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Table 1 Risk factors for SARS-CoV-2 related to the seroprevalence of IgG anti-SARS-CoV-2 antibodies

From: Migration in times of pandemic: SARS-CoV-2 infection among the Warao indigenous refugees in Belém, Pará, Amazonia, Brazil

Risk factors Total
n = 94
% Positive
n = 84
% Negative
n = 10
% OR IC 95% p-values
Hypertension
Yes 9 9.6 9 10.7 0 0.0 3.71960E+ 08 0.0 - a 0.9990
No 85 90.4 75 89.3 10 100.0 Ref.   
Smoking
Yes 25 26.6 23 27.4 2 20.0 2.34 0.30–18.21 0.4180
No 69 73.4 61 72.6 8 80.0 Ref.   
Alcohol abuse
Yes 35 37.2 31 36.9 4 40.0 0.78 0.15–4.20 0.7760
No 59 62.8 53 63.1 6 60.0 Ref.   
Diabetes
Yes 3 3.2 2 2.4 1 10.0 0.20 0.01–3.28 0.259
No 91 96.8 82 97.6 9 90.0 Ref.   
Asthma or bronchitis
Yes 1 1.1 1 1.2 0 0.0 6.54708E+ 08 0.0 - a 1.0000
No 93 98.9 83 98.8 10 100.0 Ref.   
Cancer
Yes 1 1.1 1 1.2 0 0.0 6.54708E+ 08 0.0 - a 1.0000
No 93 98.9 83 98.8 10 100.0 Ref.   
Cardiovascular disease
Yes 1 1.1 1 1.2 0 0.0 0.88 0.0 - a 1.0000
No 93 98.9 83 98.8 10 100.0 Ref.   
Heart disease
Yes 3 3.2 3 3.6 0 0.0 7.41501E+ 08 0.0 - a 0.999
No 91 968 81 96.4 10 100.0 Ref.   
Sickle cell anemia
Yes 0 0.0 0 0.0 0 0.0  
No 94 100.0 84 100.0 10 100.0   
Tuberculosis
Yes 3 3.2 3 3.6 0 0.0 2.06304E+ 08 0.0 - a 1.0000
No 91 96.8 81 96.4 10 100.0 Ref.   
Autoimmune disease
Yes 2 2.1 1 1.2 1 10.0 0.0 0.0 - a 0.999
No 92 97.9 83 98.8 9 90.0 Ref.   
Another chronic illness
Yes 4 4.3 3 3.6 1 10.0 1.43366E+ 08 0.0 - a 0.999
No 90 95.7 81 96.4 9 90.0 Ref.   
  1. a number tends to infinity; OR: Odds ratio (adjusted)