Concentration (range) in μg/m3 and distribution of selected VOCs indoors for cases and controls
| Volatile organic compound | Cases | Controls | |||||||
|---|---|---|---|---|---|---|---|---|---|
| 25th | 75th | 90th | Median | 25th | 75th | 90th | Median | p value | |
| Data are shown as 25th, 75th, and 90th percentiles and median (range) for cases and controls. | |||||||||
| Benzene | 17.4 | 34.7 | 46.8 | 24.8 (0.01–81.9) | 2.01 | 24.1 | 31.7 | 11.8 (0.01–58.9) | 0.000 |
| Toluene | 6.3 | 20.6 | 36.9 | 11.9 (0.8–153.9) | 3.6 | 12.1 | 22.5 | 6.2 (0.01–64.8) | 0.000 |
| m-Xylene | 0.6 | 3.3 | 15.5 | 1.4 (0.01–319.8) | 0.01 | 1.5 | 5.2 | 0.7 (0.01–31.5) | 0.016 |
| o,p-Xylene | 2.8 | 12.3 | 25.1 | 5.9 (0.01–93.1) | 2.1 | 6.2 | 13.6 | 3.2 (0.01–57.4) | 0.005 |
| Ethylbenzene | 0.01 | 1.4 | 3.6 | 1.4 (0.01–14.7) | 0.01 | 1.5 | 3.6 | 0.8 (0.01–16.5) | 0.425 |
| Styrene | 0.01 | 0.1 | 1.3 | 0.01 (0.01–6.4) | 0.01 | 0.01 | 0.8 | 0.01 (0.01–0.8) | 0.230 |
| Chlorobenzene | 0.01 | 0.4 | 46.8 | 0.01 (0.01–45.6) | 0.01 | 0.01 | 1.4 | 0.01 (0.01–21.5) | 0.003 |
| 1,2-dichlorobenzene | 3.2 | 19.1 | 53.5 | 9.4 (0.01–201.8) | 1.7 | 11.9 | 0.8 | 4.3 (0.01–34.7) | 0.000 |
| 1,3-dichlorobenzene | 0.01 | 12.3 | 31.1 | 3.6 (0.01–174.3) | 0.01 | 5.0 | 22.3 | 1.1 (0.01–53.0) | 0.003 |
| 1,4-dichlorobenzene | 0.01 | 1.2 | 6.7 | 0.01 (0.01–123.9) | 0.01 | 0.01 | 5.0 | 0.01 (0.01–34.7) | 0.540 |
| Total VOCs | 45.0 | 125.5 | 204.6 | 78.5 (10.8–622.7) | 19.9 | 69.8 | 101.0 | 36.2 (2.5–198.2) | 0.000 |