|
Reference |
Study Population |
Exposed Cases |
Estimated Relative Risk (95% CI) |
||
|
Blair et al., 1998 |
Aircraft-maintenance workers in Utah |
|
|||
|
|
Any exposure (males and females) |
14 |
1.3 (0.5–3.4) |
||
|
|
Males |
|
|||
|
|
Low level intermittent |
4 |
0.5 (0.1–1.9) |
||
|
|
Low level continuous |
4 |
0.8 (0.2–3.2) |
||
|
|
Frequent peaks |
4 |
0.8 (0.2–3.3) |
||
|
|
Females |
|
|||
|
|
Low level intermittent |
4 |
4.4 (1.0–20.4) |
||
|
|
Low level continuous |
1 |
2.4 (0.2–24.3) |
||
|
|
Frequent peaks |
1 |
0.9 (0.1–8.9) |
||
|
|
Cumulative exposure, males (mortality) |
|
|||
|
|
No exposure |
10 |
1.7 (0.5–5.5) |
||
|
|
<5 unit-years |
4 |
1.0 (0.2–4.2) |
||
|
|
5–25 unit-years |
2 |
0.8 (0.1–4.4) |
||
|
|
>25 unit-years |
4 |
1.2 (0.3–4.7) |
||
|
|
Cumulative exposure, females (mortality) |
|
|||
|
|
No exposure |
11 |
1.0 (0.1–9.9) |
||
|
|
<5 unit-years |
2 |
3.2 (0.5–19.8) |
||
|
|
5–25 unit-years |
1 |
4.3 (0.4–43.4) |
||
|
|
≥25 unit-years |
1 |
1.3 (0.1–13.2) |
||
|
Axelson et al., 1994 |
Male workers in Sweden, ever exposed |
1 |
0.57 (0.01–3.17) |
||
|
Benzene |
|||||
|
Cohort Studies—Mortality |
|||||
|
Ireland et al., 1997 |
Male US chemical-plant workers |
|
|||
|
|
Production workers |
|
|||
|
|
Nonexposed |
1 |
0.5 (0.0–2.8) |
||
|
|
Any exposure |
3 |
3.2 (0.7–9.4) |
||
|
|
<12ppm-month |
0 |
0.0 (0.0–10.1) |
||
|
|
12–72 ppm-month |
2 |
6.8 (0.8–2.5) |
||
|
|
>72 ppm-month |
1 |
3.7 (0.1–20.1) |
||
|
Schnatter et al., 1996a |
Male Canadian petroleum-distribution workers |
|
|||
|
|
0.00–0.49 ppm-years |
3 |
1.00 |
||
|
|
0.50–7.99 ppm-years |
1 |
0.39 (0.01–5.16) |
||
|
|
8.00–1 9.99 ppm-years |
1 |
0.60 (0.01–7.83) |
||
|
|
20–219.8 ppm-years |
2 |
1.22 (0.07–20.0) |
||
|
Yin et al., 1996a,b |
Chinese factory workers, ever exposed |
1 |
0.4 (0.0–10.7) |
||
|
Wong, 1995 |
Male US Pliofilm workers in Ohio (through 1987) |
4 |
2.91 (0.79–7.45) |
||
|
|
<40 ppm-years |
3 |
3.21 (0.66–9.39) |
||
|
|
40–200 ppm-years |
0 |
0 (0–12.29) |
||
|
|
200–400 ppm-years |
0 |
0 (0–36.89) |
||
|
|
>400 ppm-years |
1 |
25.17 (0.63–139.83) |
||
|
Rinsky et al., 1987 |
Male US Pliofilm workers in Ohio (through 1981) |
4 |
4.09 (1.10–10.47) |
||
|
|
<40 ppm-years |
3 |
4.58 (0.92–13.39) |
||
|
|
40–200 ppm-years |
0 |
0 |
||
|
|
200–400 ppm-years |
0 |
0 |
||
|
|
>400 ppm-years |
1 |
53.47 (0.70–297.53) |
||