Table 2 Adjusted RRs* (95% CI) for mortality from rectal cancer and exposure to cumulative metalworking fluid (by type of fluid) estimated in Poisson regression.
| Straight | Soluble | Synthetic | |||
|---|---|---|---|---|---|
| Cut‐offs | RR (95% CI) | Cut‐offs | RR (95% CI) | Cut‐offs | RR (95% CI) |
| 0 | 1 | 0 | 1 | 0 | 1 |
| >0–0.68 | 1.2 (0.6 to 2.2) | >0–6.51 | 1.2 (0.5 to 3) | >0–0.52 | 0.6 (0.2 to 1.9) |
| >0.68–1.93 | 1.6 (0.9 to 3.2) | >6.51–15.55 | 1.9 (0.8 to 4.6) | >0.52–1.34 | 1.3 (0.4 to 4) |
| >1.93–10.09 | 1.5 (0.8 to 2.8) | >15.55–48.7 | 1.4 (0.6 to 3.6) | >1.34–2.54 | 1.8 (0.6 to 5.7) |
| >10.09 | 2.7 (1.4 to 5.3) | >48.7 | 1.9 (0.6 to 6.4) | >2.54 | 1.5 (0.4 to 6.3) |
*Models adjusted for age, sex, race, plant, start year, calendar year and all types of fluid exposure.