Subjects n | 3265 |
Females % | 44.2 |
Age yrs | 63.3±10.8 |
Retired % | 54.8 |
Current smokers % | 46.2 |
Cumulative cigarette consumption pack-yrs | 45.2±35.2 |
Family history of COPD % | 37.8 |
Other conditions % | 48.1 |
Arthritis | 7.9 |
Asthma | 3.8 |
Cancer | 3.2 |
Diabetes | 6.1 |
Kidney problems | 11.3 |
Heart disease | 10.1 |
Hypertension | 7.5 |
Self-assessed severity of COPD % | |
Mild | 31.8 |
Moderate | 44.1 |
Severe | 21.0 |
MRC dyspnoea score# | 2.6±1.4 |
Data are presented as percentage or mean±sd
MRC: Medical Research Council
#: modified according to 29