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Table 1 Demographic characteristics of all patients at the onset of MAS. (n = 55)

From: Single center clinical analysis of macrophage activation syndrome complicating juvenile rheumatic diseases

Characteristics

sJIA (n = 34)

KD (n = 10)

SLE(n = 11)

Female, n (%)

21(62.8)

7(70.0)

8(80.0)

Age at onset of underlying disease(y), median (IQR)

5.8(2.6–10.9) †

1.3(0.4–4.8) *

11.1(9.8–12.3) ‡

Age at onset of MAS(y), median (IQR)

6.9(3.4–10.9) †

1.3(0.4–4.8) *

11.1(9.8–14.8) ‡

MAS onset during first diagnosed underlying disease, n(%)

28(82.4)

10(100)

7(63.6)

  1. sJIA systemic juvenile idiopathic arthritis, KD Kawasaki disease, SLE systemic lupus erythematosus, MAS macrophage activation syndrome, IQR interquartile range.*P < 0.05 compared to sJIA group, †P < 0.05 compared to SLE group, ‡P < 0.001 compared to KD group