Table 1

Study size and extracted data for the lognormal mu and sigma parameters from the nine studies that were used for meta-analysis

Author	n	Publication status 1 July 2020	Location	Observation period	Mean (Median) (days)	97.5th (95th) percentile (days)	Lognormal parameters used in meta-analysis
Author	n	Publication status 1 July 2020	Location	Observation period	Mean (Median) (days)	97.5th (95th) percentile (days)	Mu	SE	Sigma	SE
Backer et al34	88	PR	Chinese and international—travellers from Wuhan	20–28 January	6.4	11.1	1.796	0.077	0.349	0.045
Lauer et al27	181	PR	Chinese and international - travellers from known affected areas	4 January to 24 February	5.5	11.5	1.621	0.064	0.418	0.069
Li et al28	10	PR	Early cases in Wuhan	1 December to 31 January	5.2	12.5**	1.425	0.240	0.669	0.141
Bi et al26	183	PR	Shenzhen—travellers from Wuhan	14 January to 12 February	4.8*	14.0	1.570	0.245	0.650	0.167
Jiang et al32	40	PP	Location unclear	14 December to 8 February	4.9	9.7**	1.530	0.066	0.464	0.046
Linton et al29	158	PR	Cases external to Wuhan	Start of epidemic until 31 January	5.6	10.8**	1.611	0.070	0.472	0.048
Zhang et al31	49	PR	China—provinces other than Hubei	Start of epidemic until 27 February	5.2	10.5**	1.540	0.092	0.470	0.072
Ma et al30	587	PP	Multiple countries including China	Not specified	7.4	17	1.857	0.024	0.547	0.023
Leung35	61†	PR	China—provinces other than Hubei	10 January to 12 February	7.2	14.6	1.780	0.353	0.680	0.248