Table 1.
The demographic data and COVID-19 status of the studied groups
| Group | Group 1 original/Alpha [N = 74] | Group 2 Delta/Omicron [N = 34] | p value |
|---|---|---|---|
| Male, n (%) | 45 (61) | 22 (65) | 0.83** |
| Age [months], Median (IQR) | 76 (35–130) | 73 (45–118) | 0.82* |
| Race/ethnicity | |||
| White, n [%] | 72 (97,29) | 34 (100) | 1.0*** |
| African American, n [%] | 1 (1,35) | 0 | |
| Hispanic or Latino, n [%] | 1 (1,35) | 0 | |
| Weight [kg], median (IQR) | 22 (14–36) | 20 (16–33) | 0.81* |
| BMI percentile, median (IQR) | 46 (13–70) | 42 (8–68) | 0.53* |
| Positive anti-SARS CoV-2 antibodies, n [%] | 62 [84] | 28 [90] | 0.54** |
| Positive SARS CoV-2 PCR test, n [%] | 11 [15] | 0 | 0.017** |
| Confirmed SARS CoV-2 infection in the patient’s past history or confirmed SARS CoV-2 infection in the family, n [%] | 33 [45] | 11 [33] | 0.3** |
| Any type of infection in the past 8 weeks before hospitalization, n [%] | 20 [27] | 15 [44] | 0.12** |
| Vaccination against COVID-19, n [%] | 0 | 0 | |
IQR interquartile range, SARS-CoV-2 severe acute respiratory syndrome coronavirus 2, PCR polymerase chain reaction
*p value for Mann‒Whitney U test; **p value for Fisher’s exact test; ***p value for chi-square test