Table 1 Characteristics of the study population

From: Age-associated differences in mucosal and systemic host responses to SARS-CoV-2 infection

 

Young children

(0–5 yr, n = 39)

School-age children

(6–13 yr, n = 65)

Adolescents

(14–20 yr, n = 56)

Adults

(≥21 yr, n = 42)

p

Participant characteristics

 Median [IQR] age, years

3.0 [1.6, 4.9]

10.1 [8.4, 12.1]

17.1 [15.6, 18.5]

46.2 [40.1, 53.8]

<0.0001

 Female sex

25 (64%)

32 (49%)

30 (54%)

21 (50%)

0.48

 Obesitya

7 (27%)

18 (28%)

18 (32%)

6 (20%)

0.69

 Other comorbidities

3 (8%)

14 (22%)

10 (18%)

17 (45%)

0.001

SARS-CoV-2 infection status

    

0.66

 SARS-CoV-2-infected

29 (74%)

43 (66%)

39 (70%)

26 (62%)

 

 SARS-CoV-2-uninfected (healthy)

10 (26%)

22 (34%)

17 (30%)

16 (38%)

 

SARS-CoV-2 illness characteristics

 Asymptomatic

14 (48%)

20 (47%)

14 (36%)

2 (8%)

0.002

 Fever

13 (45%)

16 (37%)

16 (41%)

14 (54%)

0.59

 Cough

7 (24%)

10 (23%)

19 (49%)

19 (73%)

<0.0001

 Headache

3 (10%)

8 (19%)

19 (49%)

15 (58%)

<0.0001

 Abdominal pain

2 (7%)

4 (9%)

4 (10%)

8 (31%)

0.06

 Myalgias

0 (0%)

9 (21%)

13 (33%)

15 (58%)

<0.0001

 Nasal congestion

2 (7%)

3 (7%)

8 (21%)

17 (65%)

<0.0001

 Rhinorrhea

4 (14%)

1 (2%)

8 (21%)

14 (54%)

<0.0001

 Loss of smell

0 (0%)

4 (9%)

10 (26%)

19 (73%)

<0.0001

 Loss taste

0 (0%)

3 (7%)

10 (26%)

15 (58%)

<0.0001

 Median [IQR] nasopharyngeal viral load, log10 copies/mL

5.8 [4.0, 7.1]

5.1 [3.5, 7.0]

5.1 [3.7, 6.8]

5.7 [4.6, 6.8]

0.37

  1. IQR interquartile range, mL milliliter.
  2. aChildren < 2 years of age were excluded from these analyses; obesity data were missing from 11 adults.