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.

Few studies have examined predictors of recurrent high ED use. This study assessed predictors of recurrent high ED use over two and three consecutive years, compared with high one-year ED use. This five-year longitudinal study is based on a cohort of 3121 patients who visited one of six Quebec (Canada) ED at least three times in 2014–2015. Multinomial logistic regression was performed. Clinical, sociodemographic and service use variables were identified based on data extracted from health administrative databases for 2012–2013 to 2014–2015. Of the 3121 high ED users, 15% (n = 468) were recurrent high ED users for a two-year period and 12% (n = 364) over three years. Patients with three consecutive years of high ED use had more personality disorders, anxiety disorders, alcohol or drug related disorders, chronic physical illnesses, suicidal behaviors and violence or social issues. More resided in areas with high social deprivation, consulted frequently with psychiatrists, had more interventions in local community health service centers, more prior hospitalizations and lower continuity of medical care. Three consecutive years of high ED use may be a benchmark for identifying high users needing better ambulatory care. As most have multiple and complex health problems, higher continuity and adequacy of medical care should be prioritized.