Characteristic COVID-19 MIS-C
Mild, N = 2531 Moderate, N = 841 (Very) severe, N = 251 p-value2 Mild, N = 801 Moderate, N = 241 (Very) severe, N = 701 p-value2

Age

 0.3 (0.1 - 3.4) 1.5 (0.4 - 11.5) 6.5 (0.2 - 13.7) <0.001 8.2 (5.1 - 11.5) 7.9 (6.3 - 13.6) 11.2 (8.8 - 13.4) <0.001

Gender

 0.4 0.3

Male

 135 (54%) 43 (53%) 10 (40%) 44 (56%) 15 (65%) 48 (69%)

Female

 115 (46%) 38 (47%) 15 (60%) 35 (44%) 8 (35%) 22 (31%)

BMI (z-score) 3

 -0.13 (-1.28 - 0.97) 0.23 (-0.82 - 1.29) -0.97 (-2.22 - 1.21) 0.2 0.11 (-0.82 - 0.83) -0.15 (-1.14 - 1.40) 0.40 (-0.59 - 1.42) 0.4

Hospital Admission

 203 (82%) 77 (99%) 22 (96%) <0.001 73 (96%) 23 (100%) 70 (100%) 0.2

Length of Stay (d)

 1 (1 - 2) 4 (3 - 7) 19 (8 - 38) <0.001 5.00 (4.00 - 7.00) 4.00 (2.50 - 7.00) 6.00 (4.00 - 8.00) 0.057

ICU admission

 2 (1.0%) 1 (1.3%) 21 (95%) <0.001 0 (0%) 23 (100%) 70 (100%) <0.001

Length of Stay ICU (d)

 4 (4 - 5) 3 (3 - 3) 8 (4 - 34) 0.2 — 2.0 (2.0 - 3.0) 4.0 (3.0 - 5.0) <0.001

Lymphocyte count available

 0.068 0.11

Yes

 124 (49%) 39 (46%) 18 (72%) 74 (92%) 19 (79%) 58 (83%)

No

 129 (51%) 45 (54%) 7 (28%) 6 (7.5%) 5 (21%) 12 (17%)

Lymphopenia

 72 (58%) 22 (56%) 11 (61%) >0.9 46 (62%) 9 (47%) 46 (79%) 0.018
3. Roede MJ & van Wieringen JC, bewerking TNO (1985) Growth diagrams 1980: Netherlands third nation-wide survey. Tijdschrift voor Sociale Gezondheidszorg, 63, 1-34.
1 Median (IQR); n (%)
2 Kruskal-Wallis rank sum test; Pearson's Chi-squared test