Objectives
To determine the extent to which demographic and geographic disparities exist in the use of post-acute rehabilitation care (PARC) for joint replacement.
Methods
Cross-sectional analysis of two years (2005–2006) of population-based hospital discharge data from 392 hospitals in four states (AZ, FL, NJ, WI). 164,875 individuals 45 years and older admitted to the hospital for a hip or knee joint replacement and who survived their inpatient stay were identified. Three dichotomous dependent variables were examined: 1) discharge to home vs. institution (i.e., skilled nursing facility (SNF) or inpatient rehabilitation facility (IRF)); 2) discharge to home with vs. without home health (HH); and 3) discharge to a SNF vs. IRF. Multilevel logistic regression analyses were conducted to identify demographic and geographic disparities in PARC use, controlling for illness severity/comorbidities, hospital characteristics, and PARC supply. Interactions among race, socioeconomic, and geographic variables were explored.
Results
Considering PARC as a continuum from more to less intensive care in regard to hours of rehabilitation/day (e.g., IRF→SNF→HH→no HH), the uninsured received less intensive care in all three models. Individuals on Medicaid and those of lower SES received less intensive care in the HH/no HH and SNF/IRF models. Individuals living in rural areas received less intensive care in the institution/home and HH/no HH models. The effect of race was modified by insurance and by state. In most instances minorities received less intensive care. PARC use varied by hospital.
Conclusions
Efforts to further understand the reasons behind these disparities and their effect on outcomes are needed.