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Table 1 Demographic data and clinical descriptors of Portuguese and Brazilian juvenile idiopathic arthritis populations

From: Spotlight on latent tuberculosis infection screening for juvenile idiopathic arthritis in two countries, comparing high and low risk patients

 

Portuguese

Brazilian

p value

Total

Number of patients (%)

188 (64.4)

104 (35.6)

292 (100)

Current age (mean ± SD)

(years)

16.3 ± 7.1

10.7 ± 3.9

 < 0.001

14.3 ± 6.7

Disease duration (mean ± SD)

(years)

9.1 ± 6.8

4.5 ± 2.9

 < 0.001

7.5 ± 6.2

Female (%)

108 (57.4)

71 (68.3)

0.069

179 (61.3)

JIA categories (%)*

    

 Persistent oligoarticular

35 (18.6)

24 (23.1)

0.36

59 (20.2)

 Extended oligoarticular

26 (13.8)

9 (8.7)

0.19

35 (12)

 Polyarticular RF negative

35 (18.6)

34 (32.7)

0.006

69 (23.6)

 Polyarticular RF positive

14 (7.4)

6 (5.8)

0.58

20 (6.8)

 Enthesitis related arthritis

40 (21.3)

11 (10.6)

0.02

51 (17.5)

 Systemic onset

14 (7.4)

13 (12.5)

0.15

27 (9.2)

 Psoriatic arthritis

11 (5.9)

4 (3.8)

0.45

15 (5.1)

 Undifferentiated or unclassified

2 (1.1)

2 (1.9)

0.54

4 (1.4)

 Not reported

11 (5.9)

1 (1)

12 (4.1)

  1. p-value < 0.05 are shown in bold
  2. JIA, Juvenile Idiopathic Arthritis; RF, rheumatoid factor