Impact of an Allied Health Team in the Emergency Department on Older Adults' Care

Background Internationally, emergency departments (EDs) face significant challenges in delivering high quality and timely patient care on an ever-present background of increasing patient numbers and limited hospital resources. Research demonstrates that ED crowding contributes to a reduction in the quality of patient care, delays in commencement of treatment and that adherence with recognised clinical guidelines worsens [1].

Identifying quality improvement strategies to improve patient flow in the ED can enhance quality of care. Evidence from international studies demonstrates that Health and Social Care Professionals (HSCPs) such as physiotherapists, occupational therapists and medical social workers can play a role in the ED in reducing length of patient stay, avoiding unnecessary hospital admissions and improving patient experience [2,3]. However, the quality of the evidence is mixed, primarily due to weaknesses in designing the studies.

Aim The overall aim of the study is to examine the impact of a dedicated team of Health and Social Care Professionals (HSCPs) in the Emergency Department (ED) on the quality, safety and cost-effectiveness of care of older adults in the ED.

The objectives of the study are as follows:

1. To implement a HSCP team including a whole time equivalent senior physiotherapist (PT), senior occupational therapist (OT) and senior medical social worker (MSW) in the Emergency Department at University Hospital Limerick (UHL) for a period of six months.
2. To examine if early assessment and intervention by the HSCP team improves the quality, safety and cost-effectiveness of care among older adults who present to the ED, as compared to usual care.
3. To conduct a process evaluation of the HSCP intervention through focus group interviews with the HSCP team and representation from the wider ED staff regarding the implementation, delivery and impact of the intervention.

Methods

Study design The study represents a pilot randomised controlled trial which will compare assessment and/or interventions carried by a HSCP team, comprised of a physiotherapist, an occupational therapist and a medical social worker, in the ED with usual ED care. The Consolidated Standards of Reporting Trials (CONSORT) reporting guidelines will be followed to ensure the standardised conduct and reporting of the research.

Population All adults ≥65 years who present to the Emergency Department at University Hospital Limerick (UHL) between December 2018 and March 2019 (inclusive) will be considered eligible for inclusion to the study provided that they meet the inclusion criteria (see below). However, similar to other studies, the HSCP team is operational between the hours of 8am and 5pm Monday-Friday. Therefore, individuals who present outside of these hours may not be offered/included in the study.

Consent Potential participants will initially be informed of the study by the triage nurse or the treating physician. If participants indicate a willingness to hear more about the study, the dedicated research nurse on the project will be informed. The research nurse will subsequently meet with the potential participant and describe the study in detail and provide potential participants with an information leaflet. Participants will be given the opportunity to ask further questions about the project should they wish to do so. Written informed consent will be obtained by the research nurse if/when the participant indicates their willingness to formally participate in the study. Participants will have the duration of their index admission to consider participation in the study. Consent and mechanisms relating to data controlling and processing will be compliant with the European Union (EU) General Data Protection Regulation (GDPR) 2016/679 and also in compliance with the Data Protection Act 2018 [(Section 36(2)) (Health Research) Regulations 2018].

Intervention The intervention will comprise initially of a detailed assessment by one or more members of the dedicated HSCP team (physiotherapy, occupational therapy and medical social work). The assessment will include but not be limited to an assessment of mobility and stairs, transfer, personal care, activities of daily living (ADLs), social supports, cognition, lying \& standing blood pressures. Members of the HSCP team will be guided by their clinical expertise and codes of professional practice. Similarly, interventions prescribed by the HSCP team will be based on subjective and objective assessment of patients and will include mobility aids, exercise programmes, ADL equipment and onward referral as appropriate. All assessments and interventions will be included in the medical chart of individual participants.

Comparison The comparison group will receive routine care for the duration of their stay in the ED. Currently there is no dedicated team of HSCPs in the Emergency Department at UHL. Ad-hoc services are provided by allied health professionals if they are requested by a member of the team in the ED. This process will continue for the duration of the trial.

Outcomes and analysis The primary outcome of the study is duration of patient ED stay (mean hours from time of arrival to discharge or admission). Secondary outcomes will include the incidence of inpatient admission from the ED (defined as the proportion of patients who are admitted to hospital after their index visits), the duration of hospital admission after the ED index visit, as well as the number of ED re-attendances, nursing home admissions, unplanned hospital visits (and duration of stay) and mortality within 30 days, four months and six months of the initial index visit. Healthcare utilisation (visits to GP, public health nurse, home help, private consultations, outpatient department visits, or allied health services) will also be captured at 30 days, four months and six months. Assessment of patient oriented outcomes include the Barthel Index for Activities of Daily Living (17) as a global measure of function and the EuroQoL's 5-Dimension 5-Level (EQ-5D-5L) to measure health-related quality of life (18), which will be conducted at baseline as well as at follow-up (30 days and six months, with quality of life also assessed at four months).

In addition, patient satisfaction with their index visit will be explored using the 18-item Patient Satisfaction Questionnaire (PSQ-18) (19) at the time of the visit.

An economic analysis will estimate the incremental cost effectiveness of the HSCP team from the perspective of the Irish public health service, as compared to usual care. We will estimate health care costs from reference costs from national data sources. Participants' responses to the EQ-5D-5L questionnaire will be used to estimate health states utilities using the Irish value set (20) and Quality-Adjusted Life Years (QALYs) for each treatment group will be estimated across all timepoints.

Lastly, a process evaluation will be conducted through a mixed quantitative-qualitative design to describe the implementation of the intervention as well as investigate the mechanisms and contextual influences of the implementation as perceived by the HSCP team and representation from the wider ED staff. A detailed study protocol for the process evaluation is in preparation.

Each participant in the study will be assigned a numerical code in order to link data collected at baseline to the data collected at follow-up at 30 days, four and six months. Aggregate data will be anonymised. Appropriate descriptive statistics will be used to describe the baseline characteristics of study participants. These will include proportions, percentages, ranges, means and standard deviations and medians and interquartile ranges (where data are not normally distributed). We will analyse differences across the two groups for all continuous outcomes (ED length of stay, etc.) by using independent samples t-tests with 95% CI. The non-parametric equivalent will be used for skewed data. Incidence of ED return, unplanned hospital admission, nursing home admission and healthcare utilization will be explored using crude and adjusted risk ratios with associated 95% Confidence Interval (CI).

Considering the cost-effectiveness analysis, as per the Irish Health Information and Quality Authority (HIQA) guidance (21), the primary endpoint of the cost-effectiveness analysis will be costs, QALYs and the Incremental Cost Effectiveness Ratio (ICER). Analysis of uncertainty of the joint distribution of cost and QALYs between the two arms of the study will be presented on a cost-effectiveness acceptability curve to indicate the probability that the HSCP intervention will be cost effective, based on available trial data and across various willingness to pay thresholds.