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Onset of influenza A and B and its association with mean values and declines in temperature (per 1°C) and humidity (0.5 g/m 3 )
| Parameter | Temperature (°C) OR (95% CI) | Absolute humidity (g/m 3 ) OR (95% CI) |
|---|---|---|
| Mean |
1.10 (1.02 to 1.19) |
1.25 (1.05 to 1.49) |
| Max decline* | 1.11 (1.03 to 1.20) | 1.58 (1.28 to 1.96) |
The odds ratios (95% confidence interval) were calculated per 1°C temperature and per 0.5 g /m3 absolute humidity decreases.
*adjusted for the initial level before the decline.
