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Table 2 Characteristics of asymptomatic patients (n= 100) positive for COVID-19 rapid IgM/IgG antibodies

From: COVID-19 screening before gastrointestinal procedures

  Asymptomatic COVID-19 Ab negative
(n=77)
Asymptomatic COVID-19 Ab positive
(n=23)
Test p value
Age Mean 45.4 48.2 T = 0.67 0.504
±SD 17.02 17.6
Sex Male 49 63.6% 10 43.5% X2 = 2.9 0.085
Female 28 36.4% 13 56.5%
Procedure urgency Urgent 19 24.7% 4 17.4% X2 = 0.64 0.725
Semi-urgent 19 24.7% 7 30.4%
Elective 39 50.6% 12 52.2%
DM No 70 90.9% 17 73.9% X2 = 4.5 0.033
Yes 7 9.1% 6 26.1%
HTN No 70 90.9% 22 95.7% X2 = 0.54 0.462
Yes 7 9.1% 1 4.3%
Lymphopenia No 73 94.8% 19 82.6% X2 = 3.57 0.059
Yes 4 5.2% 4 17.4%
CRP Positive 54 70.1% 23 100% X2 = 8.9 0.003
Negative 23 29.9% 0 0%
COVID-19 RT-PCR Negative --- --- 10 43.5% ------ -----
Positive --- --- 13 56.5%