Table 1 Sample characteristics, stratified by CFQ case-ness* during follow-up: n (%) or mean (SD).

From: Fatigue in children and young people up to 24 months after infection with SARS-CoV-2

Characteristic

CFQ case ever

N = 581 (61.6%)

CFQ case never

N = 362 (38.4%)

Demographics

  

Sex at birth

  

Female

448 (77.1%)

197 (54.4%)

Male

133 (22.9%)

165 (45.6%)

Age at infection (years)

15.0 (1.9)

13.9 (2.1)

English Index of Multiple Deprivation

  

quintile 1 - most deprived

101 (17.4%)

66 (18.2%)

quintile 2

120 (20.7%)

67 (18.5%)

quintile 3

113 (19.4%)

64 (17.7%)

quintile 4

125 (21.5%)

63 (17.4%)

quintile 5 - least deprived

122 (21.0%)

102 (28.2%)

Ethnicity

  

Asian/Asian British

95 (16.4%)

53 (14.6%)

Black/African/Caribbean/British

22 (3.8%)

12 (3.3%)

Mixed

26 (4.5%)

16 (4.4%)

Other

11 (1.9%)

5 (1.4%)

Prefer not to say

2 (0.3%)

3 (0.8%)

White

425 (73.1%)

273 (75.4%)

Baseline characteristics (reported April-May 2021)

  

EHCP

22 (3.8%)

14 (3.9%)

Learning difficulties at school

38 (6.5%)

15 (4.1%)

Often felt very tired in early March 2020

283 (48.7%)

68 (18.8%)

Unusual fatigue/tiredness reported as main acute infection (in Jan-March 2021) symptom

101 (17.4%)

33 (9.1%)

PCC prevalence

  

Met research definition 3-months post-infection

207 (35.6%)

26 (7.2%)

Persistently met research definition at all follow-ups

68 (11.7%)

0 (0.0%)

  1. EHCP, Educational Health and Care Plan. PCC: Post-Covid Condition *Case-ness was defined as Chalder Fatigue Scale (CFQ) total score ≥4. Participants were classified as ever meeting CFQ case-ness if they met threshold at any follow-up.