Table 4.
Relative all cause mortality in the second 14 years of follow-up of women and men aged 45-64 years at recruitment categorised by social class and smoking status (with women in social classes I and II who never smoked as the reference group)
| Social class | ||||
|---|---|---|---|---|
| I + II | IIIN | IIIM | IV + V | |
| Women | ||||
| Never smokers: | n=617 | n=811 | n=584 | n=1056 |
| No of deaths (deaths from lung cancer) | 206 (2) | 318 (6) | 268 (1) | 464 (9) |
| Relative mortality (95% CI): | ||||
| Adjusted for age only | 1 | 1.17 (0.98 to 1.39) | 1.28 (1.07 to 1.53) | 1.28 (1.09 to 1.51) |
| Fully adjusted* | 1 | 1.16 (0.97 to 1.38) | 1.19 (0.99 to 1.43) | 1.18 (1.0 to 1.39) |
| Current smokers: | n=495 | n=735 | n=479 | n=1215 |
| No of deaths (deaths from lung cancer) | 233 (23) | 350 (37) | 265 (23) | 632 (68) |
| Relative mortality (95% CI): | ||||
| Adjusted for age only | 1.77 (1.46 to 2.13) | 1.80 (1.52 to 2.14) | 2.16 (1.80 to 2.59) | 2.06 (1.76 to 2.41) |
| Fully adjusted* | 1.80 (1.49 to 2.17) | 1.79 (1.51 to 2.13) | 2.02 (1.68 to 2.43) | 1.90 (1.63 to 2.23) |
| Former smokers: | n=105 | n=147 | n=73 | n=156 |
| No of deaths (deaths from lung cancer) | 43 (2) | 43 (1) | 36 (0) | 66 (3) |
| Relative mortality (95% CI): | ||||
| Adjusted for age only | 1.28 (0.92 to 1.78) | 0.97 (0.70 to 1.35) | 1.56 (1.09 to 2.22) | 1.22 (0.93 to 1.61) |
| Fully adjusted* | 1.28 (0.92 to 1.77) | 1.0 (0.72 to 1.39) | 1.46 (1.02 to 2.08) | 1.13 (0.85 to 1.49) |
| Men | ||||
| Never smokers: | n=258 | n=124 | n=333 | n=222 |
| No of deaths (deaths from lung cancer) | 95 (3) | 56 (1) | 167 (3) | 123 (1) |
| Relative mortality (95% CI): | ||||
| Adjusted for age only | 1.25 (0.98 to 1.60) | 1.61 (1.20 to 2.17) | 1.93 (1.57 to 2.36) | 2.0 (1.60 to 2.50) |
| Fully adjusted* | 1.33 (1.04 to 1.70) | 1.67 (1.24 to 2.25) | 1.93 (1.57 to 2.37) | 1.90 (1.52 to 2.38) |
| Current smokers: | n=435 | n=284 | n=1087 | n=769 |
| No of deaths (deaths from lung cancer) | 262 (30) | 177 (23) | 701 (106) | 506 (87) |
| Relative mortality (95% CI): | ||||
| Adjusted for age only | 2.78 (2.31 to 3.34) | 2.69 (2.20 to 3.29) | 3.12 (2.67 to 3.64) | 3.25 (2.76 to 3.82) |
| Fully adjusted* | 2.80 (2.33 to 3.36) | 2.62 (2.14 to 3.21) | 3.0 (2.56 to 3.51) | 3.13 (2.65 to 3.69) |
| Former smokers: | n=323 | n=174 | n=487 | n=299 |
| No of deaths (deaths from lung cancer) | 149 (5) | 94 (5) | 247 (14) | 183 (7) |
| Relative mortality (95% CI): | ||||
| Adjusted for age only | 1.61 (1.30 to 1.99) | 1.99 (1.56 to 2.54) | 2.0 (1.66 to 2.40) | 2.37 (1.94 to 2.89) |
| Fully adjusted* | 1.63 (1.32 to 2.01) | 1.93 (1.51 to 2.47) | 1.96 (1.63 to 2.37) | 2.26 (1.85 to 2.76) |
IIIN=III non-manual. IIIM=III manual.
*Adjusted for age, systolic blood pressure, body mass index, plasma cholesterol concentration, and percentage predicted FEV1