Demographics and COVID exposures
| MIS-C+ (n=50) | MIS-C- (n=68) | P value | |
| Median (IQR) or n (%) | Median (IQR) or n (%) | ||
| Age (years) | 9.65 (6.22–14.0) | 3.15 (1.28–7.88) | <0.001 |
| Male | 33 (66) | 30 (44) | 0.025 |
| Race/Ethnicity | |||
| White | 15 (30) | 30 (44) | 0.23 |
| Black | 9 (18) | 8 (12) | |
| Other* | 12 (24) | 19 (28) | |
| Missing/declined to answer | 14 (28) | 11 (16) | |
| Hispanic/Latino | 11 (22) | 12 (18) | 0.64 |
| City/Neighbourhood COVID incidence (n=94)† | 0.0824 (0.059–0.109) | 0.0647 (0.049–0.097) | 0.059 |
| Known history of COVID infection | 20 (40) | 4 (6) | <0.001 |
| Known contact with COVID positive individual | 31 (62) | 10 (15) | <0.001 |
*Two patients selected two races and are included in this category.
†Reported only for Massachusetts residents. Incidence reported as cases per population.
MIS-C, multisystem inflammatory syndrome in children.