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 | |||
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 |
*Median, **95th percentile
†Inferred from data reported.
PP, preprint, not peer reviewed; PR, published, peer reviewed.