More)
OBJECTIVE To evaluate the effectiveness of the community based Cardiovascular Health Awareness Program (CHAP) on morbidity from cardiovascular disease. DESIGN Community cluster randomised trial. SETTING 39 mid-sized communities in Ontario, Canada, stratified by location and population size. PARTICIPANTS Community dwelling residents aged 65 years or(More)
BACKGROUND Performance measures are essential components of public reporting and quality improvement. To date, few such measures exist to provide a comprehensive assessment of the quality of emergency department services for children. OBJECTIVES Our goal was to use a systematic process to develop measures of emergency department care for children (0-19(More)
OBJECTIVE We sought to validate a case-finding algorithm for human immunodeficiency virus (HIV) infection using administrative health databases in Ontario, Canada. METHODS We constructed 48 case-finding algorithms using combinations of physician billing claims, hospital and emergency room separations and prescription drug claims. We determined the test(More)
BACKGROUND The aim of this paper is to examine factors associated with discharge destination after acquired brain injury in a publicly insured population using the Anderson Behavioral Model as a framework. METHODS We utilized a retrospective cohort design. Inpatient data from provincial acute care records from fiscal years 2003/4 to 2006/7 with a(More)
BACKGROUND Despite evidence in favour of early cholecystectomy for most patients with acute cholecystitis, variation in practice has been reported across hospitals worldwide. We sought to characterize the extent and potential sources of variation in the performance of early cholecystectomy for acute cholecystitis within a large regional health care system.(More)
BACKGROUND By ensuring timely access to trauma center (TC) care, well-organized trauma systems have the potential to significantly reduce injury-related mortality. However, undertriage continues to be a significant problem in many regional trauma systems. Taking a novel, population-based approach, we estimated the potential detrimental impact of undertriage(More)