Table 4.
Multivariable analysis of weather factors (14-day exponential moving average) and reported cases of COVID-19 caused by the B.1.617.2 (delta) variant of SARS-CoV-2, Sydney, Australia from 16 June to 10 September, 2021
| Model | Factor | Estimate (95% CI) | Likelihood ratio | P-value |
|---|---|---|---|---|
| 1 | Intercept | 16.37 (14.31, 18.44) | 15.52 | < 0.001 |
| 9:00 am humidity | − 0.15 (− 0.18, − 0.12) | − 10.49 | < 0.001 | |
| 2 | Intercept | − 2.74 (− 4.76, − 0.73) | − 2.66 | 0.008 |
| 9:00 am temperature | 0.68 (0.52, 0.85) | 8.00 | < 0.001 | |
| 3 | Intercept | 10.24 (5.03, 15.45) | 3.86 | < 0.001 |
| 9:00 am humidity | − 0.11 (− 0.15, − 0.07) | − 5.30 | < 0.001 | |
| 9:00 am temperature | 0.25 (0.03, 0.47) | 2.21 | 0.027 | |
| 4 | Intercept | − 34.29 (− 51.80, − 16.78) | − 3.84 | < 0.001 |
| 9:00 am humidity | 0.52 (0.27, 0.76) | 4.20 | < 0.001 | |
| 9:00 am temperature | 4.23 (2.76, 5.70) | 5.65 | < 0.001 | |
| 9:00 am humidity × 9:00 am temperature | − 0.06 (− 0.08, − 0.04) | − 5.34 | < 0.001 |
CI confidence interval