Table 2.

Estimated incubation period by sex, age groups, clinical severity, and 2 geographical regions of the Delta cases.

Characteristics			Mean (days)		Median (days)		The lower bound of 95% CrI		The upper bound of 95% CrI
Overall (n=353)			6.64		6.63		6.27		7.00
Sex
	Male (n=133)	7.10		7.09		6.52		7.71
	Female (n=220)	6.36		6.36		5.89		6.83
Age group
	0-18 years (n=47)	6.45		6.42		5.40		7.65
	19-39 years (n=84)	6.20		6.19		5.59		6.89
	40-59 years (n=132)	6.85		6.85		6.17		7.55
	60-79 years (n=83)	7.02		7.02		6.34		7.76
	≥80 years (n=7)	6.05		5.96		4.50		8.07
Clinical severity
	Mild cases (n=84)	6.41		6.41		5.67		7.19
	Moderate cases (n=238)	6.78		6.78		6.34		7.25
	Severe cases (n=21)	6.63		6.58		5.10		8.47
	Critical cases (n=10)	5.73		5.66		3.83		8.11
Geographical region
	Yangzhou (n=192)	6.72		6.72		6.23		7.23
	Nanjing (n=161)	6.51		6.51		5.99		7.07