Table 1.

Main characteristics of population including age (median [IQR]), sex (%), lymphocyte subsets, and KL‐6 concentrations at the hospital admission

Parameters	Severe cases (n = 12)	Nonsevere cases (n = 10)	P‐value
Age (median [IQR])	62 [60‐68]	64 [51‐64]	.5761
Sex, M/F	9/3	6/4	.6517
Lymphocyte subsets (median [IQR])
CD45, cells/µL	792 [548‐1156]	1039 [655‐1612]	.2268
CD3%	73 [65‐81]	72 [69‐73]	.6504
CD3, cells/µL	495 [406‐789]	794 [569‐1014]	.1956
CD4%	45 [37‐54]	40 [39‐43]	.2894
CD4, cells/µL	356 [232‐533]	458 [342‐551]	.4695
CD8%	21 [15‐33]	29 [25‐33]	.4320
CD8, cells/µL	136 [89‐307]	333 [217‐432]	.1422
CD19%	12 [9‐21]	15 [12‐18]	.5358
CD19, cells/µL	109 [58‐139]	135 [113‐226]	.1883
NK cells %	10 [6‐13]	14 [9‐15]	.1148
NK, cells/µL	74 [32‐101]	141 [88‐205]	.0449
CD4/CD8	2.3 [1.1‐3.4]	1.5 [1.2‐1.8]	.3402
KL‐6, U/mL	1021 [473‐1909]	293 [197‐362]	.0118

Abbreviation: IQR, interquartile range.