| |
Office workers
|
Truck drivers
|
Mean exposure difference (95% CI)b
|
|---|
|
(observations = 120)
|
(observations = 120)
|
|---|
| |
N
|
Mean
|
SD
|
10pct
|
25pct
|
Median
|
75pct
|
90pct
|
N
|
Mean
|
SD
|
10pct
|
25pct
|
Median
|
75pct
|
90pct
| |
|---|
|
PM2.5
|
120
|
94.59
|
64.91
|
22.39
|
48.48
|
86.17
|
126.56
|
183.44
|
119
|
126.83
|
68.82
|
46.26
|
73.86
|
116.78
|
160.49
|
213.94
|
32.24 (15.19; 49.28)
|
|
EC
|
118
|
13.01
|
4.04
|
7.11
|
9.99
|
13.16
|
15.85
|
18.35
|
120
|
17.27
|
6.69
|
8.93
|
12.78
|
16.86
|
21.03
|
26.21
|
4.26 (2.84; 5.68)
|
|
K
|
118
|
0.76
|
0.77
|
0.18
|
0.27
|
0.56
|
0.82
|
2.07
|
120
|
1.31
|
1.07
|
0.34
|
0.44
|
0.89
|
2.06
|
2.81
|
0.55 (0.31; 0.79)
|
|
S
|
118
|
6.19
|
5.05
|
0.61
|
1.66
|
5.30
|
8.64
|
13.77
|
120
|
8.43
|
4.92
|
2.30
|
4.87
|
6.98
|
12.47
|
16.14
|
2.24 (0.97; 3.52)
|
|
Fe
|
118
|
0.38
|
0.21
|
0.17
|
0.24
|
0.34
|
0.44
|
0.69
|
120
|
1.01
|
0.64
|
0.38
|
0.50
|
0.82
|
1.34
|
1.75
|
0.63 (0.51; 0.75)
|
|
Si
|
118
|
0.79
|
0.53
|
0.28
|
0.45
|
0.68
|
1.03
|
1.43
|
120
|
2.37
|
1.76
|
0.64
|
0.82
|
2.09
|
3.54
|
4.13
|
1.58 (1.25; 1.91)
|
|
Al
|
118
|
0.54
|
0.25
|
0.23
|
0.37
|
0.50
|
0.70
|
0.86
|
120
|
1.36
|
0.93
|
0.44
|
0.59
|
1.29
|
1.86
|
2.32
|
0.82 (0.65; 0.99)
|
|
Zn
|
118
|
0.15
|
0.17
|
0.02
|
0.05
|
0.08
|
0.22
|
0.37
|
120
|
0.27
|
0.22
|
0.06
|
0.09
|
0.17
|
0.41
|
0.68
|
0.12 (0.07; 0.17)
|
|
Ca
|
118
|
0.32
|
0.18
|
0.15
|
0.19
|
0.28
|
0.41
|
0.54
|
120
|
2.09
|
2.2
|
0.29
|
0.4
|
1.58
|
3.08
|
4.52
|
1.76 (1.36; 2.17)
|
|
Ti
|
118
|
0.02
|
0.01
|
0.00
|
0.01
|
0.02
|
0.03
|
0.04
|
120
|
0.06
|
0.04
|
0.02
|
0.03
|
0.05
|
0.08
|
0.10
|
0.04 (0.03; 0.04)
|
- aMeasured during the work hours of examination days using light-weight personal monitors.
- bMean exposure levels of truck drivers – mean exposure levels of office workers.
