Factors predicting patient use of the emergency department: a retrospective cohort study

Background:

Many studies have shown the tendency for people without a regular care provider or primary physician to make greater use of emergency departments. We sought to determine the effects of three aspects of care provided by primary physicians (physician specialty, continuity of care and comprehensiveness of care) on their patients’ use of the emergency department.

Methods:

Using provincial administrative databases, we created a cohort of 367 315 adults aged 18 years and older. Participants were residents of urban areas of Quebec. Affiliation with a primary physician, the specialty of this physician (i.e., family physician v. specialist), continuity of care (as measured using the Usual Provider Continuity index) and comprehensiveness of care (i.e., number of complete annual examinations) were measured among participants (n = 311 701) who had visited a physician three or more times during a two-year baseline period. We used multivariable negative binomial regression to investigate the relationships between measures of care and the number of visits to emergency departments during a 12-month follow-up period.

Results:

Among participants under 65 years of age, emergency department use was higher for those not affiliated than for those affiliated with a family physician (incidence rate ratio [IRR] 1.11, 95% confidence interval [CI] 1.05–1.16) or a specialist (IRR 1.10, 95% CI 1.04–1.17). Among patients aged 65 years and older, having a specialist primary physician, as opposed to a family physician, predicted increased use of the emergency department (IRR 1.13, 95% CI 1.09–1.17). Greater continuity of care with a family physician predicted less use of the emergency department only among participants who made 25 or more visits to a physician during the baseline period. Greater continuity of care with a specialist predicted less use of the emergency department overall, particularly among participants with intermediate numbers of multimorbidities and admissions to hospital. Greater comprehensiveness of care by family physicians predicted less use of the emergency department.

Interpretation:

Efforts to increase the proportion of adults affiliated with a family physician should target older adults, people who visit physicians more frequently and people with multiple comorbidities and admissions to hospital.Reforming primary care in Canada has been stimulated in part by increased crowding of emergency departments and evidence that their use, particularly for nonurgent care, may be related to inadequate primary care in the community.^1,2 Restructuring efforts, such as encouraging family physicians to work in multidisciplinary group practices with 24-hour access, are challenged by a relative shortage of family physicians.³ These issues are of particular importance in Quebec; despite relatively high numbers of family physicians per capita, in comparison with other provinces, residents of Quebec have the lowest rates of affiliation with a family physician and have one of the highest rates of seeing specialists.^4,5 In addition, residents of Quebec have among the highest rates of visits to emergency departments in international comparative studies.^6–8Research is needed into the effect that affiliation with a specialist rather than a family physician has on patients’ use of the emergency department, as is research into the continuity and comprehensiveness of care provided by the primary physician, regardless of specialty.Many studies have shown the tendency for people without a regular care provider to use the emergency department more often than people who have a primary physician.^1,9,10 Greater continuity of care with a primary physician has also been associated with fewer visits to the emergency department, but much of this research is cross-sectional, making causal interpretation difficult.¹¹ Furthermore, the distinction between continuity with a family physician versus a specialist primary physician has not been made, although one American study reported that having a specialist primary physician was associated with increased use of emergency departments.⁹We sought to determine whether certain factors predicted patients’ subsequent use of emergency departments, such as the specialty of their primary physician, the continuity of care with that physician and the comprehensiveness of care provided by that physician. To determine whether certain subgroups of the population may derive greater benefit from a particular type of care, we examined the potentially modifying effects of demographic factors, health status and previous use of health services. We restricted our study to residents of urban areas of Quebec for three reasons: rural residents visit the emergency department for primary care more often than residents of urban areas;¹² most specialist care is provided in urban areas; and primary care services in rural areas are more likely to be provided by salaried physicians, whose information is not available in the billing database.     

Focus: Sex and Gender Health: Patient Preference for Physician Gender in the Emergency Department

Despite historical gender bias against female physicians, few studies have investigated patients’ physician gender preference in the emergency department (ED) setting. We sought to determine if there is an association between ED patient demographics and physician gender preference. We surveyed patients presenting to an ED to determine association between patient demographics and patient physician gender preference for five ED situations: 1) ‘routine’ visit, 2) emergency visit, 3) ‘sensitive’ medical visit, 4) minor surgical/‘procedural’ visit, and 5) ‘bad news’ delivery. A total of 200 ED patients were surveyed. The majority of ED patients reported no physician gender preference for ‘routine’ visits (89.5 percent), ‘emergent’ visits (89 percent), ‘sensitive’ medical visits (59 percent), ‘procedural’ visits (89 percent) or when receiving ‘bad news’ (82 percent). In the setting of ‘routine’ visits and ‘sensitive’ medical visits, there was a propensity for same-sex physician preference.     

Primary care for nontraumatic illness at the emergency department and the family physician's office.

A total of 1117 visits by patients to two hospital emergency departments and 15 family physicians'' offices for nontraumatic complaints over two 2-week periods were studied. Patients visiting the two settings fell into two distinct subgroups, and they appeared to select where to seek care by the acuteness and duration of the complaint. Several highly significant differences were noted between the two groups: those who visited an emergency department had complaints of shorter duration, underwent more investigations (which more often gave abnormal results), were more likely to undergo investigation for mental symptoms, had more consultations, received counselling and drug therapy less often (but intramuscular injections more often), were admitted to hospital more often, returned for further care for the same complaint less often, complied with disposal instructions less often, were more likely to receive fewer than 5 days'' care and were less likely to receive more than 31 days'' care; those without a family physician more often received additional care (were referred, admitted or asked to return).     

Toward an Understanding of Health Services Use in Women with Binge Eating Disorder

Objectives : This study examined health services use in community samples of 102 white and 60 black women with binge eating disorder (BED), 164 white and 85 black healthy comparison women, and 86 white and 21 black women with a noneating Axis I psychiatric disorder. Research Methods and Procedures : Participants were matched on age, ethnicity, and education and were asked about their use of emergency room visits, outpatient physician visits for medical care, outpatient psychotherapy visits, and days spent in the hospital over the previous 12 months. Total health services use was computed. Results : There were no between‐group differences in outpatient physician visits or inpatient hospital days. Relative to healthy comparison women, women with BED and women with other Axis I disorders had increased total health services use, psychotherapy visits, and emergency department visits. Relative to women with noneating Axis I disorders, women with BED had less use of psychotherapy visits. Although obese white women were more likely to report emergency department visits than obese black women were, nonobese white women were less likely to report emergency department visits than nonobese black women were. Discussion : That health services use by women with BED compared more with that of women with other Axis I disorders than with that of healthy women suggested that BED has clinical significance and is not benign in terms of its impact on the health care system. It appeared, however, that despite the availability of effective treatments, few women with BED received psychotherapy.     

Factors associated with physician follow-up among patients with chest pain discharged from the emergency department

Background:

Many patients with chest pain do not receive follow-up from a physician after discharge from the emergency department despite significant survival benefit associated with follow-up care. Our objective was to evaluate factors associated with physician follow-up to understand this gap in practice.

Methods:

We conducted an observational study involving patients at high risk who were assessed for chest pain and discharged from an emergency department in Ontario between April 2004 and March 2010. We used multivariable logistic regression to determine the association of clinical and nonclinical characteristics with physician follow-up.

Results:

We identified 56 767 patients, of whom 25.1% did not receive any follow-up by a physician, 69.0% were seen by their primary care physician, and 17.3% were seen by a cardiologist within 30 days. Patients who had medical comorbidities and cardiac conditions such as myocardial infarction or heart failure were less likely to have follow-up. In contrast, a previous visit to a primary care physician was associated with the highest odds of having physician follow-up (odds ratio [OR] 6.44, 95% confidence interval [CI] 5.91–7.01). Similarly, a previous visit to a cardiologist was strongly associated with follow-up by a cardiologist (OR 3.01, 95% CI 2.85–3.17). Patients evaluated in emergency departments with the highest tertile of chest pain volume were more likely to receive follow-up from any physician (OR 1.52, 95% CI 1.31–1.77) and from a cardiologist (OR 2.04, 95% CI 1.61–2.57).

Interpretation:

Nonclinical factors are strongly associated with physician follow-up for patients with chest pain after discharge from the emergency department. However, patients with comorbidities and at higher risk for future adverse events are less likely to receive follow-up care.Chest pain is one of the most common presenting symptoms in emergency departments. In Canada, about 500 000 visits to the emergency department are related to chest pain assessment each year.¹ Most of these visits result in discharge after excluding a cardiac diagnosis with an immediate risk of adverse effect.² Current clinical guidelines strongly advocate for patients with chest pain who have been discharged from the emergency department to receive outpatient follow-up with a physician within 72 hours for further assessment or treatment, because many patients remain at risk for future events.³Among patients at high baseline cardiovascular risk who were discharged from the emergency department after assessment of chest pain, our group has previously shown significantly reduced hazard of death or myocardial infarction associated with follow-up with either a primary care physician or a cardiologist within 30 days.² At 1-year postassessment, the rate of death or myocardial infarction was 5.5% among patients who received cardiologist follow-up, 7.7% with primary care follow-up and 8.6% with no physician follow-up.² In addition, we found a considerable gap in practice, with 1 in 4 high-risk patients with chest pain failing to follow-up with a physician within 30 days of assessment in Ontario, Canada.² A better understanding of why physician follow-up does not occur in accordance with guidelines is essential to improve the transition of care from the emergency department to home. Thus, the main objective of our study was to evaluate clinical and nonclinical factors associated with physician follow-up among patients with chest pain after discharge from the emergency department.     

Organisational Factors Induce Prolonged Emergency Department Length of Stay in Elderly Patients – A Retrospective Cohort Study

Study objective

To assess the association of patient and organisational factors with emergency department length of stay (ED-LOS) in elderly ED patients (226565 years old) and in younger patients (<65 years old).

Methods

A retrospective cohort study of internal medicine patients visiting the emergency department between September 1^st 2010 and August 31^st 2011 was performed. All emergency department visits by internal medicine patients 226565 years old and a random sample of internal medicine patients <65 years old were included. Organisational factors were defined as non-medical factors. ED-LOS is defined as the time between ED arrival and ED discharge or admission. Prolonged ED-LOS is defined as ≥75^th percentile of ED-LOS in the study population, which was 208 minutes.

Results

Data on 1782 emergency department visits by elderly patients and 597 emergency department visits by younger patients were analysed. Prolonged ED-LOS in elderly patients was associated with three organisational factors: >1 consultation during the emergency department visit (odds ratio (OR) 3.2, 95% confidence interval (CI) 2.3–4.3), a higher number of diagnostic tests (OR 1.2, 95% CI 1.16–1.33) and evaluation by a medical student or non-trainee resident compared with a medical specialist (OR 4.2, 95% CI 2.0–8.8 and OR 2.3, 95% CI 1.4–3.9). In younger patients, prolonged ED-LOS was associated with >1 consultation (OR 2.6, 95% CI 1.4–4.6). Factors associated with shorter ED-LOS were arrival during nights or weekends as well as a high urgency level in elderly patients and self-referral in younger patients.

Conclusion

Organisational factors, such as a higher number of consultations and tests in the emergency department and a lower seniority of the physician, were the main aspects associated with prolonged ED-LOS in elderly patients. Optimisation of the organisation and coordination of emergency care is important to accommodate the needs of the continuously growing number of elderly patients in a better way.     

Hospital Emergency Services for Children and Adolescents: A One-Year Review at the Vancouver General Hospital

The records of visits of children and adolescents to the emergency department of the Vancouver General Hospital were reviewed during the period July 1, 1965, to June 30, 1966, and the diagnostic and disposal data recorded. One-quarter of all visits were made by children and adolescents. Three-quarters of the visits were made for surgical conditions. There were more males than females in both surgical and medical groups, and the peaks in attendance were of those in the early preschool and late adolescent age groups. Three-quarters of the patients were referred to the family doctor and approximately one-sixth were admitted to the hospital. These findings suggested that while prompt medical attention was usually indicated, the majority of problems were not urgent and that the emergency department was becoming a substitute for the office of the family physician.     

Self Inflicted Injuries among Children in United States – Estimates from a Nationwide Emergency Department Sample

Objective

The objectives of the current study are to provide nationally representative estimates of hospital based emergency department visits (ED) attributed to self inflicted injuries and attempted suicides among children in United States; and to identify potential methods of such intentional self inflicted injuries and attempted suicides.

Methods

The Nationwide Emergency Department Sample (year 2007) was used. All ED visits occurring among children (aged ≤18 years) with an External Cause of Injury for any of self inflicted injuries were selected. Outcomes examined include hospital ED charges and hospitalization charges. All estimates were projected to national levels.

Results

77,420 visits to hospital based emergency departments were attributed to self inflicted injuries among children (26,045 males and 51,370 females). The average age of the ED visits was 15.7 years. 134 patients died in ED’s (106 males and 28 females) and 93 died in hospitals following in-patient admission (75 males and 18 females). A greater proportion of male ED visits were discharged routinely as opposed to female ED visits (51.1% versus 44%). A greater proportion of male ED visits also died in the emergency departments compared to female visits (0.4% versus 0.05%). 17,965 ED visits necessitated admission into same hospital. The mean charge for each ED visit was $1,874. Self inflicted injuries by poisoning were the most frequently reported sources accounting for close to 70% of all ED visits.

Conclusions

Females comprise a greater proportion of ED visits attributed to self inflicted injuries. 227 children died either in the ED’s or in hospitals. The current study results highlight the burden associated with such injuries among children.     

Emergency physicians and sexual involvement with patients: an Ontario survey

OBJECTIVE: To describe Ontario emergency physicians'' knowledge of colleagues'' sexual involvement with patients and former patients, their own personal experience of such involvement, and their attitudes toward postvisit relationships. DESIGN: Mailed survey. SETTING: Ontario. PARTICIPANTS: Emergency physicians practising in Ontario. RESULTS: Of 974 eligible mailed surveys, 599 (61.5%) were returned. Of these respondents, 52 (8.7%) reported being aware of a colleague in emergency practice who had been sexually involved with a patient or former patient. When describing their own behaviour, 37 respondents (6.2%) reported sexual involvement with a former patient. However, of this group, only 9 (25.0%) had met the patient in an emergency department. Thus, of the total number of respondents, only 1.5% (9/599) reported sexual involvement arising out of an emergency department visit. Most respondents (82.4%) agreed that it is inappropriate behaviour to ask a patient for a date after an emergency assessment and before the patient''s departure, and 66.4% felt that it is inappropriate to contact the patient after discharge. However, only 10.6% believed it to be unacceptable to request a social meeting after encountering a patient previously cared for in the emergency department in a nonprofessional setting. Most respondents (96.5%) did not believe that sexual involvement could ever be therapeutic for the patient. However, only 66% felt that it was always an abuse of power and 62.4% supported zero tolerance of all sexual involvement between physicians and patients. CONCLUSIONS: Vague regulatory guidelines currently in place have failed to dispel confusion regarding what is acceptable social behaviour for physicians providing emergency care. Our results support the need for clarification, and suggest a basis for guidelines that would be acceptable to the emergency medical community: that an emergency visit should not form the basis for the initiation of personal or sexual relationships, yet neither should it preclude their development in nonmedical settings.     

Walk-in clinics: implications for family practice.

To understand better the reasons for the growth in popularity of walk-in clinics in Canada we surveyed 321 patients with a regular physician in Toronto who attended a walk-in clinic in the same city over a 16-day period in February 1988. They were asked their reason for attending the clinic, their perception of the urgency of their problem, their choices as alternatives to walk-in clinics and their satisfaction and concerns with the type of care received at the clinic. The three most common reasons for attending the clinic were convenient location (in 33% of the cases), inability to see their regular physician soon enough (in 16%) and no appointment needed (in 13%). Most (80%) of the patients felt that they needed medical attention within 24 hours after the onset of their problem. Most (83%) of the respondents would have sought medical attention at another walk-in clinic, from their regular physician or at an emergency department had the clinic been closed. Only 36% and 18% of the patients respectively responded that their regular physician worked evenings or weekends. Most of the visits to the clinic were outside regular weekday business hours. The level of satisfaction with the service received at the clinic was high. The extended hours and no-appointment philosophy of walk-in clinics, coupled with family physicians'' reluctance to work evenings and weekends, have made such clinics an attractive option for patients with primary care problems that they believe require prompt attention.     

Emergency health care use and follow-up among sociodemographic groups of children who visit emergency departments for mental health crises

Background:

Previous studies of differences in mental health care associated with children’s sociodemographic status have focused on access to community care. We examined differences associated with visits to the emergency department.

Methods:

We conducted a 6-year population-based cohort analysis using administrative databases of visits (n = 30 656) by children aged less than 18 years (n = 20 956) in Alberta. We measured differences in the number of visits by socioeconomic and First Nations status using directly standardized rates. We examined time to return to the emergency department using a Cox regression model, and we evaluated time to follow-up with a physician by physician type using a competing risks model.

Results:

First Nations children aged 15–17 years had the highest rate of visits for girls (7047 per 100 000 children) and boys (5787 per 100 000 children); children in the same age group from families not receiving government subsidy had the lowest rates (girls: 2155 per 100 000 children; boys: 1323 per 100 000 children). First Nations children (hazard ratio [HR] 1.64; 95% confidence interval [CI] 1.30–2.05), and children from families receiving government subsidies (HR 1.60, 95% CI 1.30–1.98) had a higher risk of return to an emergency department for mental health care than other children. The longest median time to follow-up with a physician was among First Nations children (79 d; 95% CI 60–91 d); this status predicted longer time to a psychiatrist (HR 0.47, 95% CI 0.32–0.70). Age, sex, diagnosis and clinical acuity also explained post-crisis use of health care.

Interpretation:

More visits to the emergency department for mental health crises were made by First Nations children and children from families receiving a subsidy. Sociodemographics predicted risk of return to the emergency department and follow-up care with a physician.Emergency departments are a critical access point for mental health care for children who have been unable to receive care elsewhere or are in crisis.¹ Care provided in an emergency department can stabilize acute problems and facilitate urgent follow-up for symptom management and family support.^1,2Race, ethnic background and socioeconomic status have been linked to a crisis-oriented care patterns among American children.^3,4 Minority children are less likely than white children to have received mental health treatment before an emergency department visit,^3,4 and uninsured children are less likely to receive an urgent mental health evaluation when needed.⁴ Other studies, however, have shown no relation between sociodemographic status and mental health care,^5,6 and it may be that different health system characteristics (e.g., pay-for-service, insurance coverage, publicly funded care) interact with sociodemographic status to influence how mental health resources are used. Canadian studies are largely absent in this discussion, despite a known relation between lower income and poorer mental health status,⁷ nationwide documentation of disparities faced by Aboriginal children,^8–10 and government-commissioned reviews that highlight deficits in universal access to mental health care.¹¹We undertook the current study to examine whether sociodemographic differences exist in the rates of visits to emergency departments for mental health care and in the use of post-crisis health care services for children in Alberta. Knowledge of whether differences exist for children with mental health needs may help identify children who could benefit from earlier intervention to prevent illness destabilization and children who may be disadvantaged in the period after the emergency department visit. We hypothesized that higher rates of emergency department use, lower rates of follow-up physician visits after the initial emergency department visit, and a longer time to physician follow-up would be observed among First Nations children and children from families receiving government social assistance.     

Cost of primary health care services in the emergency department and the family physician's office.

An attempt has been made to determine the true cost of providing primary health care for nontraumatic conditions in the emergency departments of two hospitals in Ontario and in the offices of family physicians. A total of 1117 patients presenting with 1 of 10 common symptom/sign complexes at the emergency departments or the offices of 15 participating family physicians were studies with regard to number of visits made, type of assessment by the physician, investigations undertaken, management, therapy and outcome of the illness. Costs were calculated from the charges that would be made against the provincial health services insurance plan and from the system of hospital financing in effect in the province. The average true cost per illness episode of this type of care was $14.63 in hospital A, $14.20 in hospital B and $15.90 in the family physician''s office.     

Inappropriate hospital use by patients receiving care for medical conditions: targeting utilization review

OBJECTIVE: To describe characteristics associated with inappropriate hospital use by patients in Manitoba in order to help target concurrent utilization review. Utilization review was developed to reduce inappropriate hospital use but can be a very resource-intensive process. DESIGN: Retrospective chart review of a sample of adult patients who received care for medical conditions in a sample of Manitoba hospitals during the fiscal year 1993-94; assessment of patients at admission and for each day of stay with the use of a standardized set of objective, nondiagnosis-based criteria (InterQual). PATIENTS: A total of 3904 patients receiving care at 26 hospitals. OUTCOME MEASURES: Acute (appropriate) and nonacute (inappropriate) admissions and days of stay for adult patients receiving care for medical conditions. RESULTS: After 1 week, 53.2% of patients assessed as needing acute care at admission no longer required acute care. Patients 75 years of age or older consumed more than 50% of the days of stay, and 74.8% of these days of stay were inappropriate. Four diagnostic categories accounted for almost 60% of admissions and days, and more than 50% of those days of stay were inappropriate. Patients admitted through the emergency department were more likely to require acute care (60.9%) than others (41.7%). Patients who were Treaty Indians had a higher proportion of days of stay requiring acute care than others (45.9% v. 32.8%). Patients'' income and day of the week on admission (weekday v. weekend) were not predictive factors of inappropriate use. CONCLUSION: Rather than conducting a utilization review for every patient, hospitals might garner more information by targeting patients receiving care for medical conditions with stays longer than 1 week, patients with nervous system, circulatory, respiratory or digestive diagnoses, elderly patients and patients not admitted through the emergency department.     

Continuity of primary care and emergency department utilization among elderly people

Background

People aged 65 years or more represent a growing group of emergency department users. We investigated whether characteristics of primary care (accessibility and continuity) are associated with emergency department use by elderly people in both urban and rural areas.

Methods

We conducted a cross-sectional study using information for a random sample of 95 173 people aged 65 years or more drawn from provincial administrative databases in Quebec for 2000 and 2001. We obtained data on the patients'' age, sex, comorbidity, rate of emergency department use (number of days on which a visit was made to an amergency department per 1000 days at risk [i.e., alive and not in hospital] during the 2-year study period), use of hospital and ambulatory physician services, residence (urban v. rural), socioeconomic status, access (physician: population ratio, presence of primary physician) and continuity of primary care.

Results

After adjusting for age, sex and comorbidity, we found that an increased rate of emergency department use was associated with lack of a primary physician (adjusted rate ratio [RR] 1.45, 95% confidence interval [CI] 1.41–1.49) and low or medium (v. high) levels of continuity of care with a primary physician (adjusted RR 1.46, 95% CI 1.44–1.48, and 1.27, 95% CI 1.25–1.29, respectively). Other significant predictors of increased use of emergency department services were residence in a rural area, low socioeconomic status and residence in a region with a higher physician:population ratio. Among the patients who had a primary physician, continuity of care had a stronger protective effect in urban than in rural areas.

Interpretation

Having a primary physician and greater continuity of care with this physician are factors associated with decreased emergency department use by elderly people, particularly those living in urban areas.Canada is reforming its health care system, with primary care as a major focus.¹ The population of Canadians aged 65 years or older is expected to double by 2026² and already accounts for the largest share of total health care expenditures.³ Thus, it is important to evaluate primary care services in this population. Because the emergency department often acts as a safety net for patients receiving inadequate primary care,⁴ emergency department use may be an important indicator of the adequacy of primary care services.The main determinants of emergency department use by elderly people are the severity and the nature of the medical needs of the patient (overall and specific comorbidities).⁵ After adjustment for need, increased access to and continuity of primary care may also be associated with lower emergency department use.⁵ However, most studies that investigated the impact of access and continuity of primary care were carried out in the United States, where the health care system is fundamentally different from Canada''s.^5–8 Furthermore, most of these studies used self- reported measures of access and continuity of primary care.^5,7,9We sought to identify determinants of emergency department use in a population-based sample of elderly people in Quebec, with particular focus on measures of access to and continuity of primary care. Access was defined by 2 measures: (a) presence of a primary physician and (b) physician: population ratio. Relational continuity was defined as the proportion of primary care visits with the primary physician.^10,11 Finally, because primary care services in Quebec are organized differently in urban and rural areas,¹² we also compared the association between emergency department use and continuity of care for urban and rural areas.     

Emergency department use following incentives to provide after-hours primary care: a retrospective cohort study

BACKGROUND:Access to primary care outside of regular working hours is limited in many countries. This study investigates the relation between the after-hours premium, an incentive for primary care physicians to provide services after hours, and less-urgent visits to the emergency department in Ontario, Canada.METHODS:We analyzed a retrospective cohort of a random sample of Ontario residents from April 2002 to March 2006, and a subcohort of patients followed from April 2005 to March 2016. We linked patient and primary care physician data with emergency department visit data. We used fixed-effects regression models to analyze the association between the introduction of the after-hours premium, as well as subsequent increases in the value of the premium, and the number of monthly emergency department visits.RESULTS:The sample consisted of 586 534 patients between 2002 and 2006, and 201 594 patients from 2005 to 2016. After controlling for patient and physician characteristics, seasonality and time-invariant patient confounding factors, introduction of the after-hours premium was associated with a reduction of 1.26 less-urgent visits to the emergency department per 1000 patients per month (95% confidence interval −1.48 to −1.04). Most of this reduction was observed in after-hours visits. Sensitivity analysis showed that the monthly reduction in less-urgent visits to the emergency department was in the range of −1.24 to −1.16 per 1000 patients. Subsequent increases in the after-hours premium were associated with a small reduction in less-urgent visits to the emergency department.INTERPRETATION:Ontario’s experience suggests that incentivizing physicians to improve access to after-hours primary care reduces some less-urgent visits to the emergency department. Other jurisdictions may consider incentives to limit less-urgent visits to the emergency department.

One prominent health policy issue confronting many countries is overcrowding of the emergency department.¹ Not only does overcrowding result in longer wait times in the emergency department, but it may be associated with patient dissatisfaction and higher risk of death,^2–4 as well as contribute to higher health system costs.^5–7 Use of the emergency department by patients with conditions treatable in primary care may be a factor that contributes to emergency department overcrowding,^4,8,9 and improved after-hours access to primary care is a potential solution.¹⁰Following Canada’s initiatives on primary care reform in the early 2000s, the Ontario government introduced several patient enrolment models (PEMs) for primary care delivery.¹¹ These models were characterized by mandatory patient enrolment, group-based practice and blended remuneration, including retrospective and prospective payments and pay-for-performance incentives. In July 2003, the Ontario government introduced the after-hours premium, an incentive for physicians practising in PEMs to claim an additional 10% on specific services provided to enrolled patients after regular business hours (5 pm to 8 am on weekdays, and any time on weekends and holidays). The after-hours premium increased to 15% in April 2005, 20% in April 2006 and to 30% in September 2011. One study examined the effect of enrolment in a PEM on overall emergency department visits, thereby masking any differential effects on urgent and less-urgent visits.¹² Using physician-level data, a recent study examined the impact of the increase in the after-hours premium from 10% to 20%.¹³ We build on this literature and examine whether the introduction of Ontario’s after-hours premium, and subsequent increases in the premium, were associated with changes in emergency department visits, stratified by visit urgency. In particular, we examine whether the premium was associated with reductions in less-urgent visits to the emergency department.     

Use of a Hospital Emergency Service by Children and Adolescents for Primary Care

This study was planned to determine the extent to which the emergency service of a large general hospital in Vancouver was providing a primary medical care function for children and adolescents. The data were collected during 14-day study periods in each season of the year. Medical data and physician urgency rating were obtained on all patients. Demographic and socioeconomic data and data pertaining to patterns of medical care were obtained by interview of a one-third sample.The study identified a group of patients receiving primary medical care for non-urgent and non-traumatic conditions. This group resided close to the hospital and had lower socioeconomic indices than the remainder of the patients.The trend to utilize the emergency department for reasons other than the accident and emergency function was confirmed. These findings will be incorporated in the planning of the New Children''s Hospital in Vancouver with the provision of separate facilities for the care of non-urgent attenders.