From: The association between air pollution and preterm birth and low birth weight in Guangdong, China
The first month | The second month | The third month | The fourth month | The fifth month | The sixth month | The seventh month | The eighth month | The ninth month | The tenth month | |
---|---|---|---|---|---|---|---|---|---|---|
PM2.5 | ||||||||||
OR | 1.059a | 1.046 | 0.982 | 0.998 | 1.004 | 0.899 | 0.951 | 0.947 | 0.990 | 1.082a |
95% CI | 1.02~1.10 | 0.98~1.11 | 0.91~1.06 | 0.99~1.01 | 0.99~1.02 | 0.84~0.96 | 0.89~1.01 | 0.89~1.01 | 0.96~1.01 | 1.01~1.17 |
PM10 | ||||||||||
OR | 1.090a | 1.035 | 0.988 | 0.989 | 1.002 | 0.921 | 0.964 | 0.965 | 1.063a | 1.063a |
95% CI | 1.03~1.15 | 0.98~1.08 | 0.98~1.00 | 0.98~1.00 | 0.99~1.01 | 0.87~1.00 | 0.92~1.01 | 0.92~1.01 | 1.00~1.13 | 1.01~1.13 |
SO2 | ||||||||||
OR | 1.328a | 0.957 | 0.980 | 1.026 | 0.968 | 0.951a | 0.981 | 0.992 | 1.124 | 1.124 |
95% CI | 1.01~1.75 | 0.92~1.07 | 0.95~1.02 | 0.98~1.07 | 0.93~1.01 | 0.91~0.99 | 0.94~1.02 | 0.81~1.21 | 0.88~1.44 | 0.88~1.43 |
NO2 | ||||||||||
OR | 1.185a | 1.137a | 1.036 | 0.999 | 0.978 | 0.995 | 0.968a | 0.918 | 1.010 | 1.030a |
95% CI | 1.06~1.32 | 1.02~1.27 | 0.91~1.17 | 0.87~1.15 | 0.95~1.01 | 0.97~1.02 | 0.94~0.99 | 0.83~1.02 | 0.99~1.03 | 1.01~1.15 |
CO | ||||||||||
OR | 1.117a | 1.038 | 0.978 | 0.930a | 0.862a | 0.886a | 0.924a | 0.942a | 0.960 | 1.018 |
95% CI | 1.05~1.19 | 0.97~1.11 | 0.92~1.04 | 0.87~0.99 | 0.79~0.94 | 0.83~0.95 | 0.87~0.98 | 0.89~0.99 | 0.90~1.02 | 0.95~1.09 |
O3 | ||||||||||
OR | 1.108a | 0.999 | 0.999 | 0.885 | 0.984 | 0.993 | 1.084a | 1.000 | 0.907 | 1.106a |
95% CI | 1.03~1.19 | 0.98~1.00 | 0.99~1.00 | 0.82~0.96 | 0.92~1.05 | 0.94~1.05 | 1.02~1.15 | 0.93~1.07 | 0.84~1.00 | 1.03~1.12 |