Effects of a new early municipality-based versus a geriatric team-based transitional care intervention on readmission and mortality among frail older patients - a randomised controlled trial.

Purpose Previous studies reported reduced risk of readmission, mortality and shorter length of hospital stay (LOS) among geriatric patients receiving an early (<24h), hospital-based geriatric team intervention after discharge. The objective of this study was to compare a novel, early municipality-based, nurse-led and general practitioner (GP)-supported transitional care intervention (TCI) to an established hospital-based TCI among frail, older, geriatric patients. Material and methods A randomised controlled trial was conducted within a single geriatric department and the adjacent municipality. Inclusion criteria: acutely admitted, frail patients 75+ years old. Eligible patients were randomly allocated (1:1) to the two TCIs. Primary outcome was 30-day unplanned readmission. Secondary outcomes were 90-day all-cause mortality and LOS. Stratified analysis according to type of dwelling was made. Odds ratios (OR) with 95% confidence intervals (CI), and number needed to treat (NNT) were reported. Results 3,103 patients (median age (IQR): 85 (80-90); 57% female) were included. Readmission rates were 22% in the municipality-based intervention (n=332/1,545), and 18% in the hospital-based intervention (n=276/1,558); OR was 1.27, 95% CI (1.06-1.52), p=0.008 and NNT=27. OR for cohabiting patients was 1.47, 95% CI (1.02-2.08); p=0.035. No significant difference was observed in mortality (22% vs. 21%; OR=1.05, 95% CI (0.89-1.25), p=0.577) or LOS (median (IQR): 6 (2-8) vs. 6 (2-8) days, p=0.1787). Conclusions The new municipality-based, nurse-led and GP-supported intervention was inferior to the hospital-based geriatric team intervention in preventing 30-day readmission among frail, geriatric patients. There was no significant difference between the two interventions in regard to 90-day mortality or LOS.