Table 4.

Logistic models for studying the relationship between immigration status and seroprevalence, adjusted for contextual and individual factors, in people living in France²: the national EpiCov cohort, round 1—May 2020

Immigration status	Relation with serological status adjustement for: contextual factors			Relation with serological statuts adjusted for: individual factors
	OR3	95% CI3	P-value3	OR3	95% CI3	P-value3
	Univariate			Adjusted for diploma		< 0.001
French native	Ref		< 0.001	Ref		< 0.001
1st gen immigrant from Europe4	1.2	[0.6–2.3]		1.3	[0.8–1.5]
1st gen immigrant from outside Europe4	2.4	[1.5–4.0]		2.7	[1.7–4.4]
2nd gen immigrant from Europe5	0.9	[0.5–1.5]		1.0	[0.6–1.6]
2nd gen immigrant from outside Europe5	1.5	[0.9–2.6]		1.6	[0.9–2.6]
	Adjusted for density		< 0.001	Adjusted for profession		< 0.001
French native	Ref		0.078	Ref		0.002
1st gen immigrant from Europe	1.1	[0.6–2.1]		1.3	[0.6–2.5]
1st gen immigrant from outside Europe	2.0	[1.2–3.2]		2.5	[1.6–4.1]
2nd gen immigrant from Europe	0.9	[0.5–1.4]		0.9	[0.6–1.6]
2nd gen immigrant from outside Europe	1.3	[0.8–2.2]		1.6	[1.0–2.7]
	Adjusted for household size		< 0.001	Adjusted for income decile		< 0.001
French native	Ref		0.078	Ref		0.042
1st gen immigrant from Europe	1.3	[0.7–2.5]		1.4	[0.7–2.7]
1st gen immigrant from outside Europe	2.0	[1.2–3.2]		2.6	[1.5–4.5]
2nd gen immigrant from Europe	0.9	[0.5–1.5]		0.9	[0.5–1.5]
2nd gen immigrant from outside Europe	1.2	[0.7–2.1]		1.7	[1.0–2.8]
	Adjusted for minor in the household		< 0.001	Adjusted for gender		0.052
French native	Ref		0.034	Ref		0.037
1st gen immigrant from Europe	1.3	[0.7–2.5]		1.2	[0.6–2.3]
1st gen immigrant from outside Europe	2.1	[1.3–3.5]		2.4	[1.5–3.9]
2nd gen immigrant from Europe	0.9	[0.5–1.5]		0.9	[0.5–1.5]
2nd gen immigrant from outside Europe	1.3	[0.8–2.2]		1.5	[0.9–2.6]
	Adjusted for overcrowded housing		< 0.001	Adjusted for age		< 0.001
French native	Ref		0.14	Ref		0.024
1st gen immigrant from Europe	1.2	[0.6–2.3]		1.4	[0.7–2.7]
1st gen immigrant from outside Europe	1.9	[1.1–3.3]		2.2	[1.3–3.5]
2nd gen immigrant from Europe	0.9	[0.5–1.5]		1.0	[0.6–1.6]
2nd gen immigrant from outside Europe	1.3	[0.8–2.3]		1.3	[0.8–2.2]
	Adjusted for deprived neighbourhood		0.21	Adjusted for tobacco use		0.024
French native	Ref		0.064	Ref		0.002
1st gen immigrant from Europe	1.2	[0.6–2.3]		1.2	[0.6–2.3]
1st gen immigrant from outside Europe	2.2	[1.2–3.7]		2.4	[1.5–3.9]
2nd gen immigrant from Europe	0.9	[0.5–1.5]		0.9	[0.5–1.5]
2nd gen immigrant from outside Europe	1.5	[0.9–2.4]		1.6	[0.9–2.6]
	Adjusted for density + household size			Adjusted for all individual factors
French native	Ref		0.49	Ref		0.0102
1st gen immigrant from Europe	1.2	[0.6–2.3]		1.6	[0.8–3.2]
1st gen immigrant from outside Europe	1.5	[0.9–2.5]		2.4	[1.4–4.0]
2nd gen immigrant from Europe	0.9	[0.5–1.4]		1.0	[0.6–1.7]
2nd gen immigrant from outside Europe	1.0	[0.6–1.7]		1.5	[0.9–2.5]

Bold is used to underline % and OR

¹Home sampling for finger prick/Euroimmun ELISA-S test

²People aged 15 or over, living in mainland France, but not in residential care homes for the elderly or prisons

³The sampling design is taken into account for the estimation of prevalence, crude and adjusted odds ratios, confidence intervals and tests, with the SAS procsurvey procedure. The percentages are weighted by sampling weight (the inverse of e inclusion probability), corrected for non-response probability and calibrated on the margin of the census. The prevalences are not equal to n/N. In each bivariate models, P-values are systematically given for the immigration status and for the corresponding contextual or individual adjustement variable

⁴First-generation immigrants: born non-French outside France and living permanently in France (including those who subsequently acquired French nationality)

⁵Second-generation immigrants: born and living in France, with at least one parent a first-generation immigrant