Table 2 Average exposure level of PM2.5 in each time window based on LUR model estimates of the study population in Wuhan, China
From: Maternal PM2.5 exposure triggers preterm birth: a cross-sectional study in Wuhan, China
Exposure | N | Mean | Min | Percentiles of exposure | Max | ||
|---|---|---|---|---|---|---|---|
P25 | P50 | P75 | |||||
Entire pregnancy | 2101 | 84.54 | 58.53 | 75.39 | 79.27 | 95.49 | 129.53 |
 Trimester 1 | 2101 | 69.12 | 30.49 | 50.20 | 65.59 | 86.60 | 147.83 |
 Trimester 2 | 2099 | 92.28 | 33.03 | 68.71 | 89.80 | 107.69 | 188.16 |
 Trimester 3 | 2099 | 92.22 | 21.90 | 61.05 | 87.96 | 114.94 | 207.17 |