Table 2. Association Between Race and Use of Outpatient Rehabilitation Services Over the 6 Months After Hospitalization for Traumatic Brain Injury Among Black and White Medicare Beneficiaries From 2010 Through 2017.

	Rate ratio (95% CI)
Unadjusted
Black beneficiaries	0.47 (0.31-0.72)
White beneficiaries	1 [Reference]
Adjusted, acuity variablesa
Black beneficiaries	0.47 (0.31-0.72)
White beneficiaries	1 [Reference]
Adjusted, acuity and demographic variablesb
Black beneficiaries	0.47 (0.31-0.71)
White beneficiaries	1 [Reference]
Adjusted, acuity, demographic, and comorbidity variablesc
Black beneficiaries	0.50 (0.33-0.77)
White beneficiaries	1 [Reference]
Adjusted, acuity, demographic, comorbidity, and socioeconomic variablesd
Black beneficiaries	0.60 (0.38-0.93)
White beneficiaries	1 [Reference]

^a Length of hospital stay, Abbreviated Injury Scale score for head, intensive care unit stay, and discharge location (home vs inpatient rehabilitation).

^b Age and sex.

^c Acute myocardial infarction, Alzheimer disease and related dementias, anemia, asthma, atrial fibrillation, cataract, cancer, chronic kidney disease, chronic obstructive pulmonary disease, depression, diabetes, glaucoma, heart failure, hip fracture, hyperlipidemia, hypertension, hypothyroid, ischemic heart disease, osteoporosis, rheumatoid and osteoarthritis, and stroke.

^d Dual Medicaid and Medicare eligibility and Original Reason for Medicare Entitlement Code (age vs other).