Patient’s experiences with the care for juvenile idiopathic arthritis across Europe

Table 1 Patient demographics

	Western countries	Non-western countries	P-value^a
N	420	202
Female, n (%)	286 (68.1%)	129 (63.9%)	0.34
Age at completion, median [1st quartile, 3rd quartile]	10 [7, 15]	11 [8, 15]	0.50
Age at diagnosis, median [1st quartile, 3rd quartile]	5 [2, 9]	5 [3, 10]	0.04
Self-reported JIA category, n (%)
Systemic	57 (13.6%)	23 (11.4%)	0.53
Oligoarthritis	106 (25.2%)	62 (30.7%)	0.18
Polyarthritis RF -	103 (24.5%)	41 (20.3%)	0.29
Polyarthritis RF +	46 (11.0%)	14 (6.9%)	0.15
Psoriatic	21 (5.0%)	5 (2.5%)	0.21
ERA	25 (6.0%)	12 (5.9%)	> 0.99
Undifferentiated	19 (4.5%)	1 (0.5%)	0.02
Don’t know	43 (10.2%)	44 (21.8%)	0.0002

^aP-value of the test of differences between western and non-western countries. For categorical data Pearson’s χ²-test was used; for continuous data the Mann-Whitney U test
Abbreviations: ERA enthesitis-related arthritis, JIA juvenile idiopathic arthritis, RF rheumatoid factor

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