Standardised mortality ratios for all cause mortality and cancer mortality in the phenoxy herbicide producers and sprayers
| n | All cancer deaths | ||||
|---|---|---|---|---|---|
| Obs/exp | SMR | (95% CI) | |||
| *Those classified as exposed to TCDD, higher chlorinated dioxins, and phenoxy herbicides. | |||||
| †Some workers worked in more than one department; they were included in the SMR of both departments. | |||||
| ‡Those classified as not exposed to TCDD, higher chlorinated dioxins, and phenoxy herbicides. | |||||
| py, person-years. | |||||
| Producers* | 813 | 43/34.62 | 1.24 | (0.90 to 1.67) | |
| 0–5 years | (17613 py) | 26/19.18 | 1.36 | (0.89 to 1.99) | |
| 5–10 years | 8/6.52 | 1.23 | (0.53 to 2.42) | ||
| >10 years | 9/8.93 | 1.01 | (0.46 to 1.91) | ||
| Test for linear trend | p = 0.44 | ||||
| Producers by sex | |||||
| Female | 100 | 1/3.35 | 0.30 | (0.01 to 1.66) | |
| (2320 py) | |||||
| Male | 713 | 42/31.27 | 1.34 | (0.97 to 1.82) | |
| 0–5 years | (15293 py) | 25/16.99 | 1.47 | (0.95 to 2.17) | |
| 5–10 years | 8/5.92 | 1.35 | (0.58 to 2.66) | ||
| >10 years | 9/8.36 | 1.08 | (0.49 to 2.04) | ||
| test for linear trend | p = 0.43 | ||||
| Producers by department† | |||||
| Synthesis workers | 164 | 11/6.49 | 1.69 | (0.85 to 3.03) | |
| 0–5 years | (3620 py) | 4/4.34 | 0.92 | (0.25 to 2.36) | |
| 5–10 years | 4/1.26 | 3.18 | (0.86 to 8.13) | ||
| >10 years | 3/0.89 | 3.37 | (0.70 to 9.85) | ||
| Test for linear trend | p = 0.04 | ||||
| Formulation and lab | 152 | 9/5.48 | 1.64 | (0.75 to 3.12) | |
| 0–5 years | (3652 py) | 7/2.20 | 3.19 | (1.28 to 6.57) | |
| 5–10 years | 0/0.47 | 0.00 | (0.00 to 7.92) | ||
| >10 years | 2/2.82 | 0.71 | (0.09 to 2.56) | ||
| Test for linear trend | p = 0.03 | ||||
| Maintenance and waste | 169 | 10/6.86 | 1.46 | (0.70 to 2.68) | |
| 0–5 years | (3407 py) | 6/3.90 | 1.54 | (0.56 to 3.35) | |
| 5–10 years | 2/1.22 | 1.63 | (0.20 to 5.92) | ||
| >10 years | 2/1.73 | 1.16 | (0.14 to 4.18) | ||
| Test for linear trend | p = 0.76 | ||||
| Packing and transport | 243 | 10/12.06 | 0.83 | (0.40 to 1.53) | |
| 0–5 years | (5257 py) | 8/7.41 | 1.08 | (0.57 to 2.13) | |
| 5–10 years | 1/2.97 | 0.34 | (0.01 to 1.88) | ||
| >10 years | 1/1.68 | 0.59 | (0.02 to 3.32) | ||
| Test for linear trend | p = 0.34 | ||||
| Other exposed workers | 163 | 8/9.17 | 0.87 | (0.38 to 1.72) | |
| 0–5 years | (3543 py) | 4/3.45 | 1.16 | (0.32 to 2.97) | |
| 5–10 years | 1/1.43 | 0.70 | (0.02 to 3.90) | ||
| >10 years | 3/4.29 | 0.70 | (0.14 to 2.04) | ||
| Test for linear trend | p = 0.50 | ||||
| Unexposed producers‡ | 212 | 13/11.83 | 1.10 | (0.59 to 1.88) | |
| 0–5 years | (4712 py) | 7/7.09 | 0.99 | (0.40 to 2.03) | |
| 5–10 years | 4/2.87 | 1.39 | (0.38 to 3.57) | ||
| >10 years | 2/1.86 | 1.07 | (0.13 to 3.88) | ||
| Test for linear trend | p = 0.78 | ||||
| Sprayers | 699 | 35/42.86 | 0.82 | (0.57 to 1.14) | |
| 0–10 years | (20044 py) | 5/6.56 | 0.76 | (0.25 to 1.78) | |
| 10–20 years | 13/14.08 | 0.92 | (0.49 to 1.58) | ||
| >20 years | 17/22.22 | 0.77 | (0.45 to 1.22) | ||
| Test for linear trend | p = 0.86 | ||||
| Sprayers by year starting | |||||
| Sprayers starting <1973 | 558 | 30/40.09 | 0.75 | (0.50 to 1.07) | |
| (16883 py) | |||||
| Sprayers starting ⩾1973 | 141 | 5/2.77 | 1.81 | (0.59 to 4.22) | |
| (3161 py) | |||||