Table 4.
Predictors of blood BTEX levels in the highest quartile among participants with blood 2,5-dimethylfuran < 0.014 ng/mL (n=423)
| Benzene (n=104 in Q4) |
Toluene (n=105 in Q4) |
Ethylbenzene (n=74 in Q4) |
o-Xylene (n=102 in Q4) |
m-/p-Xylene (n=105 in Q4) |
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Predictor | N | PR (95% CI) | N | PR (95% CI) | N | PR (95% CI) | N | PR (95% CI) | N | PR (95% CI) |
| Women | 23 | 0.7 (0.5, 1.1) | 21 | 0.6 (0.4, 1.0) | 17 | 0.8 (0.5, 1.2) | 18 | 0.5 (0.3, 0.9) | 19 | 0.6 (0.4, 0.9) |
| ≥8 hours away from home | 34 | 0.6 (0.4, 0.9) | 43 | 0.9 (0.7, 1.3) | 30 | 1.0 (0.7, 1.5) | 41 | 0.9 (0.7, 1.3) | 42 | 0.9 (0.7, 1.3) |
| Required support | 34 | 1.4 (1.0, 2.0) | 30 | 1.1 (0.8, 1.6) | 19 | 0.9 (0.6, 1.4) | 27 | 1.0 (0.7, 1.4) | 29 | 1.1 (0.7, 1.6) |
| Lived near waste site | 4 | 2.7 (1.6, 4.6) | 2 | 1.3 (0.4, 4.3) | 1 | 1.2 (0.3, 5.9) | 1 | 0.6 (0.1, 3.9) | 2 | 1.3 (0.4, 4.8) |
| Fall/Winter blood collection | 80 | 0.4 (0.3, 0.6) | 91 | 0.8 (0.5, 1.3) | 67 | 0.8 (0.4, 1.5) | 87 | 0.7 (0.5, 1.1) | 91 | 0.8 (0.5, 1.3) |
| Smoky/chemical smells | 3 | 1.7 (0.8, 3.6) | 4 | 2.1 (1.0, 4.3) | 4 | 3.0 (1.5, 6.1) | 4 | 2.1 (1.0, 4.5) | 4 | 2.1 (1.0, 4.4) |
| Home construction | 10 | 1.3 (0.8, 2.1) | 7 | 0.9 (0.5, 1.8) | 2 | 0.3 (0.1, 1.1) | 5 | 0.6 (0.3, 1.4) | 6 | 0.8 (0.4, 1.6) |
Q4, Fourth (highest) quartile; N, number of participants with both the exposure and elevated compound (highest quartile); PR, prevalence ratio; 95% CI, 95% confidence interval.
≥8 hours away from home, reported time away from home in the past 24 hours; Required support, reported receiving financial or material support in past year; Lived near waste site, reported living within ½ mile of Superfund or hazardous waste sites since 2012; Smoky/chemical smells, smelled smoke or any unusual chemical smells in or around the home in the past 24 hours; Home construction, reported any new construction to the home in the past six months