Table 4.
The summary of BTEX concentrations in the indoor air of the case and control houses (μg/m3)
| Contaminant | Mean ± SD (min-max) |
Median | Geometric (mean ± SD) | P value | |||
|---|---|---|---|---|---|---|---|
| Case | Control | Case | Control | Case | Control | Comparison of cases and controls | |
| Benzene |
7.19 ± 3.09 (2.83–14.5) |
0.82 ± 0.5 (0.06–1.76) |
6.99 | 0.78 | 6.62 ± 1.51 | 0.62 ± 2.39 |
P < 0.05 P = 0.00 |
| Toluene |
1.62 ± 0.69 (0.36–3.39) |
0.3 ± 0.22 (0.1–0.96) |
1.38 | 0.23 | 1.42 ± 1.59 | 0.20 ± 2.52 |
P < 0.05 P = 0.00 |
| Ethylbenzene | ND* | ND | ND | ND | ND | ND | – |
| Xylenes |
2.9 ± 1.66 (1.27–8.5) |
0.31 ± 0.22 (0.01–0.97) |
2.21 | 0.27 | 2.55 ± 1.63 | – |
P < 0.05 P = 0.00 |
| BTEX |
11.74 ± 3.85 (5.13–21.25) |
1.44 ± 0.73 (0.42–3.57) |
10.63 | 1.41 | 11.2 ± 1.37 | 1.22 ± 1.77 |
P < 0.05 P = 0.00 |
*: Not Detected