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. 2014 Jun 11;12:22. doi: 10.1186/1546-0096-12-22

Table 2.

Patterns of autoantibodies collected in 17 of 192 patients from the Nordic juvenile idiopathic arthritis database

Patient No Age at time of onset
 IgM RF Cut-off
 IgA RF Cut-off
 IgG Anti-CCP Cut-off
 IgG Anti-Collagen II Cut-off
 Articular damage ¤ JIA category # Cumulative number of joints affected during the first eight years of disease
Years > 5 U/ml > 9 U/ml > 7 U/ml > 29 U/ml
1
 4.4
 5.7
 -
 -
 -
 Missing
 Systemic
 4
2
 12.8
 6.0
 -
 -
 -
 -
 Oligoarticular persistent
 2
3
 13.5
 23.0
 -
 -
 -
 -
 Undifferentiated*
 1
4
 9.4
 5.5
 -
 -
 -
 -
 Oligoarticular persistent
 2
5
 9.3
 -
 13.0
 -
 -
 -
 Enthesitis-related arthritis
 4
6
 1.5
 -
 14.0
 -
 -
 1
 Oligoarticular extended
 18
7
 13.2
 64.0
 17.0
 -
 -
 1
 Polyarticular RF-positive
 13
8
 13.3
 132.0
 67.0
 ≥ 340
 -
 1
 Undifferentiated**
 18
9
 10.9
 17.0
 -
 ≥ 340
 -
 1
 Oligoarticular extended
 24
10
 1.1
 -
 -
 9.8
 -
 -
 Systemic
 6
11
 11.8
 -
 23.0
 15.0
 -
 -
 Enthesitis-related arthritis
 2
12
 11.0
 -
 11.0
 12.0
 94.3
 1
 Polyarticular RF-negative
 19
13
 11.7
 -
 -
 -
 35.9
 1
 Polyarticular RF-negative
 34
14
 4.0
 -
 -
 -
 46.6
 -
 Enthesitis-related arthritis
 13
15
 4.8
 -
 -
 -
 30.4
 -
 Oligoarticular extended
 9
16
 4.3
 -
 -
 -
 72.9
 -
 Undifferentiated***
 2
17 8.1 - - - 230.8 Missing Oligoarticular persistent 1

¤Articular damage at eight-year follow-up according to JADI-A (score 0–72) [19].

#ILAR Edmonton criteria after eight years of disease [2].

*Oligoarticular persistent joint pattern and presence of IgM rheumatoid factor on two occasions more than three months apart.

**Polyarticular pattern from onset and psoriasis in first degree relative.

***Oligoarticular persistent joint pattern and psoriasis in first degree relative.