Socioeconomic status and healthcare access are associated with healthcare utilization after knee arthroplasty: A U.S. national cohort study

To examine if health insurance payer type and income are associated with higher healthcare utilization after primary total knee arthroplasty (TKA). We used multivariable-adjusted logistic regression to examine the association of the insurance payer type (Medicare, Medicaid, private insurance, self-pay or other), and annual household income (based on zip code; quartiles) with healthcare utilization for index TKA hospitalization, using the...