Guy Grenier

Dr. Guy Grenier

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
MFMarie-Josée FLEURY
Marie-Josée FLEURY
ANAndré Ngamini Ngui
André Ngamini Ngui
JBJean-Marie Bamvita
Jean-Marie Bamvita
GGGuy Grenier
Guy Grenier
JCJean Caron
Jean Caron
This study was designed to identify: (1) predictors of 12-month healthcare service utilization for mental health reasons, framed by the Andersen model, among a population cohort in an epidemiological catchment area; and (2) correlates associated with healthcare service utilization for mental health reasons among individuals with and without mental disorders respectively. Analyses comprised univariate, bivariate, and multiple regression analyses. Being male, having poor quality of life, possessing better self-perception of physical health, and suffering from major depressive episodes, panic disorder, social phobia, and emotional problems predicted healthcare service utilization for mental health reasons. Among individuals with mental disorders, needs factors (psychological distress, impulsiveness, emotional problems, victim of violence, and aggressive behavior) and visits to healthcare professionals were associated with healthcare service utilization for mental health reasons. Among individuals without mental disorders, healthcare service utilization for mental health reasons is strongly associated with enabling factors such as social support, income, environmental variables, and self-perception of the neighborhood. Interventions facilitating social cohesion and social solidarity in neighborhood settings may reduce the need to seek help among individuals without mental disorders. Furthermore, in their capacity as frontline professionals, general practitioners should be more sensitive in preventing, detecting, and treating mental disorders in routine primary care.

1 January 2013 in Health and Quality of Life Outcomes
Verified
Journal Article
Open access
PDF file
MFMarie-Josée FLEURY
Marie-Josée FLEURY
GGGuy Grenier
Guy Grenier
JBJean-Marie Bamvita
Jean-Marie Bamvita
JTJacques Tremblay
Jacques Tremblay
Norbert SchmitzNorbert Schmitz
Norbert Schmitz
JCJean Caron
Jean Caron
Since the end of the 20th century, quality of life has become a key outcome indicator in planning and evaluation of health services. From a sample of 297 users with severe mental disorders from Montreal (Canada), this study aimed to identify the key predictors of subjective quality of life (SQOL). Users were recruited and interviewed from December 2008 to September 2010 and re-interviewed approximately 18 months later. A comprehensive framework including socio-demographic data, clinical, needs and functionality variables, negative life events, social support and healthcare service use, and appreciation data were considered as predictors. Clinical records and eight standardized instruments were used. Lower severity of needs, schizophrenia, better social integration, better reassurance of worth, fewer drug abuse problems, and living in supervised housing are predictors of SQOL. With regard to needs, absence or lower severity of needs in the areas of company, daytime activities, social exclusion, safety to self, and benefits are linked to SQOL. Reducing the severity of needs is especially beneficial to ensure a higher SQOL for users with severe mental disorders. To improve SQOL, priority must be given to programs and interventions that promote the development of a stimulating and supportive social network, and maintain a plurality of residential services matching the functional abilities of users.

1 January 2012 in International Journal for Equity in Health
Verified
Journal Article
Open access
PDF file
MFMarie-Josée FLEURY
Marie-Josée FLEURY
GGGuy Grenier
Guy Grenier
JBJean-Marie Bamvita
Jean-Marie Bamvita
MPMichel Perreault
Michel Perreault
YKYan Kestens
Yan Kestens
JCJean Caron
Jean Caron
This study sought to identify factors associated with health service utilisation by individuals with mental disorders in a Canadian catchment area.

10 March 2017 in International Journal of Integrated Care
Verified
Journal Article
Open access
PDF file
MFMarie-Josée FLEURY
Marie-Josée FLEURY
GGGuy Grenier
Guy Grenier
CVCatherine Vallée
Catherine Vallée
DADenise Aubé
Denise Aubé
LFLambert Farand
Lambert Farand
This study evaluates implementation of the Quebec Mental Health Reform (2005-2015), which promoted the development of integrated service networks, in 11 local service networks organized into four territorial groups according to socio-demographic characteristics and mental health services offered. Data were collected from documents concerning networks; structured questionnaires completed by 90 managers and by 16 respondent-psychiatrists; and semi-structured interviews with 102 network stakeholders. Factors associated with implementation and integration were organized according to: 1) reform characteristics; 2) implementation context; 3) organizational characteristics; and 4) integration strategies. While local networks were in a process of development and expansion, none were fully integrated at the time of the study. Facilitators and barriers to implementation and integration were primarily associated with organizational characteristics. Integration was best achieved in larger networks including a general hospital with a psychiatric department, followed by networks with a psychiatric hospital. Formalized integration strategies such as service agreements, liaison officers, and joint training reduced some barriers to implementation in networks experiencing less favourable conditions. Strategies for the implementation of healthcare reform and integrated service networks should include sustained support and training in best-practices, adequate performance indicators and resources, formalized integration strategies to improve network coordination and suitable initiatives to promote staff retention.

15 January 2019 in BMC Emergency Medicine
Verified
Journal Article
Open access
PDF file
MFMarie-Josée FLEURY
Marie-Josée FLEURY
MFMarilyn Fortin
Marilyn Fortin
LRLouis Rochette
Louis Rochette
GGGuy Grenier
Guy Grenier
CHChristophe Huỳnh
Christophe Huỳnh
HVHelen-Maria Vasiliadis
Helen-Maria Vasiliadis
This descriptive study compared 2014–15 to 2005–06 data on the quality of mental health services (MHS) in relation to emergency room (ER) use to assess the impact of the 2005 Quebec MH reform regarding access, continuity and appropriateness of care for patients with mental illnesses (PMI). Data emanated from the Quebec Integrated Chronic Disease Surveillance System (Quebec/Canada). Participants (865,255 for 2014–15; 817,395 for 2005–06) were age 12 or over, with at least one MI, including substance use disorders (SUD), diagnosed during an ER visit, outpatient treatment or hospitalization. Variables included: access (ER use/frequency, hospitalization rates, outpatient consultations preceding an ER visit), care continuity (outpatient consultations following an ER visit/hospitalization, consecutive returns to the ERs), and care appropriateness (high ER use, recurrence of yearly ER visits, length of hospitalization). Frequency distributions were calculated on sex, age and geographic area for ER visits/hospitalizations in 2014–15, and between 2014 and 15 and 2005–06. PMI accounted for 12 % of the Quebec population in 2014–15 (n = 865,255), of whom 39% visited an ER for any reason. Amount and frequency of ER use and number/length of hospitalizations were almost twice as high for PMI versus patients without MI; 17% of PMI were also high/very high ER users and were frequently hospitalized. Among PMI, ER users were also frequent users of outpatient services despite a lack of follow-up appointments after ER visits or hospitalizations. Findings revealed some positive changes over time, such as decreased ER and hospitalization rates; yet overall access, continuity and appropriateness of care, as measured in this study, remained low. This study demonstrated that the Quebec reform did not produce a substantial impact on ER use or substantially improved care, as hypothesized. Better access and continuity of care should be promoted to reduce the high prevalence of ER use among PMI. Quality improvement in MHS may be realized if ERs are supported by substantial and well-integrated community MH networks.

8 April 2014 in BMC Health Services Research
Verified
Journal Article
Open access
PDF file
MFMarie-Josée FLEURY
Marie-Josée FLEURY
GGGuy Grenier
Guy Grenier
JBJean-Marie Bamvita
Jean-Marie Bamvita
JCJean Caron
Jean Caron
This study has a dual purpose: 1) identify determinants of healthcare service utilization for mental health reasons (MHR) in a Canadian (Montreal) catchment area; 2) determine the patterns of recourse to healthcare professionals in terms of frequency of visits and type of professionals consulted, and as it relates to the most prevalent mental disorders (MD) and psychological distress.