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Table 4 Evaluation of epidemiological and clinical variables according to IgG persistence 90 days after diagnosis

From: Dynamics of anti-SARS-CoV-2 IgG antibodies post-COVID-19 in a Brazilian Amazon population

Variables

 

2nd IgG test

p

N

Persistent

n = 87

n (%)

Nonpersistent

n = 38

n (%)

Sex

 Female

83

56 (64.0)

27 (70.5)

0.6017*

 Male

42

31 (36.0)

11 (29.5)

 

Age

 < 60 years old

94

61 (73.3)

33 (85.3)

0.0773*

 ≥ 60 years old

31

26 (26.7)

5 (14.7)

 

Symptoms

 Yes

123

87 (100)

36 (94.1)

0.1902**

 No

02

0

2 (5.9)

 

Duration of symptoms

 ≤ 7 days

40

24 (26.7)

16 (50.0)

0.1424*

 15 days

39

28 (33.7)

11 (29.4)

 

 ≥ 21 days

44

35 (39.6)

9 (20.6)

 

Hospitalization

 Yes

11

10 (10.5)

1 (2.9)

0.1756*

 No

114

77 (89.5)

37 (97.1)

 

Supplemental oxygen

 Yes

11

10 (10.5)

1 (2.9)

0.1756**

 No

114

77 (89.5)

37 (97.1)

 

H1N1 vaccine

 Yes

106

71 (81.4)

35 (91.2)

0.1997**

 No

19

16 (18.6)

3 (8.8)

 

BCG vaccine

 Yes

102

71 (88.4)

31 (79.4)

0. 6766**

 No

09

5 (5.8)

4 (11.8)

 

 Unknown

08

5 (5.8)

3 (8.8)

 
  1. *Chi-squared test; **G test