Table 1.
Characteristics of JIA patients participating in the two periods of surveillance for acute respiratory infections and in the phase of vaccination against influenza virus
| SV 1 | SV 2 | Vaccination | |
|---|---|---|---|
| Patients (n) |
61 |
63 |
44 |
| Age, mean (years) |
10.7 |
10.9 |
11.0 |
|
ILAR categories n (%) |
|||
| Oligoarthritis extended |
8 (13.1) |
12 (19) |
9 (20.4) |
| Oligoarthritis persistent |
12 (19.6) |
11 (17.4) |
11 (25) |
| Polyarticular RF - |
20 (32.7) |
19 (30.1) |
12 (27.3) |
| Polyarticular RF+ |
4 (6.5) |
5 (7.9) |
4 (9) |
| Systemic |
13 (21.3) |
13 (20.6) |
7 (16) |
| Undifferentiated arthritis |
4 (6.5) |
3 (4.8) |
1 (2.3) |
| Use of immunosuppressant, DMARDS or anti-TNF drugs, n (%) |
34 (55.7) |
43 (68.2) |
31(70) |
| Use of corticosteroids, n (%) |
5 (8.2) |
5 (7.9) |
6 (13.6) |
| (mean daily dose corticosteroids: mg/kg/day) |
0.45 (0.05-1) |
0.34 (0.1-0.5) |
0.3 (0.1-0.6) |
| Active disease n (%) | 21 (34.4) | 25 (39.6) | 25(57) |
Surveillance for respiratory infections: from March to August 2007- surveillance 1 (SV1) and from March to August 2008 – surveillance 2 (SV2). ILAR: International League of Associations for Rheumatology, RF: rheumatoid factor.