Variable | Model 1: age, sex tobacco and income | Model 2: age, sex, tobacco and housing | Model 3: all variables |
OR and CI | OR and CI | OR and CI | |
Gender female | Ref | Ref | Ref |
Male | 1.38 (1.23 to 1.54) | 1.32 (1.18 to 1.48) | 1.32 (1.17 to 1.49) |
Age | 0.97 (0.96 to 0.97) | 0.97 (0.96 to 0.98) | 0.97 (0.96 to 0.98) |
Smoking status (current) | 1.68 (1.45 to 1.95) | 1.77 (1.53 to 2.06) | 1.70 (1.47 to 1.98) |
Ex-smokers | Ref | Ref | Ref |
Occupational exposure to dust, fume and chemicals | – | – | 1.12 (1.00 to 1.25) |
No occupational exposure to dust, fumes and chemicals | – | – | Ref |
Age started smoking | – | – | 1.001 (0.990 to 1.012) |
Housing: warm and dry | – | Ref | Ref |
Housing: cold and damp | – | 1.83 (1.54 to 2.17) | 1.78 (1.50 to 2.11) |
Housing: cold | – | 1.69 (1.37 to 2.09) | 1.61 (1.30 to 2.00) |
Housing damp | – | 1.52 (1.13 to 2.05) | 1.49 (1.01 to 2.00) |
HH income: ≤£20 000 | 1.82 (1.45 to 2.30) | – | 1.72 (1.36 to 2.17) |
HH income: £20 001– £30 000 | 1.32 (1.03 to 1.68) | – | 1.27 (0.99 to 1.63) |
HH income: £30 001– £40 000 | 1.11 (0.83 to 1.48) | – | 1.08 (0.81 to 1.44) |
HH income: ≥£40 000 | Ref | – | Ref |
HH income: rather not say | 1.46 (1.13 to 1.88) | – | 1.40 (1.08 to 1.82) |
Bold type indicates significance at ≤0.05 level.
HH, household.