Table 1.
Demographics and Cardiac Symptomology and Signs Among Patients With Classic Myocarditis, MIS‐C Myocarditis, and Vaccine‐Related Myocarditis
| Variable | Level | No. | Overall (N=201) | Classic myocarditis (n=43) | MIS‐C (n=149) | Vaccine‐related myocarditis (n=9) | P value |
|---|---|---|---|---|---|---|---|
| Age, y | 201 | 10.9 (7.1, 15.1) | 14.7 (9.0, 16.6) | 9.5 (6.9, 13.2) | 15.7 (14.5, 16.6) | <0.001 * | |
| Age group | 1: <1 y | 201 | 4 (2.0) | 1 (2.3) | 3 (2.0) | 0 (0) | <0.001 * |
| 2: 1–5 y | 36 (17.9) | 8 (18.6) | 28 (18.8) | 0 (0) | |||
| 3: 6–11 y | 73 (36.3) | 2 (4.7) | 71 (47.7) | 0 (0) | |||
| 4: ≥12 y | 88 (43.8) | 32 (74.4) | 47 (31.5) | 9 (100.0) | |||
| Sex | Female sex | 201 | 67 (33.3) | 12 (27.9) | 55 (36.9) | 0 (0) | 0.052 |
| Male sex | 134 (66.7) | 31 (72.1) | 94 (63.1) | 9 (100.0) | |||
| Race or ethnicity | Black race | 200 | 110 (55.0) | 23 (53.5) | 86 (58.1) | 1 (11.1) | 0.008 * |
| Asian race | 4 (2.0) | 1 (2.3) | 3 (2.0) | 0 (0) | |||
| Hispanic or Latino ethnicity | 36 (18.0) | 7 (16.3) | 29 (19.6) | 0 (0) | |||
| Other race or ethnicity | 11 (5.5) | 4 (9.3) | 5 (3.4) | 2 (22.2) | |||
| White race | 39 (19.5) | 8 (18.6) | 25 (16.9) | 6 (66.7) | |||
| Comorbidities | Asthma | 201 | 24 (11.9) | 6 (14.0) | 16 (10.7) | 2 (22.2) | 0.187 |
| Obesity | 25 (12.4) | 1 (2.3) | 23 (15.4) | 1 (11.1) | |||
| Both | 7 (3.5) | 0 (0) | 7 (4.7) | 0 (0) | |||
| None | 138 (68.7) | 35 (81.4) | 97 (65.1) | 6 (66.7) | |||
| Other | 7 (3.5) | 1 (2.3) | 6 (4.0) | 0 (0) | |||
| Chest pain | Yes | 200 | 57 (28.5) | 32 (76.2) | 16 (10.7) | 9 (100.0) | <0.001 * |
| Dyspnea | Yes | 201 | 49 (24.4) | 15 (34.9) | 30 (20.1) | 4 (44.4) | 0.050 * |
Data are provided as number, median (quartile 1, quartile 3), or number (percentage). MIS‐C indicates multisystem inflammatory syndrome in children.
*
Indicates significance at P < 0.05 level.