Table 7 Multivariate model of individual and ecological risk factors associated with SARS-CoV-2 antibodies

City:

 -Talca

Ref

–

–

 -Coquimbo-La Serena

2.6

0.9–7.4

0.0795

 -Santiago

4.8

1.9–12.6

0.0013

Contact with a confirmed case:

 -No

Ref

–

–

 -Yes

4.2

2.1–8.2

 < 0.0001

Foreign:

 -No

Ref

–

–

 -Yes

4.7

1.8–12.7

0.0020

Sex:

 -Female

Ref

–

–

 -Male

1.5

0.9–2.5

0.0966

Age:

 -7–14

Ref

–

–

 -15–24

0.9

0.4–2.3

0.8967

 -25–39

1.1

0.5–2.5

0.7904

 -40–59

1.1

0.5–2.3

0.7720

 -60 and more

1.0

0.4–2.7

0.9858

People without university education (%)^b

4.0

1.2–14.1

0.0296

Population density^b

1.8

1.0–3.0

0.0387