Table 3.
Comparative JIA Epidemiology: developing and developed countries
| JIA Subtypes | Zambia* | South Africa8 | India13 | Turkey14 | Norway11 | UK11 |
|---|---|---|---|---|---|---|
| Number in the studied series |
78 |
78 |
224 |
196 |
172 |
572 |
| Systemic JIA (%) |
14.1 |
7.7 |
8 |
15.3 |
17.4 |
14.7 |
| Polyarticular RF (−) JIA (%) |
34.6 |
14 |
17 |
30.6 |
25.8 |
19.5 |
| Polyarticular RF (+) JIA (%) |
11.5 |
26.9 |
12 |
6.6 |
2.9 |
5.2 |
| Oligoarticular arthritis (%) |
32.1 |
26 |
21 |
34.1 |
27.3 |
43.7 |
| Psoriatic arthritis JIA (%) |
1.3 |
1.3 |
1 |
1 |
4.6 |
7.5 |
| Enthesitis related arthritis (%) |
6.4 |
23 |
36 |
10.3 |
6.3 |
6.9 |
| Others |
0 |
0 |
5 |
2.5 |
15.6 |
2 |
| Female : Male Ratio |
1.2:1 |
1:1 |
- |
1:1.1 |
2.2:1 |
2.0:1 |
| Eye involvement |
11.5 |
- |
- |
2 |
14.5 |
20 |
| ANA Positivity | - | 4.48 (§3/67) | - | 14.2 | 41.2 | 33 |
*Current Report from Zambia-Chipeta J et al.; §Note that ANA was done and available only in 67 of the 78 South African JIA case series. 8, 13,14,11 Respective data source references.