Table 4 Exposure levels of pollutants during first trimester in the study population (ug/m3) (Differential testing of contaminant exposure)
Pollutant | Spontaneous abortion | Full-term birth | z | P | ||||
|---|---|---|---|---|---|---|---|---|
Median | P25 | P75 | Median | P25 | P75 | |||
PM2.5 | 46.85 | 30.44 | 78.26 | 46.82 | 39.45 | 58.51 | -0.54 | 0.59 |
PM10 | 103.90 | 67.82 | 132.46 | 105.08 | 97,17 | 112.32 | -0.42 | 0.67 |
SO2 | 7.44 | 5.38 | 10.67 | 7.42 | 7.16 | 7.89 | -0.37 | 0.71 |
NO2 | 36.40 | 28.90 | 44.72 | 34.50 | 32.63 | 35.70 | -2.80 | 0.01 |
O3 | 96.49 | 58.99 | 112.93 | 101.16 | 92.90 | 107.00 | -2.04 | 0.02 |
