Table 1. Demographics and laboratory results of patients with coronavirus disease 2019.

Parameters	First-episode group (n = 71)	Relapsed group (n = 32)	P value
Age, yr	49 ± 18	44 ± 16	0.18
Total hospitalization period, day	34 ± 18	13 ± 7	< 0.01a
Sex, male	15 (21.1)	8 (25.0)	0.66
Pneumonia	35 (49.3)	7 (21.9)	0.01a
URI symptoms	33 (46.5)	5 (15.6)	< 0.01a
Diabetes	6 (8.5)	3 (9.4)	1.00
Hypertension	12 (16.9)	4 (12.5)	0.77
Hyperlipidemia	6 (8.5)	0 (0.0)	0.17
Procalcitonin, ng/mL	0.04 ± 0.03	0.03 ± 0.01	< 0.01a
White blood cell count, /μL	5,478 ± 1,631	4,853 ± 1,306	0.06
Red blood cell count, 106/μL	4.28 ± 4.88	4.29 ± 5.04	0.93
Hemoglobin, g/dL	12.67 ± 1.44	12.87 ± 1.41	0.51
Hematocrit, %	38.28 ± 3.76	38.93 ± 3.69	0.41
Platelet count, 103/μL	260.01 ± 96.02	227.59 ± 66.72	0.09
Neutrophil count, /μL	3,133 ± 1,137	2,621 ± 1,034	0.03a
Monocyte count, /μL	478 ± 161	387 ± 144	< 0.01a
Lymphocyte count, /μL	1,744 ± 803	1,695 ± 489	0.70
Eosinophil count, /μL	101 ± 99	125 ± 93	0.24
Basophil count, /μL	23 ± 17	24 ± 14	0.64
C-reactive protein, mg/dL	1.3 ± 2.5	0.2 ± 0.4	< 0.01a
Creatine phosphokinase, U/L	98 ± 86	61 ± 21	< 0.01a
Lactate dehydrogenase, U/L	457 ± 135	353 ± 82	< 0.01a
Sodium, mmol/L	141 ± 2	141 ± 1	0.08
Potassium, mmol/L	4.2 ± 0.5	4.3 ± 0.4	0.25
Chloride, mmol/L	101 ± 3	102 ± 2	0.11
Calcium, total, mg/dL	9.1 ± 0.5	9.2 ± 0.4	0.08
Inorganic phosphorus, mg/dL	3.1 ± 0.6	3.2 ± 0.5	0.87
Glucose, mg/dL	119 ± 80	100 ± 28	0.09
Blood urea nitrogen, mg/dL	13 ± 4	13 ± 3	0.59
Creatinine, mg/dL	0.72 ± 0.19	0.69 ± 0.14	0.49
Protein, total, g/dL	7.0 ± 0.4	7.1 ± 0.5	0.13
Albumin, g/dL	4.2 ± 0.4	4.3 ± 0.3	0.28
Bilirubin, total, mg/dL	0.51 ± 0.55	0.45 ± 0.21	0.58
Alkaline phosphatase, U/L	81 ± 48	63 ± 16	< 0.01a
Aspartate transaminase, U/L	28 ± 20	19 ± 7	< 0.01a
Alanine transaminase, U/L	28 ± 22	20 ± 14	0.02a

Data are presented as mean ± standard deviation or number (%).

^aStatistically significant by independent two-sample t-test or Pearson χ² test.