Odds ratio (95% confidence intervals) for current smokers in 12579 men and 15132 women aged 39–79 years, of the EPIC-Norfolk cohort, 1993–1997 for regression models based on age, social class, level of education, and quintiles of Townsend deprivation index entered simultaneously
| Current smokers | ||||
|---|---|---|---|---|
| Men | Women | |||
| Predictor variables | OR* | p value | OR* | p value |
| *Odds ratio indicates change in probability compared with the reference category. †Reference category. | ||||
| Social class | ||||
| I† | ||||
| II | 1.76 (1.29 to 2.39) | <0.001 | 1.43 (1.10 to 1.87) | 0.008 |
| III non-manual | 1.73 (1.23 to 2.44) | 0.002 | 1.60 (1.22 to 2.12) | 0.001 |
| III manual | 2.45 (1.79 to 3.37) | <0.001 | 1.51 (1.15 to 2.00) | 0.003 |
| IV | 2.48 (1.79 to 3.46) | <0.001 | 1.67 (1.25 to 2.22) | <0.001 |
| V | 3.02 (2.03 to 4.48) | <0.001 | 1.98 (1.42 to 2.75) | <0.001 |
| Educational level | ||||
| Degree† | ||||
| A level | 1.63 (1.32 to 2.01) | <0.001 | 1.34 (1.09 to 1.658) | 0.006 |
| O level | 1.73 (1.33 to 2.26) | <0.001 | 1.42 (1.13 to 1.771) | 0.002 |
| No qualifications | 1.97 (1.58 to 2.47) | <0.001 | 1.67 (1.36 to 2.049) | <0.001 |
| Townsend index quintiles | ||||
| Quintile 1† (<−3.8) | ||||
| Quintile 2 (−3.79 to −2.92) | 0.98 (0.82 to 1.17) | 0.82 | 1.17 (0.99 to 1.39) | 0.07 |
| Quintile 3 (−2.91 to −2.09) | 1.24 (1.04 to 1.48) | 0.02 | 1.23 (1.04 to 1.46) | 0.02 |
| Quintile 4 (−2.08 to −0.55) | 1.14 (0.95 to 1.36) | 0.15 | 1.36 (1.15 to 1.60) | <0.001 |
| Quintile 5 (>−0.55) | 1.84 (1.56 to 2.17) | <0.001 | 1.86 (1.58 to 2.18) | <0.001 |