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Table 1 Socio–demographic and COVID-19 infection participants of survey participants (n = 936)

From: Acute and persistent symptoms of COVID-19 infection in school-aged children: a retrospective study from China

Characteristic

Frequency

%

Gender

  

Male

503

53.7

Female

433

46.3

Age (years)

  

3–6

185

19.8

7–9

237

25.3

10–12

296

31.6

13–16

218

23.3

Parental education level

  

Junior high school or below

141

15.1

Senior high school

162

17.3

Junior college

343

36.6

College or above

290

31.0

Presence of basic diseases*

  

No

728

77.8

Yes

208

22.2

Vaccination doses

  

None/one

80

8.5

Two

856

91.5

COVID-19 infection

  

Negative

295

31.5

Positive

641

68.5

Time between last vaccination and COVID-19 infection (n = 574)#

  

< 6 Months

47

8.2

6–12 Months

132

23.0

> 12 Months

395

68.8

Number of symptoms (n = 641)

  

0

75

11.7

1–3

296

46.2

> 3

270

42.1

Subjective feeling score (n = 641)

  

< 20

434

67.7

20–40

160

25.0

> 40

47

7.3

Treatment (n = 641)

  

Self-medication at home

466

72.7

Required medical attention

29

4.5

Both self-medication and required medical attention

34

5.3

Did not take medication

112

17.5

  1. *Basic diseases included genetic disorders (9, 1.0%), birth defects (1, 0.1%), hypertension (1, 0.1%), pneumonia (4, 0.4%), asthma (5, 0.5%), allergic rhinitis (138, 14.7%), eczema (27, 2.9%), food allergies (26, 2.8%), and history of surgery (25, 2.7%). #Missing data