Table. Mean Incubation Period of COVID-19 From Included Studies.
Author | Mean incubation period (95% CI) | Weight |
---|---|---|
Areekal et al,16 2021 | 4.22 (3.71-4.65) | 0.81 |
Backer et al,18.2020 | 6.4 (5.6-7.7) | 0.75 |
Backer et al,17 2022 | 3.2 (2.93-3.47) | 0.82 |
Bao et al,19 2020 | 5.4 (4.5-6.3) | 0.77 |
Brandal et al,20 2021 | 3.33 (3.17-3.49) | 0.82 |
Bui et al,21 2020 | 6.4 (4.89-8.5) | 0.64 |
Chen et al,22 2020 | 8 (4.97-11.03) | 0.46 |
Covid-Epidemiology Investigation Team,23 2021 | 8.75 (6.95-10.55) | 0.64 |
Dai et al,24 2020 | 6.5 (5.9-7.1) | 0.80 |
Del Águila-Mejía et al,26 2022 | 3.1 (2.82-3.38) | 0.82 |
Deng et al,27 2021 | 8 (6.62-9.38) | 0.71 |
Deng et al,28 2021 | 9.1 (7.86-9.66) | 0.77 |
Denis et al,29 2021 | 4 (3.93-4.07) | 0.82 |
Ding et al,30 2020 | 7.11 (5.24-8.98) | 0.63 |
Dong et al,31 2020 | 7.25 (5.86-8.64) | 0.70 |
Du et al,32 2020 | 5.28 (4.75-5.82) | 0.80 |
Gao et al,34 2020 | 11.67 (9.46-13.87) | 0.58 |
Gao et al,33 2020 | 7.33 (3.54-11.13) | 0.37 |
Grant et al,35 2022 | 5 (4.95-5.05) | 0.82 |
Guo et al,36 2020 | 9.33 (8.21-10.46) | 0.74 |
Han et al,37 2020 | 6.63 (4.28-8.97) | 0.56 |
Han et al,39 2020 | 7.67 (7.08-8.25) | 0.80 |
Han et al,38 2020 | 5.5 (4.5-6.5) | 0.76 |
Hong et al,40 2020 | 5.7 (4.95-6.45) | 0.78 |
Hua et al,41 2020 | 9.1 (7.99-10.21) | 0.74 |
Huang et al,43 2020 | 8 (7.57-8.43) | 0.81 |
Huang et al,42 2020 | 5.5 (5.08-5.92) | 0.81 |
Huang et al,44 2021 | 7.8 (7.4-8.5) | 0.80 |
Je et al,45 2021 | 4.7 (3.21-6.19) | 0.69 |
Jeong et al,46 2020 | 5 (4.38-5.62) | 0.79 |
Jiang et al,47 2020 | 6.73 (5.97-7.48) | 0.78 |
Jiang et al,48 2021 | 7.75 (7.1-7.99) | 0.81 |
Jin et al,49 2020 | 5.33 (4.81-5.86) | 0.80 |
Khonyongwa et al,50 2020 | 6 (5.5-7) | 0.78 |
Ki et al,51 2020 | 5.39 (4.7-6.05) | 0.79 |
Kim et al,52 2020 | 11.86 (7.59-16.13) | 0.32 |
Kong et al,53 2020 | 6.33 (3.14-9.53) | 0.44 |
Kong et al,55 2020 | 8.5 (7.8-9.2) | 0.79 |
Kong et al,54 2020 | 7.25 (7.04-7.46) | 0.82 |
Lai et al,56 2020 | 7.67 (7.02-8.31) | 0.79 |
Lau et al,57 2021 | 4.75 (4.14-5.56) | 0.79 |
Laval et al,25 2021 | 4.61 (3.2-6.02) | 0.70 |
Le et al,58 2020 | 7 (4.87-9.13) | 0.59 |
Lee et al,59 2021 | 4.6 (4.33-4.87) | 0.82 |
Lei et al,60 2020 | 7.57 (3.95-11.19) | 0.39 |
Leung et al,61 2020 | 1.8 (1.63-1.97) | 0.82 |
Li et al,63 2020 | 5.33 (4.82-5.85) | 0.80 |
Li et al,64 2022 | 6.5 (5.86-7.2) | 0.79 |
Li et al,62 2020 | 5.2 (4.1-7) | 0.70 |
Linton et al,65 2020 | 5.6 (5-6.3) | 0.79 |
Liu et al,66 2021 | 13.5 (10.93-16.07) | 0.52 |
Liu et al,68 2020 | 6.67 (5.38-7.95) | 0.72 |
Liu et al,69 2020 | 6.02 (4.74-7.3) | 0.72 |
Liu et al,70 2020 | 6 (4.83-7.17) | 0.73 |
Liu et al,71 2020 | 8.8 (7.33-10.27) | 0.69 |
Liu et al,72 2020 | 9 (7.79-10.21) | 0.73 |
Liu et al,74 2021 | 8.4 (7.32-9.48) | 0.75 |
Liu et al,67 2020 | 6.35 (6.28-6.42) | 0.82 |
Liu et al,73 2020 | 7.67 (6.42-8.91) | 0.72 |
Llaque-Quiroz et al,75 2020 | 8.67 (5.76-11.58) | 0.47 |
Mao et al,76 2020 | 10.3 (8.18-12.42) | 0.59 |
Moazzami et al,77 2021 | 1.91 (1.24-2.59) | 0.79 |
Ng et al,78 2021 | 5.5 (4.99-6.01) | 0.80 |
Nie et al,79 2020 | 5 (4.84-5.16) | 0.82 |
Ogata et al,80 2022 | 3.7 (3.4-4) | 0.81 |
Pak et al,81 2020 | 6.6 (5.4-7.8) | 0.73 |
Pan et al,82 2020 | 6.11 (4.55-7.67) | 0.68 |
Patrikar et al,83 2020 | 6.93 (6.11-7.75) | 0.78 |
Paul et al,84 2021 | 6.74 (6.35-7.13) | 0.81 |
Ping et al,85 2021 | 6.48 (5.58-7.38) | 0.77 |
Pongpirul et al,86 2020 | 5.5 (4.69-6.31) | 0.78 |
Pung et al,87 2020 | 4.33 (3.25-5.41) | 0.75 |
Qi et al,88 2020 | 3.67 (2.87-4.46) | 0.78 |
Qian et al,89 2020 | 5.67 (4.89-6.44) | 0.78 |
Qiu et al,90 2020 | 11.25 (10.06-12.44) | 0.73 |
Ratovoson et al,91 2021 | 4.1 (0.7-7.5) | 0.41 |
Ren et al,92 2020 | 5.3 (4.6-6) | 0.79 |
Samrah et al,93 2021 | 6.33 (5.51-7.15) | 0.78 |
Sanche et al,94 2020 | 4.2 (3.5-5.1) | 0.78 |
Shen et al,95 2020 | 7.17 (3.34-11) | 0.36 |
Shen et al,96 2020 | 7.57 (5.41-9.73) | 0.59 |
Shi et al,97 2020 | 6.13 (2.95-9.32) | 0.44 |
Shi et al,98 2020 | 4.77 (3.61-5.94) | 0.73 |
Shiel et al,99 2021 | 5.33 (4.6-6.07) | 0.78 |
Shu et al,100 2020 | 5.17 (2.75-7.59) | 0.55 |
Song et al,101 2020 | 5.01 (4.31-5.69) | 0.79 |
Song et al,102 2020 | 8.23 (6.73-9.73) | 0.69 |
Song et al,103 2020 | 10 (8.54-11.46) | 0.69 |
Su et al,104 2021 | 5.4 (4.42-6.38) | 0.76 |
Sugano et al,105 2020 | 6.8 (5.57-8.03) | 0.73 |
Sun et al,106 2021 | 6.5 (4.55-8.45) | 0.62 |
Sun et al,107 2020 | 5.4 (4.88-5.92) | 0.80 |
Sun et al,108 2020 | 8.1 (6.73-9.47) | 0.71 |
Sun et al,109 2021 | 5.33 (1.93-8.73) | 0.41 |
Sun et al,110 2020 | 13 (9.53-16.47) | 0.40 |
Tan et al,111 2020 | 5.54 (5.18-5.9) | 0.81 |
Tanaka et al,112 2022 | 2.87 (2.56-3.17) | 0.81 |
The SARS-CoV-2 variant with line,113 2021 | 4.5 (1.83-7.17) | 0.51 |
Tian et al,114 2020 | 6.7 (6.07-7.33) | 0.79 |
Tindale et al,115 2020 | 8.68 (7.72-9.7) | 0.76 |
Viego et al,116 2020 | 7.9 (4.6-11.1) | 0.43 |
Wang et al,158 2021 | 10.64 (8.08-13.2) | 0.52 |
Wang et al,117 2020 | 6.5 (5.86-7.14) | 0.79 |
Wang et al,118 2020 | 6.3 (6-6.6) | 0.81 |
Wang et al,119 2020 | 4.5 (3-6.4) | 0.66 |
Wang et al,120 2020 | 6 (5.47-6.53) | 0.80 |
Wei et al,123 2021 | 8.8 (6.77-10.83) | 0.61 |
Wei et al,122 2020 | 5.67 (5.14-6.19) | 0.80 |
Won et al,124 2021 | 5.53 (3.98-8.09) | 0.60 |
Wong et al,125 2020 | 5.5 (4.05-6.95) | 0.70 |
Wu et al,128 2021 | 8.75 (7.51-9.99) | 0.72 |
Wu et al,127 2020 | 7 (4.9-9.1) | 0.60 |
Wu et al,126 2020 | 7 (5.78-8.22) | 0.73 |
Wu et al,129 2020 | 6.05 (4.87-7.23) | 0.73 |
Xiao et al,131 2020 | 7.18 (5.84-8.52) | 0.71 |
Xiao et al,133 2021 | 8.58 (7-9) | 0.76 |
Xiao et al,132 2020 | 8.98 (7.98-9.9) | 0.76 |
Xiao et al,130 2020 | 9.25 (8.78-9.72) | 0.81 |
Xie et al,134 2020 | 18.87 (9.01-28.73) | 0.09 |
Xin et al,135 2020 | 6.9 (6.3-7.5) | 0.80 |
Xu et al,136 2020 | 11.67 (9.87-13.47) | 0.64 |
Xu et al,137 2020 | 4 (3.6-4.4) | 0.81 |
Yang et al,138 2020 | 8.75 (8.39-9.11) | 0.81 |
Yang et al,139 2021 | 6.67 (5.64-7.7) | 0.75 |
Yang et al,140 2020 | 4 (1.33-6.67) | 0.51 |
You et al,141 2020 | 8 (7.28-8.72) | 0.79 |
Yu et al,143 2022 | 16.6 (16.22-16.98) | 0.81 |
Yu et al,142 2020 | 6.8 (6.23-7.37) | 0.80 |
Zhang et al,146 2021 | 4.3 (2.73-5.87) | 0.68 |
Zhang et al,144 2020 | 5.2 (1.8-12.4) | 0.24 |
Zhang et al,145 2020 | 6.75 (4.27-9.23) | 0.54 |
Zhang et al,147 2021 | 4.67 (3.92-5.41) | 0.78 |
Zhang et al,148 2021 | 6.1 (5.73-6.47) | 0.81 |
Zhao et al,151 2021 | 6.8 (6.2-7.5) | 0.79 |
Zhao et al,152 2020 | 7 (5.43-8.57) | 0.68 |
Zhao et al,153 2021 | 6.5 (5.6-7.4) | 0.77 |
Zhao et al,150 2021 | 4 (3.52-4.48) | 0.80 |
Zhao et al,149 2020 | 6.67 (4.86-8.48) | 0.64 |
Zhong et al,154 2020 | 6.85 (5.74-7.96) | 0.74 |
Zhu et al,156 2021 | 3.33 (2.81-3.85) | 0.80 |
Zhu et al,155 2020 | 7.27 (6.76-7.78) | 0.80 |
Zhu et al,157 2021 | 11.6 (10.6-12.7) | 0.75 |
Overall a | 6.57 (6.26-6.88) | 100.00 |
I2 = 98.8%; P < .001.