Table 2. Negative binomial regression model of meteorological factors associated with risk of HFMD incidence.
| β | S. E. | P | (eβ-1)*100 = percent increase (%) | 95% Confidence Interval for percent increase (%) | ||
|---|---|---|---|---|---|---|
| Lower boundary | Upper boundary | |||||
| (A) | ||||||
| (Intercept) | 83.59 | 0.44 | <0.01 | - | - | - |
| Relative humidity | 0.01 | 0.00 | <0.01 | 1.48 | 1.42 | 1.55 |
| Atmospheric pressure | -0.08 | 0.00 | <0.01 | -7.53 | -7.60 | -7.45 |
| Wind velocity | 0.02 | 0.00 | 0.01 | 2.18 | 2.11 | 2.24 |
| Year | 0.43 | 0.98 | <0.01 | 53.04 | 26.35 | 85.36 |
| (B) | ||||||
| (Intercept) | 1.01 | 0.03 | <0.01 | - | - | - |
| Relative humidity | 0.03 | 0.00 | <0.01 | 3.30 | 3.24 | 3.36 |
| Average temperature | 0.09 | 0.00 | <0.01 | 9.47 | 9.36 | 9.58 |
| Wind velocity | 0.04 | 0.00 | <0.01 | 4.57 | 4.50 | 4.64 |
| Year | 0.39 | 0.98 | <0.01 | 48.14 | 22.20 | 79.59 |
Negative binomial regression model for weekly HFMD incidence without average temperature (A) and without atmospheric pressure (B).