Table 3.
Separate and cumulative effects of meteorological factors on the weekly hand, foot, and mouth disease incidence and the corresponding variable values in Xi’an city, northwestern China, 2009–2018
| Variable | Separate effect | Cumulative effect | ||||
|---|---|---|---|---|---|---|
| Maximum RR (95% CI) | Variable value | Lag time (weeks) | Maximum RR (95% CI) | Variable value | Lag time (weeks) | |
| Temperature (°C) | 1.56 (1.35–1.81) | 31.1 | 0 | 2.27 (1.59–3.23) | 31.1 | 2 | 
| Precipitation (mm) | 1.16 (1.11–1.70) | 30.0 | 0 | 2.03 (1.73–2.37) | 24.9 | 7 | 
| Evaporation (mm) | 1.40 (1.05–1.88) | 57.9 | 0 | 2.40 (1.66–3.46) | 41.7 | 5 | 
RR = relative risk.