Table 4.

Adjusted Change (95% CI) per Additional Calendar Year in the Length (in Days) of ICU and Critical Illness Hospital Stay according to Ethnicity

	ICU Length of Stay		Hospital Length of Stay
	Minority-Serving Hospital	Non–Minority-Serving Hospital	Minority-Serving Hospital	Non–Minority-Serving Hospital
African American
Adjusted change (95% CI), d	−0.01 (−0.02 to 0.01)	−0.09 (−0.10 to −0.08)	−0.03 (−0.07 to 0.01)	−0.21 (−0.23 to −0.20)
P value	0.46	<0.001	0.19	<0.001
Hispanic
Adjusted change (95% CI), d	−0.09 (−0.10 to −0.07)	−0.06 (−0.07 to −0.04)	−0.20 (−0.23 to −0.16)	−0.12 (−0.15 to −0.09)
P value	<0.001	<0.001	<0.001	<0.001
White
Adjusted change (95% CI), d	−0.04 (−0.05 to −0.02)	−0.08 (−0.08 to −0.07)	−0.08 (−0.11 to −0.06)	−0.16 (−0.17 to −0.16)
P value	<0.001	<0.001	<0.001	<0.001

Definition of abbreviation: CI = confidence interval.

Adjusted change in length of stay per additional calendar year according to ethnicity. The change in length of stay was adjusted for age, sex, ethnicity, unit type, admission diagnosis, Charlson comorbidity score, illness severity, admission year (defined continuously), and hospital mortality. Multiplicative interaction P values between indicator for minority-serving hospitals and admission year (defined continuously) were less than 0.001 within each ethnic stratum.