Table 1 Cohort description

From: SARS-CoV-2 antibody responses in children exhibit higher FcR engagement and avidity than in adults

Extended cohort

SARS-CoV-2 RT-PCR+

Negative Controls

% (n)

Children

Adults

p-value

Children

Adults

Total samples

257

122

 

12

48

Total participants

146

85

   

Age (mean ± SD, range)

9.4 ± 4.8, 0.25-17

39.5 ± 15.2, 18–71

<2.2 × 10−16

9.6 ± 4.51, 2–14 years

35.1 ± 13.44, 19-60 years

Female

47.9% (70)

50.6% (43)

0.79

67% (8)

50.0% (29)

Asymptomatic

43.2% (63)

14.1% (12)

4.67 × 10−6

  

Mild/Moderate

56.8% (83)

85.9% (73)

  

Severe/Critical

0% (0)

0% (0)

  

Sample time point information – days post symptom onset (n = , median (IQR), range)

All time points

n = 257

15 (7–60), 0–206 days

n = 122

34.5 (11.5–62.8), 2–180 days

0.012

  

Acute time points

n = 128

7 (3–10), 0–14 days

n = 40

8 (4.8–11), 2–14 days

0.18

  

Convalescent time points

n = 129

60 (36–97), 15-206 days

n = 82

53 (33.8–85), 15–180 days

0.23

  

Participants with 1 timepoint

43.8% (64)

58.8% (50)

0.0018

  

Participants with 2 timepoints

38.4% (56)

38.8% (33)

  

Participants with 3 timepoints

15.8% (23)

2.4% (2)

  

Participants with 4 timepoints

2.1% (3)

0

  
  1. N.B. Statistical comparisons between children and adults made using Mann-Whitney test for continuous variables (age and time) and Fisher’s exact test for categorical (sex and symptom category). Significant differences in bold.
  2. IQR interquartile region.