Table 5.

Model fit (R‐squared) of Linear Regression on total Medicare expenditures

	Condition count	Cumulative duration
R‐squared of model excluding count and duration (adjusts only for age, sex, race/ethnicity, Medicaid status)	0.0555
R‐squared in models with continuous count or duration	0.4609	0.2715
R‐squared in models with quartiles of count or duration	0.4083	0.2656

Medicare expenditures include total Medicare payments for all Medicare covered services in Parts A and B.

Regression adjusted for age, sex, race/ethnicity, and Medicaid status.