Table 3.

Multivariable Mixed Model for All-Cause Mortality and ICU Admission Considering Postal Code Areas According to Country Reference

	Mortality (OR, unadjusted)	Mortality (adjusted $)	ICU admission (OR, unadjusted)	ICU Admission (OR, Adjusted$)
Age (years)	3.75 (3.46–4.07)***	4.10 (3.74–4.49)***	0.76 (0.71–0.81)***	0.77 (0.71–0.83)***
Female gender	0.74 (0.66–0.82)***	0.57 (0.51–0.64)***	0.45 (0.38–0.52)***	0.44 (0.37–0.51)***
Immigrant	0.32 (0.24–0.41)***	1.26 (0.98–1.62)	1.21 (0.99–1.48)	1.28 (1.02–1.61)*
Income	0.88 (0.83–0.93)***	0.89 (0.82–0.98)*	1.08 (1.01–1.17)*	1.08 (0.96–1.21)
Postal code area median population density	0.97 (0.92–1.02)	1.09 (0.98–1.22)	0.88 (0.82–0.94)***	0.94 (0.82–1.07)
Hospital Experience Index, median	0.77 (0.72–0.81)***	0.59 (0.53–0.65)***	0.71 (0.65–0.77)***	1.09 (0.93–1.26)
Emergency Department Saturation Index, median	0.89 (0.84–0.94)***	0.93 (0.80–1.08)	0.59 (0.52–0.66)***	0.45 (0.36–0.57)***

^$Multivariable mixed model for mortality (center-intraclass correlation = 0.05, median OR 1.49)

^§Multivariable mixed model for ICU admission (center-intraclass correlation = 0.08, median OR 1.65)

Italicized values indicate statistical significance (*p < 0.05, **p < 0.01, ***p < 0.001)