Table 4.

Comparison of nucleic acid negative conversion in 173 patients with new crown (GraphPad Prism software, t test)

Group	n	Nucleic acid negative coversion time (d)	P value
A	47	23 (13-48)	0.1979Δ
B	45	22 (5-42)
C	25	38 (13-50)	0.2589ΔΔ
D	56	37 (25-67)
A+B	92	23 (5-48)	< 0.0001ΔΔΔ
C+D	81	37 (13-67)
A+C	72	26 (13-50)	0.0704ΔΔΔΔ
B+D	101	31 (5-67)

^Δ P value of group A compared with group B;

^ΔΔ P value of group C compared with group D;

^ΔΔΔ P value of group A+B compared with group C+D;

^ΔΔΔΔ P value of group A+C compared with group B+D.