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Table 3 Univariate and multivariate analysis of factors associated with positive anti-SARS-CoV-2 antibodies

From: Prevalence and associated characteristics of anti-SARS-CoV-2 antibodies in Mexico 5 months after pandemic arrival

 

IgM/IgG

Univariable

 

Multivariable

 
 

Negative

Positive

OR

95% CI

P

OR

95% CI

P

Sex

 Males, n (%)

1891 (61.5)

117 (60.6)

0.96

0.72–1.30

0.82

   

City of residence

 Guadalupe, n (%)

1846 (60.0)

124 (64.2)

1.20

0.89–1.62

0.26

   

Occupation

 Police, firefighters & public safety, n (%)

982 (31.9)

69 (35.8)

1.19

0.88–1.61

0.27

   

 Office/Management, n (%)

660 (21.5)

36 (18.7)

0.84

0.58–1.21

0.41

   

 Cleaning/Mantainance, n (%)

583 (18.9)

25 (12.9)

0.64

0.41–0.98

0.04

0.71b

0.46–1.10

0.13

 Health-care workers, n (%)

155 (5.0)

8 (4.1)

0.82

0.40–1.68

0.73

   

 Other, n (%)

695 (22.7)

55 (28.6)

1.37

0.99–1.89

0.06

   

Comorbidities

 Hypertension, n (%)

269 (8.7)

18 (9.3)

1.07

0.65–1.77

0.79

   

 Diabetes, n (%)

273 (8.9)

14 (7.3)

0.80

0.46–1.40

0.51

   

 Obesity, n (%)

1164 (37.9)

77 (39.9)

1.09

0.81–1.47

0.59

   

 Any comorbiditiea, n (%)

1481 (48.2)

100 (51.8)

1.16

0.87–1.55

0.34

   

COVID-19 symptoms

 Asymptomatic, n (%)

2627 (85.4)

114 (59.1)

0.25

0.18–0.33

 < 0.001

   

 Symptomatic, n (%)

448 (14.6)

79 (40.9)

4.06

2.99–5.51

 < 0.001

3.91b

2.86–5.35

 < 0.001

 Cough, n (%)

119 (3.9)

47 (24.4)

7.98

5.49–11.65

 < 0.001

4.17c

2.50–6.93

 < 0.001

 Sore throat, n (%)

202 (6.6)

33 (17.1)

2.93

1.96–4.38

 < 0.001

   

 Nasal discharge, n (%)

85 (2.8)

15 (7.8)

2.97

1.68–5.24

0.001

   

 Shortness of breath, n (%)

40 (1.3)

21 (10.9)

9.26

5.34–16.06

 < 0.001

   

 Headache, n (%)

173 (5.6)

32 (16.6)

3.33

2.21–5.02

 < 0.001

   

 Anosmia, n (%)

63 (2.0)

40 (20.7)

12.62

8.22–19.37

 < 0.001

5.75c

3.41–9.71

 < 0.001

 Diarrhea, n (%)

92 (3.0)

23 (11.9)

4.39

2.71–7.12

 < 0.001

   

 Muscle pain, n (%)

98 (3.2)

31 (16.1)

5.81

3.77–8.97

 < 0.001

   

 Fever, n (%)

62 (2.0)

29 (15.0)

8.59

5.38–13.72

 < 0.001

2.44c

1.30–4.58

0.006

 Contact with confirmed case, n (%)

416 (13.5)

39 (20.2)

1.62

1.12–2.34

0.013

   
  1. aOther cardiovascular, allergic, endocrine, and neurological diseases. bAdjusted for cleaning/maintenance, symptoms, and contact with a confirmed case. cAdjusted for contact with a confirmed case, cleaning/maintenance, sore throat, and headache. OR Odds ratio, CI Confidence interval
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BMC Infectious Diseases

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