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Table 3 Characteristic of asymptomatic (n= 13) patients positive for COVID-19 RT-PCR compared to asymptomatic (n=10) patients negative for COVID-19 RT-PCR

From: COVID-19 screening before gastrointestinal procedures

  Asymptomatic COVID-19 PCR-positive (n=13) Asymptomatic COVID-19 PCR-negative (n=10) Test p value
Age Mean 55.07 39.2 T = 2.35 0.028
±SD 15.5 16.7
Sex Male 8 61.5% 2 20% X2 = 3.9 0.046
Female 5 38.5% 8 80%
Procedure Urgent 3 23.1% 1 10% X2 = 2.26 0.322
Semi-urgent 5 38.5% 2 20%
Elective 5 38.5% 7 70%
DM No 9 69.2% 8 80% X2 = 0.34 0.560
Yes 4 30.8% 2 20%
HTN No 13 100% 9 90% X2 = 1.35 0.244
Yes 0 0% 1 10%
Lymphopenia No 11 84.6% 8 80% X2 = 0.084 0.772
Yes 2 15.4% 2 20%
CRP Negative 13 100% 10 100% ------ -------
Positive 0 0% 0 0%
COVID-19 IgM only Negative 11 84.6% 8 80% X2 = 0.83 0.772
Positive 2 15.4% 2 20%
COVID-19 IgM and IgG Negative 2 15.4% 10 100% X2 = 16.2 < 0.001
Positive 11 84.6% 0 0%
COVID-19 IgG only Negative 13 100% 2 20% X2 = 15.9 < 0.001
Positive 0 0% 8 80%
  1. DM diabetes mellitus, HTN hypertension, CRP C-reactive protein