Intensive In-Hospital Rehabilitation After Hip Fracture Surgery and Activities of Daily Living in Patients With Dementia: Retrospective Analysis of a Nationwide Inpatient Database

ObjectivesTo examine the effects of earlier, more frequent, and larger daily amounts of postoperative rehabilitation on activities of daily living (ADL) after hip fracture surgery in patients with dementia.DesignRetrospective cohort study.SettingA total of 1053 acute-care hospitals.ParticipantsPatients aged ≥65 years with dementia at admission underwent hip fracture surgery and received postoperative rehabilitation from April 1, 2014 to March 31, 2016 (N=43,206).InterventionsThree rehabilitation variables as key independent variables: (1) the interval from surgery to starting rehabilitation (days); (2) the frequency of postoperative rehabilitation (days per week); and (3) the average daily units of postoperative rehabilitation (minutes per daily rehabilitation).Main Outcome MeasureADLs based on the Barthel Index (BI) at discharge from acute-care hospitals.ResultsIn the multivariable linear regression analysis, delayed rehabilitation was significantly associated with a lower BI at discharge (for each day of the interval increase, BI at discharge was 0.38 lower; 95% confidence interval [CI], 0.21-0.54), and a significant increase in the BI at discharge was observed in patients who underwent more frequent rehabilitation (BI [95% CI] was 2.62 [0.99-4.25], 5.83 [4.28-7.38], 7.56 [5.95-9.16], and 9.16 [7.34-10.97] higher for frequencies of 3.1-4.0, 4.1-5.0, 5.1-6.0, and >6.0 days per week, respectively) and larger daily amounts of rehabilitation (4.37 [3.69-5.06] and 6.60 [5.63-7.57] higher for 40-59 and ≥60 minutes per day, respectively).ConclusionsThese results suggest that earlier, more frequent, and larger daily amounts of postoperative rehabilitation in acute-care hospitals are independently associated with better recovery in ADL at discharge from acute-care hospitals after hip fracture surgery in patients with dementia.