Crude and adjusted hazards ratios (HRs) (95% CIs) for selected work related predictors of liver and biliary tract cancers (n=80)
| Variable | n | Person-years | Deaths | Mortality / 100000 | Crude | Adjusted3-150 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HR (95% CI) | p Value3-151 | HR (95% CI) | p Value3-151 | ||||||||||||
| Age at first exposure (y): | 0.08 | 0.16 | |||||||||||||
| <25 | 3619 | 118081 | 24 | 20.33 | Reference | Reference | |||||||||
| 25–34 | 4173 | 136243 | 39 | 28.63 | 1.5 (0.9 to 2.4) | 1.4 (0.8 to 2.3) | |||||||||
| ⩾35 | 2317 | 62221 | 17 | 27.32 | 2.0 (1.1 to 3.8) | 1.8 (1.0 to 3.5) | |||||||||
| Duration of exposure (y): | <0.0001 | <0.001 | |||||||||||||
| <5 | 4774 | 136200 | 7 | 5.14 | Reference | Reference | |||||||||
| 5–9 | 2383 | 71806 | 10 | 13.93 | 2.8 (1.1 to 7.4) | 2.8 (1.0 to 7.3) | |||||||||
| 10–19 | 1992 | 69015 | 39 | 56.51 | 8.5 (3.8 to 19.1) | 9.0 (4.0 to 20.7) | |||||||||
| ⩾20 | 960 | 39524 | 24 | 60.72 | 7.3 (3.1 to 17.0) | 6.0 (2.5 to 14.4) | |||||||||
| Year of first exposure: | 0.005 | 0.02 | |||||||||||||
| <1950 | 2425 | 92645 | 48 | 51.81 | Reference | Reference | |||||||||
| 1950–59 | 2806 | 98729 | 23 | 23.30 | 0.5 (0.3 to 0.9) | 0.5 (0.3 to 0.8) | |||||||||
| 1960–72 | 4878 | 125171 | 9 | 7.19 | 0.3 (0.2 to 0.7) | 0.6 (0.3 to 1.4) | |||||||||