Symptom |
Prevalence (%) in those who answered question1-150 | Gas hob OR (95% Cl) | Gas oven OR (95% Cl) | Gas fire OR (95% Cl) |
Wheeze | 27 | 1.18 (0.98 to 1.43) | 1.02 (0.87 to 1.19) | 0.98 (0.84 to 1.15) |
Daytime breathlessness at rest | 19 | 1.11 (0.90 to 1.38) | 0.93 (0.77 to 1.12) | 0.93 (0.78 to 1.11) |
Woken at night by breathlessness | 10 | 0.98 (0.74 to 1.31) | 1.00 (0.79 to 1.28) | 1.05 (0.83 to 1.32) |
Chest tightness for an hour or longer in the morning on waking | 3 | 1.17 (0.69 to 1.96) | 0.81 (0.51 to 1.29) | 0.95 (0.62 to 1.46) |
Usually bring up phlegm from chest first thing in the morning | 20 | 0.97 (0.78 to 1.20) | 1.07 (0.90 to 1.28) | 0.99 (0.83 to 1.17) |
One or more colds gone to chest | 34 | 1.20 (1.01 to 1.43) | 1.04 (0.90 to 1.21) | 1.02 (0.89 to 1.18) |
Breathlessness, wheeze, or chest tightness induced by going from a warm room into cold air | 19 | 1.18 (0.96 to 1.44) | 1.04 (0.88 to 1.24) | 1.02 (0.86 to 1.20) |
Breathlessness, wheeze, or chest tightness induced by exercise | 51 | 1.12 (0.95 to 1.32) | 1.17 (1.02 to 1.34) | 1.02 (0.90 to 1.17) |
Breathlessness, wheeze, or chest tightness induced by going into a smoky room | 21 | 1.11 (0.91 to 1.35) | 1.05 (0.89 to 1.25) | 1.05 (0.89 to 1.24) |
Breathlessness, wheeze, or chest tightness induced by going into a room where the air was full of dust | 18 | 1.02 (0.83 to 1.27) | 1.07 (0.90 to 1.28) | 0.97 (0.82 to 1.15) |
↵1-150 Information about individual symptoms was missing for up to 296 subjects.
Associations with each type of gas appliance were examined in separate regression models with adjustment for sex, age, social class, and smoking habits.