Table 1.
The characteristics of patients. The quantitative variable (age) was shown as mean ± SD (range). The qualitative variables were shown as number (percentage).
| MAS (n = 17) | Control (n = 53) | |
|---|---|---|
| Age | ||
| Mean ± SD (range) | 7.44 ± 4.4 (1–17) | 6.6 ± 3.93 (1–17) |
| Gender | ||
| Male | 10 (58.8%) | 38 (71.7%) |
| Female | 7 (41.2%) | 15 (28.3%) |
| Diagnosis | ||
| SJIA | 10 (58.8%) | 31 (58.3%) |
| PJIA | 4 (23.5%) | 12 (22.6%) |
| Kawasaki | 2 (11.8%) | 6 (11.3%) |
| SLE | 1 (5.9%) | 4 (7.5%) |
| Presentation | ||
| First presentation | 9 (52.9%) | 31 (58.5%) |
| On background illness | 8 (47.1%) | 22 (41.5%) |
MAS: Macrophage Activation Syndrome, SD: standard deviation, SJIA: systemic onset juvenile idiopathic arthritis, PJIA: polyarticular juvenile idiopathic arthritis, and SLE: systemic lupus erythematosus.