IgA vasculitis (Henoch – Schönlein Purpura) as the first manifestation of juvenile Systemic Lupus Erythematosus: Case-control study and systematic review

Table 2 Age, gender and hemoglobin comparison in subjects with IgA vasculitis (HSP) versus subjects with IgA vasculitis (HSP) + juvenile Systemic Lupus Erythematosus (jSLE)

	HSP^a (n = 12,829)	HSP^b (n = 110)	HSP + jSLE (n = 15)	P-value HSP^a vs. HSP + jSLE	P-value HSP^b vs. HSP + jSLE
Age [years], mean (SD)	7.1 (2.8)	7.1 (3.5)	10.4 (3.3)	< 0.001^§	0.002^§
Gender [F], n (%)	5551 (43%)	61 (55%)	12 (80%)	0.003^¶	0.060^¶
Hb [g/L], mean (SD)	–	141 (12)	109 (17)	–	< 0.001^§

HSP^a: from the Systematic Review; HSP^b: from INP; ^§Wilcoxon’s signed rank test ^¶ χ² test. This table shows age and gender comparison in subjects with HSP from the systematic review versus subjects with HSP + jSLE from INP; plus the comparison of age, gender and hemoglobin in subjects with HSP versus subjects with HSP + jSLE both from INP

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