H Quan

..Surnames have the potential to accurately identify ancestral origins as they are passed on from generation to generation. In this study, we developed and validated a Chinese surname list to define Chinese ethnicity...

..This population-based study assessed rates of all-cause mortality, myocardial infarction, heart failure, and stroke for up to 12 years of follow-up in 3.5 million Canadian adults newly diagnosed with hypertension...

..To compare ethnic and sex difference in the incidence of newly diagnosed hypertension, and subsequent risk of cardiovascular disease outcomes among South Asian, Chinese and white patients...

..To assess use of regular medical doctors (RMDs), as well as awareness and use of telephone health lines or telehealth services, by official language minorities (OLMs) in Canada...

..The purpose of this study was to assess whether or not the change in coding classification had an impact on diagnosis and comorbidity coding in hospital discharge data across Canadian provinces...

..We measured the risk of developing a composite cardiovascular outcome of recurrent AMI, congestive heart failure (CHF) requiring hospitalization, or death, in these two groups...

..With rapid economic growth and globalization, lifestyle in China has been changing dramatically. This study aimed to describe the male and female adult Chinese population health status...

..Acetaminophen overdose (AO) is the most common cause of acute liver failure. We examined temporal trends and sociodemographic risk factors for AO in a large Canadian health region...

..The purpose of this study is to demonstrate the performance of Kappa and PABAK, and assess the agreement between hospital discharge administrative data and chart review data conditions...

..Here, we describe the process of translating our data merging solution to ICD-10, and then validating its performance...

..The aim of this study was to evaluate whether the combination of administrative data and self-reported data provided a more complete estimate of co-morbidity among patients referred for sleep diagnostic testing...

..The objective of this study was to compare six different imputation techniques for dealing with missing data in the Zung Self-reported Depression scale (SDS)...

..Thus, the purpose of this study was to survey corresponding authors in published medical journals to determine their opinion on publication impact in relation to performance review and promotion...

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..We assessed the linkage and correct linkage rate using deterministic record linkage among three commonly used Canadian databases, namely, the population registry, hospital discharge data and Vital Statistics registry...

..The purpose of this study is to compare the operations and performance of public and private hospitals in Guangdong Province, China, focusing on differences in patient case-mix and quality of care...

..The nine comorbidities that we examined were shock, diabetes with complications, congestive heart failure, cancer, cerebrovascular disease, pulmonary edema, acute renal failure, chronic renal failure, and cardiac dysrhythmias...

..lt;13,000 records), 2) coders' employment status (full- vs. part-time), and 3) hospital type...

..We conducted a survey in Shanghai to describe children's health insurance coverage according to their migration status...

..To update appropriateness ratings for carotid endarterectomy using the best clinical evidence and to develop a tool to audit the procedure's use...

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..However, the centralization of preoperative assessment clinics may introduce geographical barriers to utilization that are dependent on where a patient lives with respect to the location of the preoperative assessment clinic...

..The purpose of this study was to compare the discriminative ability of the Charlson index to the APACHE II in predicting hospital mortality in adult multisystem ICU patients...

..This paper presents a list of high-priority methodological areas for researchers using health administrative data...

..Therefore, we conducted a survey among Chinese and Whites in a Canadian city to determine their reported satisfaction, and perceptions of physicians...

..This study assessed the extent to which general practitioners documented recommended preventive screening interventions among eligible patients...

..We compared prescribing and adherence to ACE-inhibitors (ACEI), beta-blockers (BB), and statins following AMI among elderly Chinese, South Asian, and Non-Asian patients...

..The aim of this study was to describe the differences in the incidence of hospitalized acute myocardial infarction (AMI) among the three largest ethnic groups in British Columbia (BC), Canada...

..The purpose of this study was to investigate the difference in hospital readmission rate and mortality between Asian and other Canadian HF patients...

..Thus, we undertook this larger study to more definitively assess the association between elderly suicide and physical illness...

..Previous studies evaluated cardiac procedure use and outcome over the short term, with relatively few Asian patients included...

..We therefore analyzed data from the 2001 Canadian Community Health Survey to compare the use of health services by members of visible minority groups and nonmembers (white people) in Canada...

..Recognizing this, we conducted a multistep process to develop ICD-10 coding algorithms to define Charlson and Elixhauser comorbidities in administrative data and assess the performance of the resulting algorithms...

..However, performance of ICD-10-CA/CCI coding algorithms in risk adjustment should be evaluated in a larger database...

..876 in Swiss data (2008). The updated index of 12 comorbidities showed good-to-excellent discrimination in predicting in-hospital mortality in data from 6 countries and may be more appropriate for use with more recent administrative data...

..To find out if the cost of health services was artificially increased because of a delay in surgery due to a lack of resources...

..The authors conducted this study to assess 1) the knowledge of IBD of participants attending educational workshops offered to the public and 2) the effect of the workshop on participants' knowledge level...

..A population-based study using administrative data to examine the short and long term survival of patients after AMI in Alberta between 1994 and 1999 was conducted...

..That finding suggests that Chinese Canadians use CAM for the treatment of chronic disease, while white Canadians use such therapies for disease treatment and health maintenance...

..To describe mortality, cause of death and life expectancy among Chinese (both immigrant and Canadian-born) and other Canadians in the Province of Alberta...

..Given that the validity of diagnosis-type indicators is unknown, we conducted a detailed chart review to evaluate the accuracy of diagnosis-type indicators for flagging complications...

..The provision of home care after hospitalization selected those patients that stay in hospital longer and required more hospital care...

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..These results provide evidence that administrative data can be used as a relatively valid source of data to define cases of hypertension for surveillance and research purposes...

..However, little is known about the validity of administrative coding of procedure data. We conducted a detailed chart review to evaluate the accuracy and completeness of information on procedures in administrative data...

..The objectives of this study were to examine Canadian trends in rates of in-hospital death after CABG and to compare provincial risk-adjusted death rates...

..5%-33%) than does the Charlson/Deyo method (5%-25%). CONCLUSIONS: The Elixhauser comorbidity measurement method performs better than the widely used Charlson/Deyo method in the Canadian acute MI cases studied...

..Our findings indicate that controversial changes to the structure of the health care system can occur without loss of efficiency and reduction in quality of care...

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..The ability to predict in-hospital mortality is less reliable for some of the individual comorbidities than it is for the summarized Charlson index scores in administrative data...

..Use of this method is widespread despite published concerns regarding the validity of resulting curves...

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..12), respectively. We conclude that renal insufficiency, both dialysis dependent and non-dialysis dependent, is an independent risk factor for increased mortality and poor long-term survival among patients undergoing coronary angiography...

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..This nationwide study examined observed and risk-adjusted death rates for 23 Canadian hospitals performing CABG...

..Because different methods often produce divergent severity rankings, analyses of provider-specific outcomes may be biased depending on the method used...

..Cost per admission was greatest in metropolitan hospitals with angiography capability compared to other hospital types...

..This study sought to determine the rate and the regional variation in the rate of CEA in Canada, its provinces, and census divisions for 1994-1997...

..To determine differences by gender among elderly persons who commit suicide on demographic characteristics, place of suicide, suicide method, previous suicide behaviour, and precipitant stressor...

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..We determined whether access to care differed between status Aboriginal people (Aboriginal people registered under the federal Indian Act) and non-Aboriginal people with chronic kidney disease...

..To aid in the development of specific programs to improve hypertension management, the present report characterizes Canadians who indicated that they had hypertension but were not taking antihypertensive drug therapy...

..Alternatively, some patients may have turned to chelation as a "last resort" after having been judged unsuitable for revascularization...

..The effectiveness of beta-blockers and ACE inhibitors/RBs for CHF should be more broadly tested in clinical trials that recruit older patients and those with diastolic dysfunction...

..The objective of this study is to determine the associations between estimated glomerular filtration rate (eGFR) and hospitalization or death with pneumonia...

..It is imperative to assess errors that could occur in administrative data due to the introduction of the new coding system...

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..To determine a high-risk group of visible minority women in Canada who do not participate in cervical cancer screening and the reasons why they do not participate...

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..73 to 2.58]). CONCLUSIONS: These findings are suggestive of a protective effect of statin therapy in symptomatic patients pre-treated at the time of carotid endarterectomy, though this needs confirmation in a randomized controlled trial...

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..Assess the validity of ICD-9-CM and ICD-10 epilepsy coding from an emergency visit (ER) and a hospital discharge abstract database (DAD)...

..To assess validity of diabetes International Classification of Disease (ICD) 9 and 10 coding algorithms from administrative data using physicians' charts as the 'gold standard' across time periods and geographic regions...

..Survival of PBC patients is significantly lower than that of the general population, emphasizing the importance of developing new therapies for this condition...

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..Hypertension is one of the most common medical conditions complicating pregnancy, and is a major contributor to maternal, fetal and neonatal morbidity and mortality in Canada...

..Large-scale epidemiological studies of primary biliary cirrhosis (PBC) have been hindered by difficulties in case ascertainment...

..The authors have previously reported on Canada-wide outcomes of coronary artery bypass graft (CABG) surgery for 1992/93 through 1995/96...

..The purpose of this study is to assess the validity of the Charlson index in incident dialysis patients and modify the index for use specifically in this patient population...

..In particular, a low rate of short-term adverse events is required for the long-term benefits of CE to accrue over time...

..Epilepsy imposes a significant burden on society. The objective of this study was to estimate health resource utilization (HRU) over a 1-year period in epilepsy patients, using administrative databases...

..In this population-based study, we examined outcomes of acetaminophen overdose, with particular attention to these risk factors...

..The process of managing CVD risk for the Chinese immigrants was characterized by their extraordinary diligence in seeking multiple sources of information to enable them to manage their health...

..A considerable number of patients receive chelation therapy to treat their coronary artery disease. However, there is no current empirical evidence to support its use...

..The goal of our study was to compare the incidence of motor vehicle accidents (MVA), attempted or completed suicides, and injuries inflicted by others between individuals with and without epilepsy...

..Although it may be neither feasible nor desirable to meet all patient expectations, increased focus on wait times and staff communication may increase both ED efficiency and patient satisfaction...

..Many studies have relied on administrative data to identify patients with heart failure (HF)...

..non-FP) and presence or absence of previous referrals define unique DEC patient subgroups. Attention to the relative size and service needs of these subgroups is relevant to the planning of diabetes services...

..Prior studies have found associations between surgeon and hospital case volumes and outcomes after carotid endarterectomy (CEA), but they have not simultaneously assessed the importance of a number of surgeon and hospital characteristics...

..The objective of this study was to determine the association between OSA and DM in a large cohort of patients referred for sleep diagnostic testing...

..To compare patients with and without mental disorders who seek services from a complementary therapy practitioner with regard to quality of life, reasons for seeking complementary therapies, complaints, and physical conditions...

..Further development of online resources should address the needs of users. Evaluation of these resources is called for...

..To assess the effects of hospital care by a specialist or nonspecialist physician, and by volume of treated patients, on mortality among hospitalized patients with newly diagnosed heart failure...

..Postoperative complications are a significant source of morbidity and mortality. There are limited studies, however, assessing the impact of common postoperative complications on health care resource utilization...

..Outcomes and process of care in patients with newly diagnosed congestive heart failure were not uniformly distributed with age. The elderly had greater mortality but received less therapy...

..With the transition into ICD-10 coding worldwide, an ICD-10 version of the Deyo adaptation was developed and validated using population-based hospital data from Victoria, Australia...

..However, significant variation in outcomes was noted between provinces. The results of this study provide the first comprehensive account of valve surgery outcomes across Canada...

..High rates of CE are associated with lower rates of appropriateness for both surgeons and hospitals. That 1 in 10 CEs is done inappropriately suggests the need for preoperative assessment of appropriateness...

..However, significant differences in provincial outcomes were found. This suggests that regionalization across provincial boundaries may be needed to promote higher surgeon and hospital case volumes and thus improve outcomes...

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