Variables | n |
Separate analysis4-151
RR (95% CI) |
Simultaneous analysis4-152
RR (95% CI) |
Lung cancer: | |||
Type of worker: | |||
Comparison workers | 51 | 1.0 | 1.0 |
Chrome platers | 65 | 1.44 (1.00 to 2.08) | 1.39 (0.96 to 2.00) |
Cigarette smoking: daily habit (g/day)4-153: | |||
Lifelong non-smoker | 6 | 1.0 | 1.0 |
1–4 | 4 | 5.734-160 (1.62 to 20.32) | 5.504-160 (1.55 to 19.57) |
5–14 | 21 | 3.154-150 (1.27 to 7.82) | 3.094-150 (1.24 to 7.66) |
15–24 | 46 | 5.584-165 (2.38 to 13.11) | 5.504-165 (2.34 to 12.92) |
⩾25 | 19 | 6.014-165 (2.39 to 15.10) | 5.974-165 (2.37 to 15.02) |
Ex-smoker | 4 | 0.84 (0.24 to 2.97) | 0.84 (0.24 to 2.98) |
Smoking status unknown | 16 | 3.404-150 (1.33 to 8.70) | 3.324-150 (1.28 to 8.60) |
Employment4-154: | |||
Employed | 33 | 1.0 | 1.0 |
Left employment | 83 | 0.99 (0.66 to 1.48) | 0.98 (0.65 to 1.49) |
All causes excluding lung cancer: | |||
Type of worker: | |||
Referents | 354 | 1.0 | 1.0 |
Chrome platers | 346 | 1.10 (0.95 to 1.28) | 1.10 (0.95 to 1.28) |
Cigarette smoking: daily habit (g/day)4-153: | |||
Lifelong non-smoker | 112 | 1.0 | 1.0 |
1–4 | 16 | 1.21 (0.72 to 2.04) | 1.20 (0.71 to 2.04) |
5–14 | 149 | 1.26 (0.99 to 1.62) | 1.26 (0.98 to 1.61) |
15–24 | 181 | 1.314-150 (1.03 to 1.66) | 1.314-150 (1.03 to 1.66) |
⩾25 | 84 | 1.644-165 (1.23 to 2.18) | 1.644-165 (1.23 to 2.19) |
Ex-smoker | 80 | 0.97 (0.73 to 1.30) | 0.98 (0.73 to 1.30) |
Smoking status unknown | 78 | 0.94 (0.71 to 1.26) | 0.94 (0.70 to 1.27) |
Employment4-154: | |||
Employed | 197 | 1.0 | 1.0 |
Left employment | 503 | 0.95 (0.80 to 1.12) | 0.99 (0.83 to 1.17) |
↵4-150 p<0.05;
↵4-160 p<0.01;
↵4-165 p<0.001.
↵4-151 Separate analysis of the three variables (type of worker, cigarette smoking, employment), each set of relative risks adjusted for sex and age (15–39, 40–44, 45–49, 50–54, 55–59, 60–64, 65–69, 70–74, 75–79, 80–84).
↵4-152 Simultaneous analysis of the three variables, adjusted for sex and age.
↵4-153 g/day. Combined use of hand rolled and manufactured cigarettes, manufactured cigarettes were considered to contain 1g of tobacco.