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Table 3 Correlation between basic characteristics of participants and post-vaccination adverse events

From: Safety of the BNT162b2 mRNA COVID-19 vaccine in children and adolescents with juvenile idiopathic arthritis: a tertiary-center early experience

Post-vaccination adverse events

Age

Mean

(SD)

Gender

%

Associated comorbidity

%

Previous COVID infection

%

Disease duration

Mean

(SD)

JADAS-10 before vaccination

Mean

(SD)

Local AE (at least one AE)

Yes 13.8 (3.0)

No 12.3 (3.0)

P = 0.3

F 70.8

M 58.3

P = 0.5

Yes 62.5

No 67.9

P = 1

Yes 60

No 67.1

P = 1

Yes 4.4 (2.6)

No 4.7 (2.7)

P = 1

Yes 1.3 (1.3)

No 1.6 (1.7)

P = 0.6

 Pain at site of injection

Yes 13.6 (3.1)

No 12.8 (3.0)

P = 0.6

F 62.5

M 58.3

P = 1

Yes 62.5

No 60.7

P = 1

Yes 40

No 64.5

P = 0.4

Yes 4.3 (2.7)

No 4.9 (2.5)

P = 0.6

Yes 1.4 (1.4)

No 1.5 (1.6)

P = 0.9

 Swelling

Yes 12.7 (3.8)

No 13.5 (2.9)

P = 0.8

F 20.8

M 25

P = 1

Yes 37.5

No 17.9

P = 0.3

Yes 0

No 25.8

P = 0.6

Yes 4.1 (2.6)

No 4.6 (2.6)

P = 0.7

Yes 1.3 (1.1)

No 1.5 (1.5)

P = 0.9

 Erythema

Yes 13.8(3.4)

No 13.1 (3)

P = 0.5

F 25

M 25

P = 1

Yes 50

No 17.9

P = 0.1

Yes 0

No 29

P = 0.3

Yes 4.2 (2.6)

No 4.6 (2.6)

P = 0.8

Yes 1.7 (1.3)

No 1.3 (1.5)

P = 0.4

 Ipsilateral painful LNs

Yes ( −) ( −)

No 13.3 (3.1)

P =  − 

F 0

M 0

P =  − 

Yes 0.0

No 0.0

P =  − 

Yes 0

No 0

P =  − 

Yes ( −) ( −)

No 4.5 (2.6)

P = ( −)

Yes ( −) ( −)

No 1.4 (1.5)

P = ( −)

Systemic AE (at least one AE)

Yes 13.6 (3.0)

No 12.8 (3.2)

P = 0.4

F 66.7

M 50

P = 0.5

Yes 62.5

No 60.7

P = 1

Yes 80

No 58

P = 0.6

Yes 4.3 (2.7)

No 4.8 (2.4)

P = 0.5

Yes 1.7 (1.5)

No 1 (1.3)

P = 0.2

 Fever

Yes 14.2 (1.7)

No 12.8 (3.3)

P = 0.07

F 25

M 25

P = 1

Yes 25

No 25

P = 1

Yes 20

No 25.8

P = 1

Yes 4.4 (2.9)

No 4.5 (2.5)

P = 0.7

Yes 1.9 (1.5)

No 1.3 (1.4)

P = 0.2

 Chills

Yes 11.6 (3.2)

No 13.5 (3.0)

P = 0.4

F 4.2

M 25

P = 0.1

Yes 12.5

No 10.7

P = 1

Yes 0

No 12.9

P = 1

Yes 4 (0.8)

No 4.6 (2.7)

P = 0.6

Yes 1.4 (1.1)

No 1.4 (1.5)

P = 0.9

 Headache

Yes 14.2 (2.9)

No 12.6 (3.1)

P = 0.1

F 54.2

M 25

P = 0.1

Yes 37.5

No 36.4

P = 0.7

Yes 80

No 38.7

P = 0.1

Yes 4.9 (2.8)

No 4.2 (2.4)

P = 0.4

Yes 1.5 (1.6)

No 1.4 (1.4)

P = 0.7

 Diarrhea

P =  − 

P =  − 

P =  − 

P =  − 

P =  − 

P =  − 

 Nausea

Yes 15.2 (1)

No 12.8 (3.2)

P = 0.03

F 25

M 8.3

P = 0.4

Yes 25

No 17.9

P = 0.6

Yes 40

No 16.1

P = 0.2

Yes 3.9 (1.9)

No 4.7 (2.7)

P = 0.5

Yes 1.5 (1.6)

No 1.4 (1.5)

P = 0.8

 Myalgia

Yes 13.3 (2.6)

No 13.2 (3.4)

P = 1

F 37.5

M 50

P = 0.5

Yes 25

No 44.4

P = 0.4

Yes 80

No 35.5

P = 0.1

Yes 3.5 (2.2)

No 5.2 (2.3)

P = 0.06

Yes 1.9 (1.6)

No1.1 (1.3)

P = 0.2

 Tiredness

Yes 13.6 (2.8)

No 13.1 (3.3)

P = 0.7

F 45.8

M 33.3

P = 0.5

Yes 50

No 58.3

P = 0.7

Yes 60

No 38.7

P = 0.6

Yes 4.6 (2.9)

No 4.5 (2.4)

P = 0.9

Yes 1.3 (1.2)

No 1.5 (1.6)

P = 1

 New transient joint pain

Yes 10.3 (3.1)

No 13.6 (3.0)

P = 0.1

F 4.2

M 16.7

P = 0.3

Yes 12.5

No 5.6

P = 0.5

Yes 0

No 9.7

P = 1

Yes 3 (2)

No 4.6 (2.6)

P = 0.3

Yes 2 (1.0)

No 1.4 (1.5)

P = 0.3

 Allergy

Yes 12.5 ( −)

No 13.3 (3.1)

P = 0.7

F 0

M 8.3

P = 0.3

Yes 0.0

No11.1

P = 1

Yes 0

No 3.2

P = 1

Yes 4 ( −)

No 4.5 (2.6)

P = 0.8

Yes 2.5 ( −)

No 1.4 (1.5)

P = 0.6

 Flaring of 1ry disease

Yes 7 ( −)

No 13.5 (3)

P = 0.1

F 4.2

M 0

P = 1

P =  − 

Yes 0

No 3.2

P = 1

Yes 5 ( −)

No 4.5 (2.6)

P = 0.8

Yes 1 ( −)

No 1.4 (1.5)

P = 1

 Chest pain

Yes 11.5 (6.4)

No 13.4 (2.9)

P = 0.7

F 8.3

M 0

P = 0.5

Yes 0.0

No 8.3

P = 1

Yes 0.0

No 6.5

P = 1

Yes 5 (0.0)

No 4.5 (2.7)

P = 0.6

Yes 0.5 (0.7)

No 1.5 (1.5)

P = 0.5

 Serious AE

P =  − 

P =  − 

P =  − 

P =  − 

P =  − 

P =  − 

  1. Abbreviations: AE Adverse events, JADAS-10 Juvenile Arthritis Disease Activity Score-10