Table 2.
Negative binomial regression model to analyse marginal effect of meteorological conditions on HRSV cases/1000 persons per sentinel in Japan
| Variables | Coeff.* | (95% CI) | P |
|---|---|---|---|
| Meteorological condition [combinations of T (°C) and H (%)] | |||
| T < 23·3 and H < 69 | Reference | ||
| T < 23·3 and 69 ⩽ H < 73 | 0·03 | (−0·16 to 0·22) | 0·784 |
| T < 23·3 and 73 ⩽ H < 79 | 0·03 | (−0·16 to 0·21) | 0·787 |
| T < 23·3 and 79 ⩽ H | −0·08 | (−0·25 to 0·10) | 0·395 |
| 23·3 ⩽ T < 26·0 and H < 69 | −0·11 | (−0·35 to 0·13) | 0·36 |
| 23·3 ⩽ T < 26·0 and 69 ⩽ H < 73 | −0·04 | (−0·25 to 0·16) | 0·684 |
| 23·3 ⩽ T < 26·0 and 73 ⩽ H < 79 | 0·03 | (−0·15 to 0·21) | 0·739 |
| 23·3 ⩽ T < 26·0 and 79 ⩽ H | −0·11 | (−0·27 to 0·06) | 0·212 |
| 26·0 ⩽ T < 28·2 and H < 69 | 0·37 | (0·16 to 0·57) | <0·001 |
| 26·0 ⩽ T < 28·2 and 69 ⩽ H < 73 | 0·23 | (0·04 to 0·41) | 0·016 |
| 26·0 ⩽ T < 28·2 and 73 ⩽ H < 79 | 0·26 | (0·08 to 0·44) | 0·005 |
| 26·0 ⩽ T < 28·2 and 79 ⩽ H | 0·80 | (0·61 to 0·99) | <0·001 |
| T ⩾ 28·2 and H < 69 | 0·43 | (0·26 to 0·59) | <0·001 |
| T ⩾ 28·2 and 69 ⩽ H < 73 | 0·72 | (0·54 to 0·89) | <0·001 |
| T ⩾ 28·2 and 73 ⩽ H < 79 | 1·15 | (0·94 to 1·35) | <0·001 |
| T ⩾ 28·2 and 79 ⩽ H | 1·92 | (1·60 to 2·23) | <0·001 |
| Year | |||
| 2007 | Reference | ||
| 2008 | 0·27 | (0·15 to 0·38) | <0·001 |
| 2009 | 0·14 | (0·03 to 0·25) | 0·017 |
| 2010 | −0·08 | (-0·19 to 0·04) | 0·196 |
| 2011 | 0·97 | (0·85 to 1·09) | <0·001 |
| 2012 | 1·10 | (0·99 to 1·22) | <0·001 |
| 2013 | 1·36 | (1·25 to 1·48) | <0·001 |
CI, Confidence interval; T, temperature; H, relative humidity.
* Coefficient of the variables.