Characteristics of frequent users of emergency departments in Alberta and Ontario, Canada: an administrative data study.

OBJECTIVE: Frequent users to emergency departments (EDs) are a diverse group of patients accounting for a disproportionate number of ED presentations. This study examined sociodemographic and ED visit characteristics of adult high-system users in two Canadian provinces. METHODS: Cohorts of high-system users were created for Alberta and Ontario including patients with the top 10% of presentations in the National Ambulatory Care Reporting System (April 2015-March 2016). Controls were random samples of non-high-system user patients. Sociodemographic and ED visits data were used to predict high-system user group membership in a multivariable logistic regression model. RESULTS: There were 579,674 high-system users and 2,115,960 controls. High-system users were more likely to be female [odds ratio (OR) = 1.1, 95% confidence interval (CI) 1.1,1.1], older (OR 1.02 per 5 years, 95% CI 1.02,1.02), from the lowest-income quintile (OR 1.8, 95% CI 1.7,1.8), and more rural (OR 1.6, 95% CI 1.6,1.6) than controls. High-system users had a higher proportion of presentations by ambulance (OR 1.1 per 0.25 increase, 95% CI 1.1,1.1) and disposition was admission/transfer (OR 1.1 per 0.25 increase, 95% CI 1.1,1.1), left without being seen (OR 1.1, 95% CI 1.1,1.1), or left against medical advice (OR 1.1, 95% CI 1.1,1.1) more often than controls. CONCLUSION: High-system users were more likely to be female, older, live in rural areas and within the lowest-income quintile compared to controls. Their heterogeneity in acuity, comorbid chronic diseases, and limited access to primary care suggests that interventions referring high-system users to primary care may be fruitful in reducing ED utilization by high-system users.

RéSUMé: OBJECTIF: Les utilisateurs fréquents des services d'urgence sont un groupe diversifié de patients qui représentent un nombre disproportionné de présentations aux services d'urgence. Cette étude a examiné les caractéristiques sociodémographiques et les visites aux urgences de grands utilisateurs adultes du système de santé dans deux provinces canadiennes. MéTHODE: Des cohortes de grands utilisateurs du système de santé ont été créées pour l'Alberta et l'Ontario, y compris les patients ayant fait l'objet des 10 % de présentations les plus importantes dans le système national d'information sur les soins ambulatoires (avril 2015-mars 2016). Les contrôles étaient des échantillons aléatoires des patients ne faisant pas partie des grands utilisateurs. Les données sociodémographiques et les données sur les visites aux urgences ont été utilisées pour prédire l'appartenance à un groupe de grands utilisateurs du système dans un modèle de régression logistique multivariable. RéSULTATS: Il y avait 579 674 de grands utilisateurs et 2 115 960 témoins. Les grands utilisateurs de système étaient plus susceptibles d'être des femmes (rapport des cotes [RC] = 1,1, intervalle de confiance à 95 % (IC) 1,1, 1,1), plus âgés (RC = 1,02 tous les 5 ans, IC à 95 % 1,02, 1,02), d'après quintile de revenu le plus bas (RC = 1,8, IC à 95 % 1,7,1,8), et plus rural (RC = 1,6, IC à 95 % 1,6,1,6) que les témoins. Les grands utilisateurs du système avaient une proportion plus élevée de présentations par ambulance (RC = 1,1 pour une augmentation de 0,25, IC à 95 % 1,1, 1,1) et la disposition était l'admission / transfert (RC = 1,1 pour une augmentation de 0,25, IC à 95 % 1,1, 1,1), parti sans être vu (OR = 1,1, IC à 95% 1,1, 1,1), ou parti contre l'avis médical (OR = 1,1, IC à 95 % 1,1, 1,1) plus souvent que les témoins. CONCLUSIONS: Les grands utilisateurs du système étaient plus susceptibles d'être des femmes, des personnes âgées, vivant dans des zones rurales et se situant dans le quintile de revenu le plus bas, par rapport aux témoins. Leur hétérogénéité en termes d'acuité, de comorbidité des maladies chroniques et d'accès limité aux soins primaires suggère que les interventions qui orientent les grands utilisateurs du haut système vers les soins primaires peuvent être fructueuses pour réduire l'utilisation des urgences par les grands utilisateurs du système.

Frequent users of emergency departments and patient flow in Alberta and Ontario, Canada: an administrative data study.

BACKGROUND: This paper describes and compares patient flow characteristics of adult high system users (HSUs) and control groups in Alberta and Ontario emergency departments (EDs), Canada. METHODS: Annual cohorts of HSUs were created by identifying patients who made up the top 10% of ED users (by count of ED presentations) in the National Ambulatory Care Reporting System during 2011-2016. Random samples of patients not in the HSU groups were selected as controls. Presentation (e.g., acuity) and ED times (e.g., time to physician initial assessment [PIA], length of stay) data were extracted and described. The length of stay for 2015/2016 data was decomposed into stages and Cox models compared time between stages. RESULTS: There were 20,343,230 and 18,222,969 ED presentations made by 7,032,655 and 1,923,462 individuals in the control and HSU groups, respectively. The Ontario groups had higher acuity than the Alberta groups: about 20% in the Ontario groups were from the emergent level whereas Alberta had 11-15%. Time to PIA was similar across provinces and groups (medians of 60 min to 67 min). Lengths of stay were longest for Ontario HSUs (median = 3 h) and shortest for Alberta HSUs (median = 2.2 h). HSUs had shorter times to PIA (hazard ratio [HR] = 1.03; 95% confidence interval [CI] 1.02,1.03), longer times from PIA to decision (HR = 0.84; 95%CI 0.84,0.84), and longer times from decision to leaving the ED (HR = 0.91; 95%CI 0.91,0.91). CONCLUSIONS: Ontario HSUs had higher acuity and longer ED lengths of stay than the other groups. In both provinces, HSU had shorter times to PIA and longer times after assessment.

Multi-site intervention to improve emergency department care for patients who live with opioid use disorder: A quantitative evaluation.

BACKGROUND: Opioid use disorder is a major public health crisis, and evidence suggests ways of better serving patients who live with opioid use disorder in the emergency department (ED). A multi-disciplinary team developed a quality improvement project to implement this evidence. METHODS: The intervention was developed by an expert working group consisting of specialists and stakeholders. The group set goals of increasing prescribing of buprenorphine/naloxone and providing next day walk-in referrals to opioid use disorder treatment clinics. From May to September 2018, three Alberta ED sites and three opioid use disorder treatment clinics worked together to trial the intervention. We used administrative data to track the number of ED visits where patients were given buprenorphine/naloxone. Monthly ED prescribing rates before and after the intervention were considered and compared with eight nonintervention sites. We considered whether patients continued to fill opioid agonist treatment prescriptions at 30, 60, and 90 days after their index ED visit to measure continuity in treatment. RESULTS: The intervention sites increased their prescribing of buprenorphine/naloxone during the intervention period and prescribed more buprenorphine/naloxone than the controls. Thirty-five of 47 patients (74.4%) discharged from the ED with buprenorphine/naloxone continued to fill opioid agonist treatment prescriptions 30 days and 60 days after their index ED visit. Thirty-four patients (72.3%) filled prescriptions at 90 days. CONCLUSIONS: Emergency clinicians can effectively initiate patients on buprenorphine/naloxone when supports for this standardized evidence-based care are in place within their practice setting and timely follow-up in community is available.

Return on Investment of the Primary Health Care Integrated Geriatric Services Initiative Implementation.

BACKGROUND: Since June 2017, the Primary Health Care Integrated Geriatric Services Initiative (PHC IGSI) has been implemented in Alberta, Canada to, among other aims, reduce costs of unplanned health service utilization while maximizing the utilization of available community resources to support people living with dementia living in communities. AIM OF THE STUDY: We performed an economic evaluation of this initiative to inform policy regarding sustainability, scale up and spread. METHODS: We used a cohort design together with a difference-in-difference approach and a propensity score matching technique to calculate impacts of the intervention on patient's health service utilization, including inpatient, outpatient and physician services, as well as prescription drugs. We then used a decision tree to compare between benefits and costs of the intervention and reported net benefits (NB) and return on investment ratios (ROI). We used a health system perspective and a time horizon of 1 year. Both deterministic and probabilistic sensitivity analyses were performed for the uncertainty of parameters. We analyzed real-world data extracted from the Alberta Health Administrative Databases. All costs/savings were inflated to 2019 CAD (CAD 1 \sim = USD 0.75) using the Canadian Consumer Price Index. RESULTS: The intervention reduced the use of hospital (inpatient, emergency, and outpatient) services by increasing the use of community services (physician and prescription drug). As hospital services are expensive, the PHC IGSI community intervention resulted in a NB from CAD 554 to 4,046 per patient-year for the health system, and a ROI from 1.3 to 3.1 meaning that every CAD invested in PHC IGSI would bring CAD 1.3 to 3.1 in return. The probability of PHC IGSI to be cost-saving was 56.4% to 69.3%. IMPLICATIONS FOR HEALTH CARE PROVISION AND USE: The PHC IGSI is cost-effective in Alberta. IMPLICATIONS FOR HEALTH POLICY: The savings would be larger if the initiative is sustained, scaled up and spread because of not only a reduced cost of intervention in the sustainability phase, but also because of the increased number of patients that would be impacted. IMPLICATIONS FOR FURTHER RESEARCH: Future studies taking a societal perspective to also include costs for families and health and social sectors at the community level, would be desirable. Additionally, future works to determine how wellbeing is impacted by the PHC IGSI as vertical and horizontal integration interventions are implemented at the community level, are essential to undertake. Finally, in addition to people living with dementia, the PHC IGSI also supports people living in the community with frailty and other geriatric syndromes, therefore, the cost-savings estimated in this study are likely underestimated.