Effect | n | Estimate | SE | p value |
---|---|---|---|---|
AIR, concentration of benzene in air; PREBREATH, concentration of benzene in pre-exposure breath; TRAVELTIME, time lag between end of exposure and breath sampling; EXERTION, ordinal level of physical activity (0–24); SMOKED, smoked cigarette(s) on the day of sampling; RESPIRATOR, used a respirator; IRRITATION, reported skin irritation. | ||||
Intercept | 108 | 1.319 | 0.323 | <0.0001 |
AIR ln(µg/m3) | 108 | 0.299 | 0.041 | <0.0001 |
PREBREATH ln(µg/m3) | 108 | 0.289 | 0.082 | 0.0006 |
TRAVELTIME (min) | 108 | −0.014 | 0.004 | 0.0009 |
EXERTION | 108 | 0.031 | 0.014 | 0.0322 |
SMOKED | – | – | 0.0144 | |
Yes | 23 | 0.385 | 0.155 | 0.0144 |
No | 85 | 0 | – | – |
RESPIRATOR | – | – | 0.0037 | |
Yes | 96 | −0.605 | 0.204 | 0.0037 |
No | 12 | 0 | – | – |
IRRITATION | – | – | 0.0245 | |
Yes | 57 | 0.324 | 0.142 | 0.0245 |
No | 51 | 0 | – | – |