Efficacy and Safety of Lianhuaqingwen Capsules for the Prevention of Coronavirus Disease 2019: A Prospective Open-Label Controlled Trial

Table 4

Comparison of positive rates of subjects with different close contact statuses.

Contact status	Positive rate	N = 1976		value
		LH group	Control group
Close contact	N	31	35	0.6762
	Positive, N (%)	2 (6.45)	4 (11.43)
Secondary close contact	N	1070	840	0.0485
	Positive, N (%)	1 (0.09)	6 (0.71)