Characteristic N Patient characteristics by clinical syndrome p-value2
Overall, N = 2271 COVID-19 with respiratory symptoms, N = 981 Non-specific signs and symptoms attributed to COVID-19, N = 451 MIS-C, N = 631 Screening and/or symptoms not attributed to COVID-19, N = 211

Age

224 5.9 (0.2 - 12.7) 1.6 (0.1 - 12.4) 0.2 (0.1 - 10.0) 11.2 (7.7 - 13.8) 5.5 (0.2 - 11.3) <0.001

Gender

225 0.8

Male

135 (60%) 60 (61%) 28 (64%) 36 (58%) 11 (52%)

Female

90 (40%) 38 (39%) 16 (36%) 26 (42%) 10 (48%)

BMI (z-score) 3

132 0.19 (-0.80 - 1.14) 0.03 (-0.78 - 1.04) 0.29 (-0.75 - 1.36) 0.36 (-0.80 - 1.69) 0.16 (-0.50 - 0.52) 0.9

Hospital Admission

226 196 (87%) 78 (80%) 39 (87%) 62 (100%) 17 (81%) 0.002

Length of Stay (d)

193 4 (1 - 8) 3 (1 - 5) 2 (1 - 5) 7 (5 - 8) 4 (2 - 11) <0.001

ICU admission

195 45 (23%) 8 (10%) 1 (2.6%) 34 (55%) 2 (12%) <0.001

Length of Stay ICU (d)

45 4 (3 - 6) 7 (5 - 17) 3 (3 - 3) 4 (2 - 6) 24 (13 - 36) 0.13

Lymphocyte count available

227 <0.001

Yes

144 (63%) 54 (55%) 26 (58%) 54 (86%) 10 (48%)

No

83 (37%) 44 (45%) 19 (42%) 9 (14%) 11 (52%)

Lymphopenia

144 82 (57%) 26 (48%) 18 (69%) 33 (61%) 5 (50%) 0.3
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