Table 2. RNA detection in the enrolled patients with COVID-19.

Duration of RNA detection	Mild (n=30)				Moderate (n=212)
	RP (n=11)	NRP (n=19)	P value		RP (n=27)	NRP (n=185)	P value
*Days since the onset of illness to
last RNA negative-conversion	17 [11–22]	15 [8–24]	0.71		18 [9–30]	20 [5–47]	0.17
Follow-up deadline (March 10)	40 [33–47]	42 [35–49]	0.15		45 [33–54]	46 [30–72]	0.15
Discharge	15 [14–22]	16 [10–23]	0.72		17 [9–29]	18 [7–35]	0.47
Days of RNA negative-conversion since the onset of illness (n, %)
Between 7 and 14 days	3 (27.3)	8 (42.1)	0.08		6 (22.2)	18 (9.7)	0.03
Between 14 and 21 days	7 (63.6)	8 (42.1)	0.04		11 (40.7)	84 (45.4)	0.61
More than 21days	1 (9.1)	3 (15.8)	0.18		10 (37.3)	83 (44.9)	0.40

*, median [range]. RP, re-detectable positive patients; NRP, non-re-detectable positive patients