Gender | Male | 0.27 (0.02) | 0.029 | 20.5 (1.6) | 0.031 |
Female | 0.13 (0.02) | 11.5 (2.0) |
Industry | Bathtub | 0.21 (0.08) | 0.019 | 19.4 (7.5) | <0.001 |
Boat build | 0.21 (0.03) | 14.0 (1.9) |
Pipe, tank | 0.21 (0.05) | 16.5 (2.0) |
Truck, RV | 0.33 (0.04) | 27.3 (2.9) |
Boat repair | 0.09 (0.02) | 9.2 (1.4) |
Respirator use | No | 0.23 (0.02) | 0.088 | 15.9 (1.3) | 0.001 |
Yes | 0.33 (0.05) | 32.6 (4.6) |
Glove use | No | 0.20 (0.03) | 0.009 | 15.8 (1.8) | 0.003 |
Yes | 0.32 (0.03) | 24.5 (2.4) |
Working in a confined space | No | 0.22 (0.03) | 0.152 | 16.1 (1.5) | 0.002 |
Yes | 0.29 (0.04) | 25.2 (3.0) |
Recreational drug use | No | 0.20 (0.05) | 0.350 | 16.0 (2.4) | 0.335 |
Yes | 0.26 (0.02) | 19.8 (1.6) |
Non-prescription drug use | No | 0.23 (0.03) | 0.453 | 18.7 (2.4) | 0.745 |
Yes | 0.26 (0.03) | 19.6 (1.8) |
Prescription drug use | No | 0.16 (0.04) | 0.020 | 13.4 (2.3) | 0.007 |
Yes | 0.28 (0.03) | 21.1 (1.7) |
Styrofoam food or drink containers | No | 0.25 (0.03) | 0.888 | 21.1 (2.4) | 0.310 |
Yes | 0.25 (0.03) | 18.1 (1.8) |
Current no. of cigarettes per day | <1 | 0.25 (0.03) | 0.689 | 19.1 (1.9) | 0.131 |
1–10 | 0.26 (0.06) | 24.2 (4.6) |
11–20 | 0.21 (0.04) | 13.6 (2.1) |
>20 | 0.32 (0.12) | 24.5 (6.3) |
Current no. of alcoholic beverages per week | <1 | 0.21 (0.03) | 0.272 | 14.4 (1.6) | 0.003 |
1–7 | 0.31 (0.04) | 23.9 (3.0) |
8–21 | 0.25 (0.06) | 20.8 (3.4) |
>21 | 0.23 (0.11) | 38.3 (12.1) |
Ethnicity | Caucasian | 0.20 (0.02) | 0.007 | 15.2 (1.4) | <0.001 |
Hispanic | 0.34 (0.05) | 27.2 (3.4) |
Other† | 0.37 (0.11) | 30.5 (9.1) |
Season | Dec–Feb | 0.38 (0.05) | 0.016 | 33.8 (4.2) | <0.001 |
| Mar–May | 0.20 (0.07) | 12.2 (3.1) |
| June–Aug | 0.24 (0.03) | 15.8 (1.7) |
| Sep–Nov | 0.19 (0.03) | 14.4 (1.9) |
Time of day | 21:00–4:59 | 0.52 (0.12) | 0.001 | 45.3 (8.2) | <0.001 |
| 13:00–16:59 | 0.23 (0.02) | 17.2 (1.3) |
| 17:00–20:59 | 0.15 (0.04) | 11.0 (2.8) |
| |
Correlation coefficient
| |
Correlation coefficient
| |
Age | | −0.227 | <0.001 | −0.291 | <0.001 |
Body mass index‡ | | 0.054 | 0.379 | −0.007 | 0.911 |
Income | | −0.108 | 0.079 | −0.163 | 0.006 |
Air acetone | | 0.250 | <0.001 | 0.349 | <0.001 |