Table 3.
Relative all cause mortality in the first 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)
| Smoking status | Social class | |||
|---|---|---|---|---|
| I + II | IIIN | IIIM | IV + V | |
| Women | ||||
| Never smokers: | n=693 | n=933 | n=737 | n=1289 |
| No of deaths (deaths from lung cancer) | 68 (1) | 118 (2) | 147 (5) | 227 (4) |
| Relative mortality (95% CI): | ||||
| Adjusted for age only | 1 | 1.28 (0.95 to 1.72) | 1.79 (1.34 to 2.38) | 1.65 (1.26 to 2.16) |
| Fully adjusted* | 1 | 1.24 (0.92 to 1.67) | 1.63 (1.22 to 2.17) | 1.44 (1.10 to 1.89) |
| Current smokers: | n=623 | n=874 | n=653 | n=1585 |
| No of deaths (deaths from lung cancer) | 123 (9) | 133 (18) | 172 (15) | 359 (37) |
| Relative mortality (95% CI): | ||||
| Adjusted for age only | 2.37 (1.76 to 3.18) | 1.86 (1.39 to 2.49) | 3.02 (2.28 to 4.0) | 2.73 (2.11 to 3.54) |
| Fully adjusted* | 2.24 (1.67 to 3.02) | 1.70 (1.27 to 2.27) | 2.54 (1.91 to 3.36) | 2.28 (1.76 to 2.96) |
| Former smokers: | n=135 | n=168 | n=96 | n=202 |
| No of deaths (deaths from lung cancer) | 29 (0) | 20 (2) | 22 (0) | 45 (2) |
| Relative mortality (95% CI): | ||||
| Adjusted for age only | 2.48 (1.60 to 3.82) | 1.35 (0.82 to 2.22) | 2.29 (1.42 to 3.71) | 2.20 (1.51 to 3.20) |
| Fully adjusted* | 2.39 (1.55 to 3.70) | 1.37 (0.83 to 2.26) | 1.95 (1.21 to 3.16) | 1.79 (1.23 to 2.62) |
| Men | ||||
| Never smokers: | n=306 | n=149 | n=418 | n=292 |
| No of deaths (deaths from lung cancer) | 47 (2) | 25 (0) | 81 (5) | 68 (0) |
| Relative mortality (95% CI): | ||||
| Adjusted for age only | 1.80 (1.24 to 2.60) | 1.76 (1.11 to 2.78) | 2.28 (1.65 to 3.15) | 2.44 (1.75 to 3.42) |
| Fully adjusted* | 1.84 (1.27 to 2.67) | 1.70 (1.07 to 2.69) | 2.18 (1.58 to 3.01) | 2.14 (1.53 to 3.0) |
| Current smokers: | n=620 | n=448 | n=1734 | n=1276 |
| No of deaths (deaths from lung cancer) | 183 (32) | 162 (19) | 637 (103) | 502 (92) |
| Relative mortality (95% CI): | ||||
| Adjusted for age only | 3.79 (2.87 to 5.0) | 4.57 (3.44 to 6.07) | 4.88 (3.80 to 6.27) | 5.10 (3.96 to 6.57) |
| Fully adjusted* | 3.48 (2.63 to 4.60) | 3.92 (2.95 to 5.21) | 4.08 (3.17 to 5.25) | 4.23 (3.28 to 5.47) |
| Former smokers: | n=403 | n=232 | n=661 | n=428 |
| No of deaths (deaths from lung cancer) | 75 (4) | 58 (2) | 168 (17) | 125 (11) |
| Relative mortality (95% CI): | ||||
| Adjusted for age only | 2.11 (1.52 to 2.92) | 2.52 (1.77 to 3.58) | 2.98 (2.25 to 3.95) | 3.09 (2.30 to 4.15) |
| Fully adjusted* | 2.06 (1.49 to 2.87) | 2.32 (1.63 to 3.30) | 2.68 (2.02 to 3.56) | 2.62 (1.95 to 3.53) |
IIIN=III non-manual. IIIM=III manual.
*Adjusted for age, systolic blood pressure, body mass index, plasma cholesterol concentration, and percentage predicted FEV1