Table 4 Landscape fire related PM2.5 exposure and fire days in the study period for women who provided breast milk samples in the Sydney Greater Metropolitan Region (n = 56)
Variables | Outside the fire period (n = 36) | During the fire period (n = 20) | p-value* | ||
|---|---|---|---|---|---|
Median (Q1, Q3) | Range | Median (Q1, Q3) | Range | Â | |
Average PM2.5(µg/m3) | 7.7 (6.6, 10.2) | 4.8 – 12.3 | 16.1 (9.6, 23.7) | 5.0 – 40.6 |  < 0.001 |
Peak PM2.5 (µg/m3) | 11.4 (10.0, 14.8) | 7.9 – 16.6 | 31.9 (19.1, 59.4) | 8.9 – 97.3 |  < 0.001 |
Fire days | 0 (0,0) | 0 – 2 | 0.5 (0,3.5) | 0—6 |  < 0.001 |
Maximum consecutive fire days | 0 (0,0) | 0 – 1 | 0.5 (0,3) | 0—11 |  < 0.001 |