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Table 3 Bivariate and multivariable analysis of the association of study variables with SARS-CoV-2 infection seroprevalence among AMSM and ATGW in the PrEP1519 cohort, Salvador, Brazil, 2020.

From: Seroprevalence of anti-SARS-CoV-2 antibodies and factors associated with infection among adolescent men who have sex with men and transgender women in Salvador, Brazil

Variables

COVID-19 (IgG+/IgM+)

 

Bivariate analysis

Multivariable analysis**

Sociodemographic

n/N

%

P-value

aPP (95% CI) ***

Age

  

0.244

  

  16-18 years

12/46

26.1

   

  19-21 years

16/91

17.6

   

Population group

  ATGW

5/24

20.8

0.976

  

  AMSM

22/107

20.6

   

Household

Number of household members

  

0.099

  

  ≤ 3 people

10/68

14.7

   

  > 3 people

18/69

26.1

   

Living alone

  

0.508*

  

  No

27/131

20.6

   

  Yes

1/3

33.3

   

Living with the mother

  

0.074

  

  No

6/48

12.5

   

  Yes

22/86

25.6

   

Living with siblings

  

0.025

  

  No

12/82

14.6

   

  Yes

16/52

30.8

   

Number of rooms at home

  

0.863

  

  >3 rooms

21/101

20.8

   

  ≤ 3 rooms

7/36

19.4

   

Access to healthcare services

  

0.678*

  

  Exclusively SUS

19/97

19.6

   

  Exclusively private health plan

3/9

33.3

   

  Direct payment for consultations

-

-

   

  Mixed (all of the above)

5/24

20.8

   

Adherence to SARS-CoV-2 prevention measures

Quarantine

  

0.145

  

  No

6/18

33.3

   

  Yes

22/119

18.5

   

Using mask in public places

  

0.034

  

Always

18/106

17.0

 

1.00

 

Never

9/25

36.0

 

2.22

(1.08-4.57)

Frequent hand washing

  

0.934

  

  No

14/67

20.9

   

  Yes

13/64

20.3

   

Perceptions about COVID-19

SARS-CoV-2 infection risk perception

  

0.063*

  

  Low

4/41

9.8

   

  High

24/96

25.0

   

Perception of severity

  

0.873*

  

  Low

1/7

14.3

   

  Moderate

12/51

23.5

   

  High

14/73

19.2

   

Believing that they can be easily cured of the disease

  

0.032

  

  No

17/102

16.7

 

1.00

 

  Yes

11/32

34.4

 

2.05

(1.05-4.01)

Behavioral

     

Alcohol use during quarantine

  

0.478

  

  No

10/60

16.7

   

  Yes, and with increased frequency

9/33

27.3

   

  Yes, albeit with the same frequency

8/37

21.6

   

Sexual partner during the pandemic

  

0.064*

  

  No

9/43

20.9

   

  Yes, with a steady partner

7/45

15.6

   

  Yes, with casual partners

3/25

12.0

   

  Yes, with both

8/18

44.4

   
  1. * Fisher's exact test
  2. ** Adjusted by population and hand washing
  3. *** aPR = adjusted prevalence ratios; CI = confidence intervals