Table 3.

Social gradients of COVID-19-related hospitalisation, intensive care and death by education, income and country of birth; estimates are Relative Index of Inequality (RII) with 95% CIs based on Cox regression models*

	Model 0	Model 1	Model 2	Model 3	Model 4
Hospitalisations
Education	4.29 (4.04 to 4.56)	3.33 (3.12 to 3.54)	1.47 (1.38 to 1.56)	1.45 (1.36 to 1.54)	1.59 (1.50 to 1.70)
Income	2.80 (2.65 to 2.96)	1.73 (1.63 to 1.84)	1.59 (1.49 to 1.70)	1.52 (1.43 to 1.62)	1.81 (1.69 to 1.93)
Country of birth	2.45 (2.30 to 2.61)	1.83 (1.71 to 1.95)	3.13 (2.92 to 3.35)	3.19 (2.98 to 3.41)	2.22 (2.05 to 2.39)
Intensive care admissions
Education	2.94 (2.55 to 3.40)	2.72 (2.34 to 3.18)	1.62 (1.39 to 1.89)	1.58 (1.35 to 1.84)	1.55 (1.33 to 1.81)
Income	1.58 (1.38 to 1.80)	0.93 (0.80 to 1.09)	1.64 (1.41 to 1.90)	1.52 (1.31 to 1.77)	1.69 (1.44 to 1.99)
Country of birth	2.99 (2.57 to 3.47)	2.69 (2.31 to 3.14)	2.18 (1.85 to 2.57)	2.23 (1.89 to 2.63)	2.04 (1.70 to 2.46)
Deaths
Education	12.09 (10.84 to 13.49)	6.64 (5.92 to 7.44)	1.09 (0.98 to 1.22)	1.09 (0.98 to 1.22)	1.13 (1.01 to 1.26)
Income	10.84 (9.76 to 12.05)	8.14 (7.27 to 9.12)	1.94 (1.72 to 2.19)	1.90 (1.68 to 2.14)	1.82 (1.61 to 2.07)
Country of birth	0.31 (0.27 to 0.35)	0.15 (0.13 to 0.17)	1.08 (0.93 to 1.25)	1.09 (0.94 to 1.26)	0.99 (0.85 to 1.16)

*Model 0: crude. Model 1: Model 0 adjusted for the other two socioeconomic variables. Model 2: Model 1 adjusted for sex and age. Model 3: Model 2 adjusted for sex, age and the Charlson Comorbidity Index. Model 4: Model 3 adjusted for family structure, type of house, civil status and region of residence.