Effects of Early Postdischarge Rehabilitation Services on Care Needs-Level Deterioration in Older Adults With Functional Impairment: A Propensity Score-Matched Study.

OBJECTIVE: To examine the effects of early postdischarge rehabilitation on care needs-level deterioration in older Japanese patients. DESIGN: Propensity score-matched retrospective cohort study. SETTING: A secondary data analysis was conducted using medical and long-term care insurance claims data from a suburban city in Japan. PARTICIPANTS: We analyzed patients (N=2746) aged 65 years or older who were discharged from hospital to home between April 2012 and March 2014 and had care needs certification indicating functional impairment. INTERVENTIONS: The provision of early rehabilitation services by rehabilitation therapists within 1 month of discharge. Propensity score matching was used to control for differences in characteristics between patients with and without early rehabilitation services. MAIN OUTCOME MEASURES: Any deterioration in care needs level during the 12-month period after discharge. Cox proportional hazards analyses were conducted to identify the association between the exposure and outcome variables after matching. RESULTS: Among 2746 patients, 573 (20.9%) used early rehabilitation services. Care needs-level deterioration occurred in 508 patients (incidence: 18.3 per 1000 person-months), of which 76 used early rehabilitation services (12.3 per 1000 person-months) and 432 did not use early rehabilitation services (20.0 per 1000 person-months). One-to-one propensity score matching produced 566 matched pairs that adjusted for the differences in all covariables. In these matched pairs, the hazard of care needs-level deterioration was significantly lower among patients who used early rehabilitation services (hazard ratio=0.712, 95% CI, 0.529-0.958). A Kaplan-Meier survival analysis showed similar results (log-rank: P=.023). CONCLUSIONS: Early rehabilitation services provided by rehabilitation therapists after hospital discharge appeared effective in preventing care needs-level deterioration, and involving rehabilitation therapists in transitional care may aid the optimization of health care for older Japanese adults with functional impairment.