Table 1.
Comparison of characteristics of patients with Juvenile Psoriatic Arthritis (JPsA) in the different groups
| ERA N=16 | Persistent oligoarticular N=44 | Extended oligoarticular N=21 | RF- polyarticular N=34 | Polyarticular course N=55 | Total cohort N=115 | P value | |
|---|---|---|---|---|---|---|---|
|
Female:male |
1:2.2 |
2.7:1 |
1:1.6 |
1:3.9 |
2.5:1 |
2:1 |
0.006* |
|
Mean age at diagnosis in years# (median) |
11.6±2.2 (12.1) |
7.7±4.3 (7.4) |
6.6±5 (3.5) |
7.4±4.2 (7.2) |
7.1±4.5 (5.8) |
8±4.4 (8.1) |
0.003** |
|
Mean Length of follow-up in years# (median) |
4.8±2.3 (4.9) |
5.9±3.8 (4.9) |
7.2±0.9 (6) |
6.6±0.7 (6.5) |
6.8±4.6 (6.1) |
6.2±4.1 (5.3) |
0.3** |
|
Family history of psoriasis (percentage) |
8 (50) |
26 (59) |
12 (57) |
22 (65) |
34 (62) |
68 (59) |
0.8** |
|
Number of patients with positive ANAa |
1/14 |
14/40 |
11/19 |
13/29 |
24/49 |
39/103 |
0.07** |
|
Number of patients with positive HLA-B27 |
6/15 |
3/18 |
0/8 |
1/8 |
1/17 |
10/50 |
0.0001* |
|
Number of patients with asymptomatic uveitis (acute uveitis) |
0 (5) |
6 (0) |
3 (0) |
4 (0) |
7 (0) |
13 (5) |
0.6* |
| Number of patients with dactylitis | 3 | 11 | 11 | 11 | 22 | 36 | 0.09* |
#- values are shown as mean plus/minus standard deviation.
a=Positive anti-nuclear antibody (ANA) defined as at least one positive ANA result.
* Anova.
**chi-square analysis.