Table 1.
Key descriptive statistics across clusters as at 15 May 2020.
| Metric | Cluster 1 (12) | Cluster 2 (20) | Cluster 3 (4) | Cluster 4 (51) | Cluster 5 (14) | |
|---|---|---|---|---|---|---|
| Peak | Duration (days) | 9.9 (2.14) | 6.6 (1.38) | 6 (1.52) | 4.4 (0.56) | 3.7 (1.12) |
| Days from outbreak | 14.7 (5.10)/45.7 (8.62) | 21.8 (9.21) | 30.3 (3.08) | 25.5 (5.80) | 18.1 (6.07) | |
| Mean | 2.3 (0.20) | 2.7 (0.30) | 2.9 (0.30) | 2.6 (0.22) | 4.8 (1.36) | |
| SD | 1.4 (0.14) | 2.5 (0.49) | 2.8 (0.66) | 3.1 (0.75) | 12.7 (4.06) | |
| Policy | Gap (days) | 13.1 (3.97) | 7.1 (2.04) | 8.7 (5.75) | 7.8 (1.93) | 9.9 (2.59) |
| Volume (number) | 6.8 (0.50) | 7.3 (0.62) | 5.8 (2.63) | 7.1 (0.34) | 7.1 (0.45) | |
| Timing (days from onset) | 41.8 (3.78) | 12.9 (2.39) | 34.5 (8.96) | 11.2 (2.78) | 7.9 (1.20) | |
| Reported Statistics | Tests/’000 | 21.5 (8.95) | 19.1 (10.93) | 35.7 (13.1) | 10.5 (6.5) | 10.2 (7.21) |
| Reported deaths/’000 | 0.13 (0.10) | 0.08 (0.06) | 0.56 (0.17) | 0.01 (0.001) | 0.13 (0.17) | |
| Reported infections/’000 | 1.5 (0.80) | 1.7 (1.11) | 4.1 (1.00) | 0.9 (0.49) | 2.1 (2.61) | |
| Death/Infection | 0.06 (0.03) | 0.04 (0.01) | 0.14 (0.02) | 0.03 (0.001) | 0.05 (0.02) |
This table displays selected descriptive statistics from 101 selected countries at the beginning of the pandemic up to 15 May 2020. The first section (as indicated by the solid horizontal lines) records the pattern of estimated daily reproduction number. Only cluster 1 is characterized by countries having two peaks of similar levels in their daily reproduction numbers. The second section summarizes the pattern of 8 social distancing policies. The last section records the average number of observed tests, reported deaths, reported infections per thousand population and reported deaths per infection. We averaged these values across countries in each cluster and recorded their sample standard error times the 95% confidence level value in brackets. For a detailed description of each examined policy the reader is referred to the supplementary materia S1l.