. 2021 May 15;13(5):4251–4265.

Table 2.

Comparison of initial laboratory examination, chest CT changes and nucleic acid negative conversion in 173 patients with new crown (GraphPad Prism software, t test)

Features	A (n = 47)	B (n = 45)	P value^Δ	C (n = 25)	D (n = 56)	P Value^ΔΔ
Time of complaint (d)	16 (7-20)	14 (3-20)	0.8439	34 (21-61)	32.5 (22-64)	0.2824
Nucleic acid negative conversion time (d)	23 (13-48)	22 (5-42)	0.1979	38 (13-50)	37 (25-67)	0.2589
IgM^* (IU/L)	59.015 (2.98-210.34)	51.6 (1.53-123.85)	0.0484	56.29 (6.13-212.57)	40.095 (0.69-1193.9)	0.7541
IgG^** (IU/L)	150.43 (1.4-224.52)	134.84 (0.84-211.17)	0.0470	156.07 (79.07-220.5)	176.465 (54.05-219.94)	0.5811
WBC *10⁹/L	5.3 (1.4-19)	5.4 (3.2-10.1)	0.6428	5.3 (3.48-10.3)	5.6 (3.4-11.3)	0.5749
Lymphocyte count *10⁹/L	1.09 (0.39-2.67)	1.52 (0.48-2.6)	< 0.0001	1.5 (0.36-2.53)	1.57 (0.77-3.66)	0.8585
Lymphocyte ratio (%)	21.9 (3.1-50.9)	28.65 (9.3-46.4)	0.0407	26.2 (9.6-35.9)	29.2 (4.6-56.1)	0.1800
CRP mg/L	14.39 (0.19-254.93)	3.28 (0.02-82.64)	0.0094	2.52 (0.21-98.15)	1.57 (0.09-28.03)	0.0886
IL-6 pg/mL^***	3.91 (0.03-104.5)	2.54 (< 1.5-139.6)	0.6786	4.41 (< 1.5-6.53)	2.23 (< 1.5-14.99)	0.7991
PCT ng/ml	0.05 (0.01-0.33)	0.03 (0.01-0.08)	0.1926	0.04 (0.01-0.1)	0.04 (0.01-0.1)	0.4771
Proportion of pulmonary infection (%)	12.6 (1.2-38)	11.3 (0.1-35)	0.6987	15.6 (4-38.5)	15.3 (0.1-43.2)	0.6953
Percentage of lung changes (%)^***	33.05 (5.5-100)	22.5 (1-100)	0.0386	52 (1.4-75)	50 (1-85)	0.5118

^Δ

P value of group A compared with group B;

^ΔΔ

P value of group C compared with group D;

IgM cases were n = 30 in group A, n = 45 in group B, n = 25 in group C, n = 56 in group D;

^**

IgG cases were n = 30 in group A, n = 45 in group B, n = 25 in group C, n = 56 in group D;

^***

IL-6 cases were n = 30 in group A, n = 45 in group B, n = 25 in group C, n = 56 in group D;

^***

percentage of pulmonary infection decreased or increased after 1 week interval.