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 | 1.006 | 1.038a | 1.001 | 0.991 | 1.002 | 0.995 | 1.010 | 1.028a | 0.992 | 1.021 |
95% CI | 0.99~1.01 | 1.01~1.07 | 0.98~1.02 | 0.97~1.01 | 0.98~1.02 | 0.98~1.01 | 0.99~1.03 | 1.01~1.05 | 0.97~1.01 | 0.99~1.04 |
PM10 | ||||||||||
OR | 1.006 | 1.021a | 0.993 | 0.989 | 1.000 | 0.999 | 1.007 | 1.012a | 0.990 | 1.008 |
95% CI | 0.98~1.02 | 1.01~1.04 | 0.99~1.01 | 0.97~1.00 | 0.99~1.01 | 0.99~1.01 | 0.99~1.02 | 1.00~1.02 | 0.98~1.00 | 0.99~1.02 |
SO2 | ||||||||||
OR | 1.052 | 1.018 | .920a | 1.002 | 1.035 | 0.998 | 0.987 | 1.019 | 0.995 | 1.033 |
95% CI | 0.99~1.12 | 0.97~1.07 | 0.88~0.96 | 0.95~1.05 | 0.98~1.09 | 0.95~1.05 | 0.94~1.03 | 0.98~1.06 | 0.96~1.04 | 0.99~1.07 |
NO2 | ||||||||||
OR | 1.032 | 1.043a | 0.962a | 1.010 | 1.013 | 1.016 | 0.986 | 1.021 | 1.000 | 1.034a |
95% CI | 0.99~1.08 | 1.01~1.08 | 0.93~0.99 | 0.97~1.05 | 0.98~1.06 | 0.98~1.05 | 0.95~1.02 | 0.98~1.06 | 0.97~1.03 | 1.00~1.07 |
CO | ||||||||||
OR | 1.905a | 1.069a | 0.970 | 0.906a | 0.887 | 0.902a | 0.924 | 0.971 | 0.990 | 1.001 |
95% CI | 1.02~1.17 | 1.001~1.14 | 0.91~1.04 | 0.84~0.98 | 0.81~0.97 | 0.84~0.97 | 0.87~0.98 | 0.91~1.03 | 0.931~1.05 | 0.93~1.08 |
O3 | ||||||||||
OR | 1.004 | 1.000 | 0.999 | 0.934 | 1.006 | 0.958 | 1.023 | 1.103a | 0.987 | 1.007 |
95% CI | 0.93~1.09 | 0.99~1.00 | 0.99~1.00 | 0.86~1.01 | 0.94~1.08 | 0.90~1.01 | 0.96~1.08 | 1.03~1.18 | 0.89~1.04 | 0.99~1.02 |