Table 2. The RR values and 95% confidence intervals of C1 and C2 or C1, C2, C4, and C6 with lag time in eight studies countries.
| Locations | C12 | C1246 | ||||||
|---|---|---|---|---|---|---|---|---|
| Lag days | RR | 95% CI | Lag days | RR | 95% CI | Mean Lag days | Rank | |
| Australia | 7 | 0.945 | (0.906 to 0.987) | 21 | 0.976 | (0.968 to 0.984) | 14.0 | 5 |
| India | 19 | 0.994 | (0.992 to 0.996) | 16 | 0.994 | (0.992 to 0.996) | 17.5 | 1 |
| Israel | 16 | 0.583 | (0.530 to 0.641) | 13 | 0.981 | (0.970 to 0.992) | 14.5 | 4 |
| Japan | 12 | 0.976 | (0.965 to 0.988) | 7 | 0.911 | (0.848 to 0.978) | 9.5 | 7 |
| Singapore | 15 | 0.867 | (0.848 to 0.886) | 15 | 0.867 | (0.848 to 0.886) | 15 | 2 |
| South Korea | 10 | 0.770 | (0.675 to 0.878) | 11 | 0.916 | (0.873 to 0.961) | 10.5 | 6 |
| the United Kingdom | 19 | 0.916 | (0.884 to 0.950) | 11 | 0.973 | (0.957 to 0.989) | 15.0 | 2 |
| the United States | 7 | 0.955 | (0.932 to 0.979) | 7 | 0.955 | (0.932 to 0.979) | 7.0 | 8 |