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Table 3 Overview of studies estimating incubation periods for SARS-CoV-2

From: The incubation period during the pandemic of COVID-19: a systematic review and meta-analysis

Study

n

Distribution

Mean (days)

95th percentile(days)

Estimate

95% CI

Estimate

95%CI

Li et al. [20]

10

Log normal

5.2

4.1–7.0

12.5

9.2–18

Zhang et al. [23]

49

Log normal

5·2

1.8–12.4

10.5

 

Linton et al. [29]

52€

Log normal*

5.0

5.6 ┼

4.2–6.0

4.4–7.4

10.6

12.3

8.5–14.1

9.1–19.8

Weibull

5.4

4.3–6.6

12.0

9.8–15.6

Gamma

5.3

4.3–6.6

11.3

9.2–14.5

158€ €

Log normal*

5.6

5.0–6.3

10.8

9.3–12.9

Weibull

5.8

5.2–6.5

11.0

9.6–12.9

Gamma

6.0

5.3–6.7

11.7

10.3–13.4

Backer et al. [55]

88

Weibull*

6.4

5.6–7.7

10.3

8.6–14.1

Gamma

6.5

5.6–7.9

11.3

9.1–15.7

Lauer et al. [56]

181

Log normal*

5.5

5.1 a

-

4.5–5.8

11.5b

8.2–15.6

Wang et al. [57]

483

Log normal*

7.4

2–20

-

-

Bi et al. [24]

183

Log normal

4.8a

4.2–5.4

14.0

12.2–15.9

Yu et al. [30]

132

Gamma

7.2a

6.4 -7.9

16.0

20.4 c

-

-

Yang et al. [26]

178

Weibull*

6 a

-

13.7

12.5–14.9

Wang et al. [47]

14

Log normal

4.5

3.0–6.4

11.4

4.0–12.0

Viego et al. [33]

12

Log normal

7.50

4.11–10.89

-

-

Tindale et al. [52]

93

Gamma

5.99

4.97–7.14

-

-

135

Gamma

8.68

7.72–9.7

-

-

Ryu et al. [34]

181

Log normal*

4.7 a

0.1–15.6

-

-

Qin et al(69)

1084

Weibull

8.29

7.67–8.90

16.32

15.62-17.04

Lee et al. [51]

47

Log normal*

3.0 a

0.6–8.2

-

-

Chun et al. [9]

74

Weibull

3.10 a

2.54–3.71

-

-

Gamma

2.99 a

2.44–3.60

-

-

Log normal*

2.87 a

2.33–3.50

-

-

Wieland [37]

107

-

-

-

5.6 b

-

  1. €Excluding Wuhan resident
  2. €€Including Wuhan resident
  3. *Best fit distribution to the data
  4. ┼Estimation with right truncation
  5. aMedian
  6. b97.5th percentile
  7. c99th percentile