Table 2 Daily percentage change (DPC) and average daily percentage change (ADPC) in the new cases of COVID-19 during the study period (19/3/2020–31/12/2022)
Vaccination phase | Segment | Lower endpoint | Upper endpoint | DPC/ADPC | 95% confidence limits | P-Value* | |
|---|---|---|---|---|---|---|---|
Lower | Upper | ||||||
Pre-vaccination period (19/3/2020–15/1/2021) | 1 | 1 (19/3/2020) | 50 (7/5/2020) | 6.4 | 4.7 | 8.3 | < 0.001 |
2 | 50 (7/5/2020) | 133 (29/7/2020) | 3.3 | 3.1 | 3.4 | < 0.001 | |
3 | 133 (29/7/2020) | 182 (16/9/2020) | 1.3 | 1.1 | 1.5 | < 0.001 | |
4 | 182 (16/9/2020) | 303 (15/1/2021) | − 1.4 | − 1.4 | − 1.3 | < 0.001 | |
Overall (ADPC) | 1 (19/3/2020) | 303 (15/1/2021) | 1.6 | 1.3 | 1.8 | < 0.001 | |
Vaccination period (16/1/2021–31/12/2022) | 1 | 304 (16/1/2021) | 407 (29/4/2021) | 4.6 | 4.2 | 4.9 | < 0.001 |
2 | 407 (29/4/2021) | 643 (21/12/2021) | − 2.0 | − 2.0 | − 1.9 | < 0.001 | |
3 | 643 (21/12/2021) | 665 (12/1/2022) | 21.6 | 15.1 | 28.4 | < 0.001 | |
4 | 665 (12/1/2022) | 1018 (31/12/2022) | − 1.6 | − 1.7 | − 1.5 | < 0.001 | |
Overall (ADPC) | 304 (16/1/2021) | 1018 (31/12/2022) | − 0.22 | − 0.40 | − 0.04 | < 0.001 | |