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Author Josiane Courteau

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Hydroxychloroquine (HCQ): an observational cohort study in primary and secondary prevention of pneumonia in an at-risk population

Alain Vanasse, Josiane Courteau, Yohann Chiu, Andre Cantin, Richard Leduc,

Background. Recent studies suggest that hydroxychloroquine (HCQ) could be effective against COVID-19. It is reasonable to expect that if HCQ can prevent or reduce the adverse effects of influenza, it may also reduce the effects of COVID-19 in humans. The objective of this study was to test whether HCQ can ... Read more >>

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Healthcare utilization after a first hospitalization for COPD: a new approach of State Sequence Analysis based on the '6W' multidimensional model of care trajectories.

Alain Vanasse, Josiane Courteau, Mireille Courteau, Mike Benigeri, Yohann M Chiu, Isabelle Dufour, Simon Couillard, Pierre Larivée, Catherine Hudon,

BACKGROUND:Published methods to describe and visualize Care Trajectories (CTs) as patterns of healthcare use are very sparse, often incomplete, and not intuitive for non-experts. Our objectives are to propose a typology of CTs one year after a first hospitalization for Chronic Obstructive Pulmonary Disease (COPD), and describe CT types and ... Read more >>

BMC Health Serv Res (BMC health services research)
[2020, 20(1):177]

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Risk of Frequent Emergency Department Use Among an Ambulatory Care Sensitive Condition Population: A Population-based Cohort Study.

Catherine Hudon, Josiane Courteau, Yohann M Chiu, Maud-Christine Chouinard, Marie-France Dubois, Nicole Dubuc, Nicolas Elazhary, Francois Racine-Hemmings, Isabelle Dufour, Alain Vanasse,

BACKGROUND:A small fraction of patients use a disproportionately large amount of emergency department (ED) resources. Identifying these patients, especially those with ambulatory care sensitive conditions (ACSC), would allow health care professionals to enhance their outpatient care. OBJECTIVE:The objectives of the study were to determine predictive factors associated with frequent ED ... Read more >>

Med Care (Medical care)
[2020, 58(3):248-256]

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Conducting gender-based analysis of existing databases when self-reported gender data are unavailable: the GENDER Index in a working population.

Anaïs Lacasse, M Gabrielle Pagé, Manon Choinière, Marc Dorais, Bilkis Vissandjée, Hermine Lore Nguena Nguefack, Joel Katz, Oumar Mallé Samb, Alain Vanasse, ,

OBJECTIVES:Growing attention has been given to considering sex and gender in health research. However, this remains a challenge in the context of retrospective studies where self-reported gender measures are often unavailable. This study aimed to create and validate a composite gender index using data from the Canadian Community Health Survey ... Read more >>

Can J Public Health (Canadian journal of public health = Revue canadienne de sante publique)
[2020, 111(2):155-168]

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Persistent frequent emergency department users with chronic conditions: A population-based cohort study.

Yohann Moanahere Chiu, Alain Vanasse, Josiane Courteau, Maud-Christine Chouinard, Marie-France Dubois, Nicole Dubuc, Nicolas Elazhary, Isabelle Dufour, Catherine Hudon,

BACKGROUND:Frequent emergency department users are patients cumulating at least four visits per year. Few studies have focused on persistent frequent users, who maintain their frequent user status for multiple consecutive years. This study targets an adult population with chronic conditions, and its aims are: 1) to estimate the prevalence of ... Read more >>

PLoS ONE (PloS one)
[2020, 15(2):e0229022]

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Frequent emergency department use by older adults with ambulatory care sensitive conditions: A population-based cohort study.

Isabelle Dufour, Yohann Chiu, Josiane Courteau, Maud-Christine Chouinard, Nicole Dubuc, Catherine Hudon,

AIM:To identify factors associated with frequent emergency department (ED) use among older adults with ambulatory care sensitive conditions. METHODS:This was a retrospective cohort study using databases from the Régie de l'assurance maladie du Québec. We included community-dwelling individuals aged ≥65 years in the Province of Quebec (Canada), who consulted in ED ... Read more >>

Geriatr Gerontol Int (Geriatrics & gerontology international)
[2020, 20(4):317-323]

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Feature-weighted survival learning machine for COPD failure prediction.

Jianfei Zhang, Shengrui Wang, Josiane Courteau, Lifei Chen, Gongde Guo, Alain Vanasse,

Chronic obstructive pulmonary disease (COPD) yields a high rate of failures such as hospital readmission and death in the United States, Canada and worldwide. COPD failure imposes a significant social and economic burden on society, and predicting such failure is crucial to early intervention and decision-making, making this a very ... Read more >>

Artif Intell Med (Artificial intelligence in medicine)
[2019, 96:68-79]

Cited: 1 time

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Greater eosinophil counts at first COPD hospitalization are associated with more readmissions and fewer deaths.

Qing Li, Pierre Larivée, Josiane Courteau, Simon Couillard, Thomas G Poder, Nathalie Carrier, Maryse Bélanger, Alain Vanasse,

Purpose:The impacts of high blood eosinophil count (HBEC) at admission for COPD exacerbation on posthospitalization outcomes are still unclear. Previous studies have focused on its associations with first readmission rates; yet, its impacts on longitudinal outcomes such as subsequent readmissions still have to be explored. The main objective of this ... Read more >>

Int J Chron Obstruct Pulmon Dis (International journal of chronic obstructive pulmonary disease)
[2019, 14:331-341]

Cited: 3 times

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Eosinophil counts in first COPD hospitalizations: a 1-year cost analysis in Quebec, Canada.

Thomas G Poder, Nathalie Carrier, Maryse Bélanger, Simon Couillard, Josiane Courteau, Pierre Larivée, Alain Vanasse,

Background:Exacerbations explain much of the cost of COPD. Higher blood eosinophil cell counts at admission for acute exacerbation of COPD increase the risk of subsequent exacerbations and hospitalizations. However, there is no literature on the economic burden of patients with this inflammatory profile. The objective of this study is to ... Read more >>

Int J Chron Obstruct Pulmon Dis (International journal of chronic obstructive pulmonary disease)
[2018, 13:3065-3076]

Cited: 3 times

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Eosinophil counts in first COPD hospitalizations: a comparison of health service utilization.

Maryse Bélanger, Simon Couillard, Josiane Courteau, Pierre Larivée, Thomas G Poder, Nathalie Carrier, Kim Girard, Felix-Antoine Vézina, Alain Vanasse,

Purpose:Current evidence suggests that a higher blood eosinophil cell count at admission for acute exacerbation of COPD (AECOPD) is associated with a favorable response to systemic steroids. However, the impact of blood eosinophil counts at admission on post-hospitalization outcomes is still unclear. The main objective of this study is to ... Read more >>

Int J Chron Obstruct Pulmon Dis (International journal of chronic obstructive pulmonary disease)
[2018, 13:3045-3054]

Cited: 5 times

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Predicting One-year Mortality After a "First" Hospitalization for Chronic Obstructive Pulmonary Disease: An Eight-Variable Assessment Score Tool.

Alain Vanasse, Josiane Courteau, Simon Couillard, Marie-France Beauchesne, Pierre Larivée,

Several authors have studied predictors of outcomes following a hospitalization for chronic obstructive pulmonary disease (COPD); however, few have reported outcomes following a first hospitalization for COPD. The objective is to develop a predictive mortality risk model in patients surviving a first hospitalization for COPD. This is a retrospective cohort ... Read more >>

COPD (COPD)
[2017, 14(5):490-497]

Cited: 5 times

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Factors associated with chronic frequent emergency department utilization in a population with diabetes living in metropolitan areas: a population-based retrospective cohort study.

Catherine Hudon, Josiane Courteau, Cynthia Krieg, Alain Vanasse,

A small proportion of patients utilizes a disproportionately large amount of emergency department (ED) resources. Being able to properly identify chronic frequent ED users, i.e. frequent ED users over a multiple-year period, would allow healthcare professionals to intervene before it occurs and, if possible, redirect these patients to more appropriate ... Read more >>

BMC Health Serv Res (BMC health services research)
[2017, 17(1):525]

Cited: 3 times

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[Initiating an antipsychotic drug treatment for schizophrenia: the situation in Quebec, Canada, from 1998 to 2006].

Jean-Daniel Carrier, Lucie Blais, Alan Cohen, Josiane Courteau, Pasquale Roberge, Annie Larouche, Sylvain Grignon, Marie-Josée Fleury, Alain Lesage, Marie-France Demers, Marc-André Roy, André Delorme, Alain Vanasse,

Objectives To describe factors associated with the following characteristics of the first prescription of an antipsychotic drug treatment (ADT): 1) prescribing physician type (psychiatrist vs. general practitioner); 2) second-generation vs. first-generation antipsychotic drug; 3) in conjunction with at least one additional antipsychotic drug (multitherapy); 4) never renewed by the patient.Methods ... Read more >>

Sante Ment Que (Sante mentale au Quebec)
[2017, 42(1):85-103]

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Eosinophils in COPD Exacerbations Are Associated With Increased Readmissions.

Simon Couillard, Pierre Larivée, Josiane Courteau, Alain Vanasse,

BACKGROUND:A subset of patients with COPD demonstrates eosinophilic inflammation either in their sputum or blood. Previous studies regarding the association between increased blood eosinophil levels and poor readmission outcomes are conflicting. The goal of this study was to investigate outcomes following severe COPD exacerbations in patients with higher blood eosinophil ... Read more >>

Chest (Chest)
[2017, 151(2):366-373]

Cited: 42 times

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Predicting chronic benzodiazepine use in adults with depressive disorder: Retrospective cohort study using administrative data in Quebec.

Jean-Daniel Carrier, Pasquale Roberge, Josiane Courteau, Alain Vanasse,

To identify predictive variables of incident chronic benzodiazepine (BZD) use that could be assessed by prescribing physicians.Retrospective cohort study using public health and drug insurance administrative data.Quebec.New adult BZD users from January 1, 1999, to March 31, 2006, with a diagnosis of depressive disorder in the previous year were included. ... Read more >>

Can Fam Physician (Canadian family physician Medecin de famille canadien)
[2016, 62(8):e473-83]

Cited: 2 times

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Family Medicine Forum Research Proceedings 2015: Toronto, Ont.

Can Fam Physician (Canadian family physician Medecin de famille canadien)
[2016, 62(2):S1-S66]

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Proximity and emergency department use: Multilevel analysis using administrative data from patients with cardiovascular risk factors.

Patrick Bergeron, Josiane Courteau, Alain Vanasse,

To determine if geographic proximity to an emergency department (ED) is related to ED use in a metropolitan population of patients with cardiovascular risk factors.Population-based, retrospective cohort study.The census metropolitan area of Montreal, Que.Cohort of 99 400 patients with diabetes, hypertension, or dyslipidemia in 2007 without a history of cardiovascular ... Read more >>

Can Fam Physician (Canadian family physician Medecin de famille canadien)
[2015, 61(8):e391-7]

Cited: 2 times

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Family Medicine Forum Research Proceedings 2014/Compte rendu sur la recherche au Forum en médecine familiale 2014.

Can Fam Physician (Canadian family physician Medecin de famille canadien)
[2015, 61(2):S1-S76]

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Neighbourhood immigration, health care utilization and outcomes in patients with diabetes living in the Montreal metropolitan area (Canada): a population health perspective.

Alain Vanasse, Josiane Courteau, Maria Gabriela Orzanco, Patrick Bergeron, Alan A Cohen, Théophile Niyonsenga,

Understanding health care utilization by neighbourhood is essential for optimal allocation of resources, but links between neighbourhood immigration and health have rarely been explored. Our objective was to understand how immigrant composition of neighbourhoods relates to health outcomes and health care utilization of individuals living with diabetes.This is a secondary ... Read more >>

BMC Health Serv Res (BMC health services research)
[2015, 15:146]

Cited: 3 times

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Beta-blockers are associated with increased risk of first cardiovascular events in non-diabetic hypertensive elderly patients.

Frederieke M Brouwers, Josiane Courteau, Alan A Cohen, Paul Farand, Lyne Cloutier, Shabnam Asghari, Alain Vanasse,

PURPOSE: Although treatment should be considered for elderly patients with hypertension (HTN), the effectiveness of beta-blockers (BBs) compared with other medications is less clear. This study's objective is to assess the relative effectiveness of BBs in elderly primary prevention patients with uncomplicated HTN. METHODS: This is a population-based nested case-control ... Read more >>

Pharmacoepidemiol Drug Saf (Pharmacoepidemiology and drug safety)
[2014, 23(11):1139-1146]

Cited: 2 times

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The adequacy of pharmaceutical treatment of schizophrenia in Quebec varies with age, but is not influenced by sex or neighbourhood deprivation.

Frederieke M Brouwers, Josiane Courteau, Jean-Pierre Grégoire, Jocelyne Moisan, Sophie Lauzier, Alain Lesage, Marie-Josée Fleury, Alain Vanasse,

Though high discontinuation rates for antipsychotics (APs) by patients with schizophrenia are frequently reported, the percentage of patients receiving pharmaceutical treatment for schizophrenia in routine practice in accordance with international clinical guidelines is unknown. Further, it is unknown if these rates are influenced by levels of neighbourhood deprivation or by ... Read more >>

Can J Psychiatry (Canadian journal of psychiatry. Revue canadienne de psychiatrie)
[2013, 58(8):456-465]

Cited: 3 times

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Prevalence of claims-based recurrent low back pain in a Canadian population: a secondary analysis of an administrative database.

Nicolas Beaudet, Josiane Courteau, Philippe Sarret, Alain Vanasse,

There is a vast literature reporting that the point prevalence of low back pain (LBP) is high and increasing. It is also known that a large proportion of acute LBP episodes are recurrent within 12 months. However, few studies report the annual trends in the prevalence of recurrent LBP or ... Read more >>

BMC Musculoskelet Disord (BMC musculoskeletal disorders)
[2013, 14:151]

Cited: 10 times

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Validating metabolic syndrome through principal component analysis in a medically diverse, realistic cohort.

Francis Dusseault-Belanger, Alan A Cohen, Marie-France Hivert, Josiane Courteau, Alain Vanasse,

BACKGROUND: The concept of metabolic syndrome has been subject to etiological and clinical controversies in recent years. Associations among the five risk factors (obesity, hypertension, hyperglycemia, high triglyceride levels, and low high-density lipoprotein cholesterol) may help establish the validity of the concept, especially in a cohort representative of an actual ... Read more >>

Metab Syndr Relat Disord (Metabolic syndrome and related disorders)
[2013, 11(1):21-28]

Cited: 3 times

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Does elapsed time between first diagnosis of schizophrenia and migration between health territories vary by place of residence? A survival analysis approach.

André Ngamini Ngui, Alan A Cohen, Josiane Courteau, Alain Lesage, Marie-Josée Fleury, Jean-Pierre Grégoire, Jocelyne Moisan, Alain Vanasse,

Migration of patients with schizophrenia might influence health care access and utilization. However, the time between diagnosis and migration of these patients has not yet been explored. We studied the first migration between health territories of 6873 patients newly diagnosed with schizophrenia in Quebec in 2001, aiming to describe the ... Read more >>

Health Place (Health & place)
[2013, 20:66-74]

Cited: 8 times

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[Health inequities in mood disorders based on material and social deprivation in dwelling sectors ].

Alain Vanasse, Josiane Courteau, Alain Lesage, Marie-Josée Fleury, Jean-Pierre Grégoire, Jocelyne Moisan, Sophie Lauzier, Claude Bergeron,

To compare mood disorder (MD) prevalence in Quebec in 2006, and compare health services and medication use, mortality and morbidity in patients with MD based on sex and the dwelling sector level of material and social deprivation. The objective was also to identify subgroups of individuals using health services in ... Read more >>

Can J Psychiatry (Canadian journal of psychiatry. Revue canadienne de psychiatrie)
[2012, 57(12):772-781]

Cited: 5 times

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