Table 1 Descriptions of the included studies conducted on the average estimate of serial interval of COVID-19, 2020
From: Serial interval and incubation period of COVID-19: a systematic review and meta-analysis
No. | First author | Country | Study period | Sample size (in pairs) | Mean in days | Standard deviation | 95%CI for mean |
|---|---|---|---|---|---|---|---|
1. | Aghaali et al | Iran | February 20,2020 | 37 | 4.55 | 3.3 | NR |
2. | Ali et al | China | January 9 to February 13, 2020 | 677 | 5.1 | 5.3 | 4.7–5.5 |
3. | Bi et al | China | Jan 14 to February 12, 2020 | 48 | 6·3 | 4.2 | 5.2–7·6 |
4. | Bui et al | Vietnam | January 29 to March 24,2020 | 9 | 5.8 | 3.6 | NR |
5 | Cereda et al. | Italy | March 82,020 | 90 | 6.6 | 28 | 0.7–19 |
6. | Chan et al | China | January 23 to April 6, 2020 | 47 | 6.5 | 4.7 | NR |
7. | Cheng et al | Taiwan | January 15 to February 26,2020 | 12 | 7.0 | 5.8 | 3.7–13.2 |
8. | Du et al | China | January 20 to February 19, 2020 | 339 | 5.3 | 5.3 | 4.7–5.9 |
9. | He et al | China | January 21 to March 6, 2020 | 77 | 5.8 | 4.5 | 4.8–6.8 |
10. | Li et al | China | January 21, 2020, to February 29, 2020. | 337 | 5.8 | 3.9 | 5:4–6:2 |
11. | Li et al | China | January 22, 2020 | 6 | 7.5 | 3.4 | 5.3–19 |
12. | Liu et al | China | January 1, to March 12, 2020 | 116 | 5.8 | 3.2 | |
13. | Najafi et al | Iran | February 22 to March 29, 2020 | 21 | 5.7 | 3.9 | NR |
14. | Nishiuraa et al | Japan | February 12, 2020 | 28 | 4.7 | 2.9 | 3.7–6.0 |
15. | Kowk et al | China | February 13,2020 | 26 | 4.6 | 3.3 | 3.4–5.9 |
16. | Tindale et al | Singapore | January 19 to February 26,2020 | 93 | 4.6 | 0.9 | 2.7–6.4 |
17. | Tindale et al | Tianjin | January 21 to February 27,2020 | 135 | 4.2 | 4.0 | 3.4–5.0 |
18. | Viego et al | Argentina | March 20 to May 8, 2020 | 13 | 5.5 | 5.0 | 2.8–8.1. |
19. | Xu et al | China | January 15 to February 29, 2020 | 1407 | 5.2 | 5.3 | 4.6, 5.8 |
20. | Yang et al | China | January 20, 2020 | 152 | 4.6 | 4.4 | 3.7–5.5 |
21. | You et al | China | March 31, 2020 | 198 | 4.6 | 5.5 | NR |
22. | Zhang et al | China | after Jan. 20, 2020 | 35 | 5.1 | 3.4 | 1·3–11·6 |
23. | Zhao et al | China | February 15,2020 | 21 | 4.4 | 3 | 2.9–6.7 |