Table 2
The estimation of key transmission characteristics across different demographic regions.
| Demographic region | Italy | UK | USA | Spain | South Korea | |
|---|---|---|---|---|---|---|
 |
95% CI | 1.31–2.96 | 1.91–4.76 | 1.29–6.88 | 1.74–3.35 | 2.12–3.15 |
| Mean value | 2.04 | 2.96 | 3.28 | 2.30 | 2.52 | |
| Median | 1.92 | 2.75 | 2.95 | 2.19 | 2.48 | |
| Mean latent period | 95% CI | 5.10–13.80 | 4.10–16.50 | 3.36–13.82 | 4.09–8.50 | 3.02–4.33 |
| Mean value | 9.04 | 8.49 | 7.14 | 5.79 | 3.88 | |
| Median | 8.64 | 7.66 | 6.69 | 5.67 | 3.95 | |
| Inflection point | 95% CI | Apr.9 – Apr.19 | Apr.12 - Apr.29 | Jul.24 - Feb.6,2021 | Apr.7 – May.5 | Mar.10 – Mar.18 |
| Real date | Apr.19 | – | – | Apr.23 | Mar.15 | |
| maximal Iq + χ Aq | 95% CI | 0.99–1.22 | 0.64–1.16 | 17.72–33.75 | 0.89–1.16 | 0.078-0.093 |
| (×105) | Real data | 1.08257 | – | – | 1.01617 | 0.07577 |
| Demographic region | Iran | France | Germany | Japan | Chinese mainland | |
 |
95% CI | 1.07–3.63 | 1.29–2.68 | 1.77–3.10 | 1.59–5.16 | 1.70–2.63 |
| Mean value | 2.07 | 1.74 | 2.30 | 2.44 | 2.08 | |
| Median | 1.98 | 1.65 | 2.25 | 2.14 | 2.05 | |
| Mean latent period | 95% CI | 4.60–8.27 | 4.14–9.85 | 3.45–10.11 | 3.43–4.89 | 2.79–4.03 |
| Mean value | 6.63 | 6.14 | 5.96 | 4.49 | 3.54 | |
| Median | 6.73 | 5.81 | 5.68 | 4.61 | 3.59 | |
| Inflection point | 95% CI | Mar.28 – Apr.10 | Apr.9 – Jun.14 | Apr.1 – Apr.12 | Apr.24 – May.7 | Feb.14 – Feb.19 |
| Real date | Apr.5 | Apr.21 | Apr.6 | Apr.27 | Feb.17 | |
| maximal Iq + χ Aq | 95% CI | 0.21–0.54 | 0.58–1.13 | 0.61–0.81 | 0.07–0.15 | 0.49-0.65 |
| (×105) | Real data | 0.34887 | 0.91763 | 0.72864 | 0.11869 | 0.58016 |
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