The Right Care, for the Right Patient, at the Right Time, by the Right Provider: A Value-based Comparison of the Management of Ambulatory Patients With Acute Health Concerns in walk-in Clinics, Primary Care Physician Practices and Emergency Departments

INTRODUCTION Whereas low-acuity ambulatory patients have been cited as a source of emergency department (ED) overuse or misuse, it is argued that patient evaluation in the ED may end up being more cost-effective. The COVID-19 pandemic has complicated the debate by shifting primary care practices (PCP) and walk-in clinics (WIC) towards telemedicine, a consultation modality presumed to be more efficient under the circumstances. OBJECTIVES To compare, from patient and healthcare system perspectives, the value of the care received in person or by telemedicine in EDs, WICs and PCPs by ambulatory patients presenting with one the following complaints: 1) Acute diarrheas; 2) Sore throat; 3) Nasal congestion; 4) Increased or purulent nasal discharge; 5) Earache or ear discharge; 6) Shortness of breath; 7) Cough; 8) Increased or purulent sputum; 9) Muscle aches; 10) Anosmia; 11) Dysgeusia; 12) Burning urine; 13) Urinary frequency and urgency; 14) Dysuria; 15) Limb traumatic injury; 16) Cervical, thoracic or lumbar back pain; and 17) Fever METHODS The investigators shall perform a multicenter prospective cohort study in Québec and Ontario. In phase 1, a time-driven activity-based costing method will be applied at each of 14 study sites. This method uses time as a cost driver to allocate direct costs (e.g. medication), consumable expenditures (e.g. needles, office supplies), overhead (e.g. building maintenance) and physician charges to patient care. The cost of a care episode thus will be proportional to the time spent receiving the care. At the end of this phase, a list of care process costs (e.g. triage, virtual medical assessment) will be generated and used to calculate the cost of each consultation during phase 2, in which a prospective cohort of patients will be monitored in order to compare the care received in EDs, WICs and PCPs. Research assistants will recruit eligible participants during the initial in-person or virtual visit. They will complete the collection using