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The investigators will link MedSafer (a Canadian-made electronic tool) with a large multi-national electronic medical record (EMR), MED e-care, through an existing application programming interface (API) that provides clinicians with electronic, patient-specific deprescribing reports. They will implement a highly scalable deprescribing intervention in a staged and controlled fashion across five Canadian Aged Care Facilities. The investigators aim to test the feasibility of the API for the purposes of generating real time automated deprescribing reports, displayed to the user in the EMR.

MedSafer is a Canadian-made electronic tool that automates deprescribing and generates individualized, prioritized deprescribing opportunities for older adults based on existing evidence from algorithms such as the Beer's criteria and STOPP/START in order to stop potentially inappropriate medications. Its clinical content has been in place for over a year in a Canadian Institutes for Health Research funded study and has been tested on over 5000 hospitalized patients. Software output has been analyzed and validated by Canadian experts in internal medicine, geriatrics, palliative care, nursing, and pharmacy.

In the previous study funded by the Canadian Institutes for Health Research (expected total recruitment: 6000), while deprescribing reports were generated automatically, data still had to be entered manually, by trained research assistants. For this study, the next stage of development involved creating an API that could accept medical conditions in the format of ICD10 codes and medications as DINs.

"MedSafer e-Care" addresses the needs of patients and caretakers by facilitating safe deprescribing. Deprescribing is time consuming, complex, and not all caretakers (clinicians) are trained with the expert knowledge required to cross reference multiple medical conditions with often 10 or more medications. "MED e-care" is an EMR (electronic medical record) that contains patient medical conditions and medications stored as international disease classification codes (ICD10) and drug identification numbers (DIN). The MedSafer team has designed an API that cross-references ICD10 codes and DINs against existing evidence-based algorithms for safe deprescribing. The API has been tested on a variety of medical conditions and medications contained within the MedSafer rule set. This process can overcome barriers to stopping medications including caretaker time constraints and knowledge gaps.

Data packets are processed by the MedSafer API and deprescribing reports are returned to MED e-care and displayed to the user on the EMR interface. Reports will be available to caretakers (nurses, physicians and pharmacists) who can choose to stop or taper medications within the EMR. Opportunities are prioritized based on potential for harm and ease of discontinuation, and factor in a measure of patient frailty and life expectancy. When necessary, instructions for tapering medications are provided. Links to patient educational brochures are included and can be printed for the patient and family detailing harmful medications and deprescribing rationale. MED e-care has already entered negotiations with the nursing home group OMNI Health Care to recruit at least five and up to 18 of the 18 care sites from within the OMNI group of homes across Ontario.

The estimated duration of the study is 12 months. Deployment will approximate a Stepped Wedge Cluster Randomized Trial Design (calculations performed with steppedwedge function in Stata v. 15). To accomplish this, at least 10 unique patients would need to be enrolles per ACF every 2 months following a 3-month baseline period (minimum total 300 patients).

The 5 OMNI ACFs will be grouped in 3 clusters. During the control phase, the MedSafer API will not be accessible to the caretakers at the ACF. This serves to obtain baseline deprescribing levels for each ACF. When the first cluster completes its baseline phase, the MedSafer API feature will become accessible in MED e-care for the physicians, pharmacists and nurses. Staff at the ACFs will receive a communiqué before entering the intervention phase as well as a brief training on how to access this feature in the EMR. Following a 3 month intervention period, the 2nd cluster will switch from its baseline phase to intervention. The last cluster will enter the intervention phase 3 months after that. Once in the intervention phase, users will receive quarterly deprescribing reports for their patients. MED e-care will selectively allow access to the MedSafer feature for each site when it is their turn to enter the intervention phase.

Cluster 1: 3 months control + 9 months intervention

Cluster 2: 6 months control + 6 months intervention

Cluster 3: 9 months control + 3 months intervention

During the control phase, residents at the 5 nursing homes or their proxy will be contacted by a trained research assistant who will ask them to participate in the study. Their participation will consist of a survey regarding their attitude towards deprescribing.

During the intervention phase, staff at the nursing homes (nurse, pharmacist, physician) will be asked to distribute educational brochures regarding medications to patients/proxies, as applicable to the medications the patient is taking.

During the intervention phase, this feature will provide users with individualized and prioritized deprescribing opportunities: a) identifying the medication, b) explaining why that medication is potentially inappropriate and c) providing instructions on how to safely stop/taper the medication. The user will review these opportunities and appropriate candidate medications for deprescribing can then be tapered or stopped directly in the EMR.

Structured feedback about MedSafer deprescribing opportunities is important and imperative to optimize success and sustainability of any deprescribing intervention. Working with the user, through rapid cycle interventions, the investigators will curate an output that minimizes alert fatigue and is acceptable to stakeholders (caretakers/clinicians). Users of the MedSafer feature will include physicians, pharmacists and nurses, including nurse practitioners, at the 5 OMNI long-term care facilities.

Inclusion Criteria:

• All residents of the participating Ontario long term care facilities (OMNI) who are 65 years of age or older and are taking a potentially inappropriate medication (as identified by MedSafer) are eligible for the deprescribing component of this study.

Exclusion Criteria:

• If a patient is unable to complete the survey due to a language barrier or cognitive impairment, the research assistant will seek consent from an appropriate proxy. In the event where both the patient and proxy are unable to complete the survey or there was no proxy identified or proxy could not be reached, the patient will be excluded from the survey component of the study. The health care professionals will still have access to their MedSafer file for the purposes of patient care.

Non-pharma academic researchers may contact the principal investigator by email one year following the primary publication for access to data which will be shared via password-protected excel document.

Made available for 1 year following the publication of the primary manuscript from the trial

Contact study primary investigator at emily.mcdonald@mcgill.ca

The investigator will receive anonymous data and when performing the analysis will not know if the participant received the intervention or not. The same is true for the outcome assessor (blinded to study intervention). All patient and time identifiers stripped from the outcome adjudication.