The mobile seniors' clinic - an innovative transition of care for frail older adults.

Background: This study aims to evaluate the impact of Quebec's first hospital-at-home-inspired mobile Seniors' Clinic, the "Clinique des Ainés (CDA)", on frail older adults' returns to the Emergency Department (ED), mortality, and hospital Length Of Stay (LOS) and rehospitalizations.

Methods: Design: Quasi-experimental pre-post implementation cohort study.

Population: Patients aged ≥ 75 years admitted to the short-term geriatric unit after an ED consultation (control) or included by the CDA (intervention).

Outcomes: return to ED (RtoED), mortality, ED & hospital LOS, and rehospitalizations.

Statistical analyses: Multivariable regression modelling.

Results: Overall, 891 patients were included. At the intervention site (CDA) (n = 437), RtoED were similar at 30 (17.5% & 19.5%, p = 0.58), 90 (34.4% & 37.3%, p = 0.46) and 180 days (47.2% & 54.0%, p = 0.07) in the pre and post-implementation phases. No mortality differences were found. The hospitalization LOS was significantly shorter (28.26 and 14.22 days, p < 0.01). At 90 days, rehospitalization LOS was decreased by 8.51 days (p = 0.02) and by 6.48 days at 180 days (p = 0.03). Compared to the control site (n = 454) in the post-implementation phase, RtoED was 54% at the intervention site compared to 44.1% (p = 0.02) at 180 days. The CDA had a lower adjusted probability of mortality at 90 days compared to the control site (4.8% VS 11.7%, p = 0.03). No rehospitalization LOS differences were noted.

Conclusions: The Clinique des Ainés showed effectiveness in caring for frail older patients in their homes by decreasing their hospital LOS by half and 90 days mortality risk. It was a safe care trajectory without a clinically significant increase in ED returns or mortality.