Table 2 Description of personal exposures by season. N(%) or median [IQR]
Exposure | LOD | Overall (N = 219) | Fall (N = 60) | Spring (N = 42) | Summer (N = 63) | Winter (N = 54) | |
|---|---|---|---|---|---|---|---|
O3 | 1.5 ppb | Below LOD | 3 (5.2) | ||||
Above LOD | 55 (94.8) | ||||||
Median [IQR] | 6.4 [3.8, 12.5] | ||||||
NO2 | 2 ppb | Below LOD | 3 (1.5) | 1 (2.0) | 1 (2.7) | 1 (1.7) | 0 (0.0) |
Above LOD | 196 (98.5) | 49 (98.0) | 36 (97.3) | 59 (98.3) | 52 (100.0) | ||
Median [IQR] | 16.0 [10.9, 24.8] | 15.2 [10.7, 21.6] | 16.1 [10.9, 28.2] | 15.2 [9.8, 24.5] | 18.6 [13.0, 27.4] | ||
PM10 | 1 ug/m3 | Below LOD | 1 (0.5) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (1.9) |
Above LOD | 208 (99.5) | 58 (100.0) | 38 (100.0) | 61 (100.0) | 51 (98.1) | ||
Median [IQR] | 21.8 [14.7, 32.9] | 23.3 [16.1, 31.6] | 21.3 [15.8, 39.6] | 21.6 [14.6, 35.9] | 22.6 [13.5, 31.5] | ||
Black Carbon | 0.3 µg/m3 | Below LOD | 136 (67.7) | 42 (73.7) | 30 (88.2) | 28 (47.5) | 36 (70.6) |
Above LOD | 65 (32.3) | 15 (26.3) | 4 (11.8) | 31 (52.5) | 15 (29.4) | ||
Median [IQR] | 0.3 [0.3, 0.5] | 0.3 [0.3, 0.3] | 0.3 [0.3, 0.3] | 0.3 [0.3, 2.2] | 0.3 [0.3, 0.4] | ||
Brown Carbon | 0.3 µg/m3 | Below LOD | 74 (36.8) | 12 (21.1) | 6 (17.6) | 38 (64.4) | 18 (35.3) |
Above LOD | 127 (63.2) | 45 (78.9) | 28 (82.4) | 21 (35.6) | 33 (64.7) | ||
Median [IQR] | 0.7 [0.3, 1.2] | 0.9 [0.6, 1.2] | 0.8 [0.4, 1.4] | 0.3 [0.3, 0.9] | 0.6 [0.3, 1.1] | ||
ETS | 0.3 µg/m3 | Below LOD | 67 (33.3) | 7 (12.3) | 8 (23.5) | 36 (61.0) | 16 (31.4) |
Above LOD | 134 (66.7) | 50 (87.7) | 26 (76.5) | 23 (39.0) | 35 (68.6) | ||
Median [IQR] | 1.1 [0.3, 2.5] | 1.4 [0.8, 2.6] | 2.3 [0.4, 3.5] | 0.3 [0.3, 1.3] | 1.1 [0.3, 2.5] | ||
Endotoxin | 0.0012 EU/m3 | Median [IQR] | 1.4 [0.4, 3.3] | 2.1 [0.7, 3.2] | 0.8 [0.2, 2.6] | 1.6 [0.5, 3.8] | 1.6 [0.5, 3.4] |
Glucan | 1.447 pg/m3 | Median [IQR] | 158.7 [107.5, 265.5] | 178.2 [119.3, 238.0] | 175.6 [109.3, 302.8] | 159.9 [107.0, 241.1] | 144.8 [97.3, 201.5] |