Skip to main content

Table 3 Comparative JIA Epidemiology: developing and developed countries

From: Clinical patterns of juvenile idiopathic arthritis in Zambia

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
  1. * 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.