Characteristic COVID-19 MIS-C
Mild, N = 2821 Moderate, N = 961 (Very) severe, N = 291 p-value2 Mild, N = 881 Moderate, N = 241 (Very) severe, N = 731 p-value2

Age

 0.2 (0.1 - 2.9) 1.4 (0.3 - 10.7) 4.0 (0.2 - 13.4) <0.001 8.3 (5.3 - 11.5) 7.9 (6.3 - 13.6) 11.2 (8.9 - 13.8) <0.001

Gender

 0.3 0.3
    

Male

 150 (54%) 48 (52%) 11 (38%) 50 (57%) 16 (67%) 50 (68%)
    

Female

 130 (46%) 44 (48%) 18 (62%) 38 (43%) 8 (33%) 23 (32%)

BMI (z-score) 3

 -0.13 (-1.26 - 0.81) 0.22 (-0.71 - 1.18) -1.55 (-2.33 - 1.09) 0.12 0.03 (-0.80 - 0.80) -0.07 (-1.04 - 1.12) 0.17 (-0.77 - 1.23) 0.7

Hospital Admission

 229 (82%) 88 (98%) 28 (97%) <0.001 83 (97%) 24 (100%) 73 (100%) 0.2

Length of Stay (d)

 1 (1 - 2) 4 (3 - 6) 22 (8 - 42) <0.001 5.00 (4.00 - 7.00) 4.00 (2.75 - 6.25) 6.00 (4.00 - 8.00) 0.034

ICU admission

 2 (0.9%) 1 (1.2%) 28 (100%) <0.001 0 (0%) 24 (100%) 73 (100%) <0.001

Length of Stay ICU (d)

 4 (4 - 5) 3 (3 - 3) 10 (4 - 30) 0.2 — 2.0 (2.0 - 3.0) 4.0 (3.0 - 5.0) <0.001

Lymphocyte count available

 0.008 0.2
    

Yes

 135 (48%) 42 (44%) 22 (76%) 83 (94%) 20 (83%) 65 (89%)
    

No

 147 (52%) 54 (56%) 7 (24%) 5 (5.7%) 4 (17%) 8 (11%)

Lymphopenia

 77 (57%) 22 (52%) 14 (64%) 0.7 51 (61%) 10 (50%) 50 (77%) 0.039
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