Males | Females | |
Demographic characteristics | ||
Subjects | 46 | 54 |
Age yrs | 58 (52–64) | 57 (52–64)*** |
Home ownership | 75 | 77*** |
Lived locally most of life | 89 | 91 |
Occupational exposure | 67 | 36*** |
Smoking history | ||
Never smoked | 30 | 44*** |
Ex-smoker | 45 | 32*** |
Current smoker | 25 | 24 |
Pack-yrs for smokers | 26 (13–44) | 22 (9–36)*** |
Self-reported symptoms | ||
Any respiratory symptoms | 57 | 53*** |
Cough | 23 | 18*** |
Sputum | 30 | 20*** |
Dyspnoea | 33 | 34 |
Wheeze | 42 | 38*** |
History of hay fever | 24 | 28*** |
Data are presented as % or median (interquartile range). ***: p<0.001