Table 2 Adjusted Prevalence Ratios and 95% confidence intervals (CI) for factors associated with the reporting of COVID-19 symptoms, testing and receiving a positive result, older adults, Brazil (July–November)

  Older adults only

0.726***

(0.68, 0.77)

0.910

(0.82, 1.01)

1.013

(0.80, 1.29)

  Multigenerational

0.722***

(0.67, 0.78)

0.815***

(0.73, 0.92)

1.532**

(1.15, 2.04)

  Skipped generation

0.775***

(0.68, 0.88)

0.729**

(0.60, 0.89)

1.607*

(1.04, 2.48)

  Adults and older adults

0.735***

(0.69, 0.78)

0.945

(0.86, 1.04)

1.269*

(1.00, 1.61)

 Age (in years)

1.000

(1.00, 1.00)

0.984***

(0.98, 0.99)

0.975***

(0.97, 0.98)

 Female (versus male)

1.019

(0.98, 1.06)

0.913**

(0.86, 0.98)

0.882

(0.75, 1.03)

  Black

1.088*

(1.01, 1.17)

0.945

(0.84, 1.07)

0.929

(0.70, 1.24)

  Brown

1.091***

(1.04, 1.14)

0.925*

(0.86, 0.99)

1.138

(0.96, 1.35)

  Indigenous

1.493**

(1.13, 1.97)

1.813**

(1.21, 2.71)

1.895

(0.48, 7.55)

  Other

1.011

(0.81, 1.26)

0.921

(0.68, 1.25)

0.496

(0.22, 1.12)

  Less than high school

0.969

(0.91, 1.03)

1.082

(0.98, 1.20)

1.200

(0.97, 1.49)

  High school complete

0.892**

(0.83, 0.96)

1.579***

(1.40, 1.78)

1.942***

(1.47, 2.56)

  College or more

0.839***

(0.77, 0.92)

2.561***

(2.26, 2.90)

2.594***

(1.86, 3.61)

  2

0.972

(0.92, 1.02)

1.029

(0.97, 1.09)

1.066

(0.94, 1.20)

  3

0.953

(0.90, 1.01)

1.174***

(1.10, 1.25)

1.255**

(1.09, 1.45)

  4

0.895***

(0.84, 0.96)

1.464***

(1.36, 1.57)

1.541***

(1.31, 1.82)

  Northeast

0.893**

(0.83, 0.96)

0.819***

(0.73, 0.92)

0.345***

(0.24, 0.50)

  Southeast

0.781***

(0.73, 0.84)

0.435***

(0.39, 0.49)

0.112***

(0.08, 0.16)

  South

0.916*

(0.84, 0.99)

0.345***

(0.30, 0.39)

0.0778***

(0.05, 0.11)

  Center West

0.972

(0.89, 1.06)

0.948

(0.84, 1.07)

0.466***

(0.30, 0.72)

 Urban (versus rural)

1.016

(0.97, 1.07)

2.492***

(2.24, 2.77)

2.404***

(1.98, 2.92)

  Diabetes

1.236***

(1.18, 1.29)

1.227***

(1.15, 1.31)

1.538***

(1.33, 1.78)

  Hypertension

1.267***

(1.22, 1.32)

1.115***

(1.06, 1.17)

1.324***

(1.18, 1.48)

  Heart disease

1.494***

(1.42, 1.57)

1.330***

(1.24, 1.42)

1.253**

(1.06, 1.48)

  Asthma

1.998***

(1.89, 2.12)

1.552***

(1.44, 1.68)

1.495***

(1.22, 1.83)

  Cancer

1.364***

(1.25, 1.48)

1.228***

(1.10, 1.36)

1.284

(0.98, 1.69)

  Depression

1.771***

(1.67, 1.88)

1.237***

(1.14, 1.34)

1.468***

(1.20, 1.80)

 Proxy respondent (versus no)

0.608***

(0.58, 0.63)

0.934***

(0.90, 0.97)

1.024

(0.94, 1.12)

  August

0.888***

(0.86, 0.92)

1.389***

(1.35, 1.43)

1.513***

(1.41, 1.62)

  September

0.735***

(0.71, 0.77)

1.739***

(1.69, 1.79)

1.949***

(1.82, 2.09)

  October

0.735***

(0.57, 0.63)

2.068***

(2.00, 2.14)

2.266***

(2.11, 2.43)

  November

0.599***

(0.58, 0.63)

2.331***

(2.26, 2.41)

2.496***

(2.32, 2.68)

 Constant

0.605***

(0.05, 0.07)

0.007***

(0.00, 0.01)

0.000***

(0.00, 0.00)

 Random ID

1.147

(1.10, 1.20)

6.783

(6.65, 6.92)

11.247

(10.83, 11.68)