- Design
- Retrospective cohort using survey data linked to Medicare claims
- Population
- 4,527 discharges home after short skilled nursing home stays, US, 2000-2019
- Primary outcome
- 30-day hospital readmission
- Effect
- 15.8% readmitted; dementia not associated; prior hospital use and comorbidity associated
Using Health and Retirement Study data linked to Medicare claims from 2000 to 2019 (Journal of the American Geriatrics Society, 10 October 2026), investigators studied 30-day readmission after older adults were discharged home from a short rehabilitative skilled nursing home stay.
Of 4,527 discharges, 714 (15.8%) were followed by readmission. A claims-based dementia diagnosis, present in 42.2%, was not associated with readmission. Hospital or emergency visits in the year before the nursing-home stay and higher Charlson comorbidity scores were associated with higher odds; female sex, being married and living in the Midwest or West with lower odds.
Dementia may already prompt more careful discharge planning in these settings. The patients who slip through are those with heavy prior hospital use and many comorbidities, and those without a spouse at home.
- Flag patients with frequent hospital or emergency visits in the past year as high readmission risk at nursing-home discharge.
- Use comorbidity burden, not dementia alone, to target transitional support.
- Ask who will be at home; living without a spouse or partner was linked to readmission.
- Arrange early follow-up and medication review for high-risk discharges.
- Keep dementia-specific discharge support in place; the finding may reflect it working.
Why it matters
It challenges the assumption that dementia is the main driver of readmission after nursing-home rehabilitation.
Don't overread it
Claims-based dementia diagnosis misses many cases, so the null finding for dementia may be partly a measurement problem.
The statistics, in plain English
Observational associations: these factors identify who is at risk, not what will reduce risk if changed.
Read the rest in the app
You have read your two free briefings this month. The app carries all 27 specialties, every morning, free — and this finding is waiting in it.
Scan to keep reading on your phone. No account needed to start.
Tomorrow morning, before your first patient
One edition a day for geriatrics, written by the desk, every claim tied to its paper. Six minutes.
Get the app — free