High-Intensity Home-Based Rehabilitation in a Medicare Accountable Care Organization

Authors:
  • MRMichael Rothberg
    Michael Rothberg
  • JDJarrod Dalton
    Jarrod Dalton
  • WZWilliam Zafirau
    William Zafirau
  • DCDon Carroll
    Don Carroll
  • SPSteven Pamer
    Steven Pamer
  • LOLaura Olitsky
    Laura Olitsky
  • JMJessica Marzulli
    Jessica Marzulli
  • KGKaren Green
    Karen Green
  • MSMary Stilphen
    Mary Stilphen
  • JHJessica Hohman
    Jessica Hohman
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Abstract
Objectives: Patients are often discharged to a skilled nursing facility (SNF) for postacute rehabilitation. Functional outcomes achieved in SNFs are variable, and costs are high. Especially for accountable care organizations (ACOs), home-based postacute rehabilitation offers a high-value option if outcomes are not compromised. The objective was to compare outcomes for episodes in a novel high-intensity home-based rehabilitation (HIHR) model vs an SNF. Study Design: Retrospective cohort study. Methods: Medicare patients from a large integrated multihospital health system who had low to moderate medical complexity and mild to moderate mobility deficits at hospital discharge were included. The primary exposure was discharge to HIHR (intervention) or an SNF (control) after hospitalization. The primary outcome was Activity Measure for Post-Acute Care (AM-PAC) mobility score. Secondary outcomes were Medicare costs within 30 and 90 days post hospitalization, 30-day readmission rate, and index hospital length of stay (LOS). Inverse probability of treatment-weighted regression was used for comparison between cohorts. Results: There were 171 patients discharged to HIHR and 841 to SNFs. The adjusted AM-PAC mobility T-score was 8.2 (95% CI, 6.3-10.1) points higher after HIHR vs SNF. Adjusted Medicare costs were lower for the HIHR cohort (within 90 days, –$17,123; 95% CI, –$20,757 to –$13,490). Hospital LOS and odds for readmission did not differ between cohorts. Conclusions: The HIHR cohort demonstrated better functional outcomes and lower posthospital costs. HIHR may be a high-value option for patients attributed to a Medicare ACO who have moderate medical complexity and moderate functional deficits at the time of hospital discharge.