Patient demographics and disease characteristics at baseline#
| Characteristic | Value |
| Male/female | 82/43 |
| Age yrs | 66.3±8.6 |
| FEV1 % pred | 40.9±18.1 |
| FEV1/FVC % | 50.0±14.0 |
| Duration of COPD yrs | 7.4±7.4 |
| Smoking history | |
| Ex-smoker | 77 (61.6) |
| Smoker | 39 (31.2) |
| Never smoked | 9 (7.2) |
| Patients with ≥1 comorbidity | 97 (77.6) |
| Number of exacerbations in the past 12 months | 4.6 (1–50)¶ |
| Time since last exacerbation days | 93.6 (0–720)¶ |
| Duration of last exacerbation days | 12.7 (1–119)¶ |
| Time between exacerbations days | 115.6 (1–546)¶ |
| Healthcare resource use per patient in the past 12 months | |
| Healthcare professional visits | 4.1 (0–19) |
| Emergency room visits | 1.1 (0–10) |
| Hospitalisations | 0.8 (0–8) |
| Stays in intensive care unit | 0.04 (0–1) |
Data are presented as n, mean±sd, n (%) or mean (range). FEV1: forced expiratory volume in one second; FVC: forced vital capacity; COPD: chronic obstructive pulmonary disease. #: n = 125; ¶: data determined from patient responses. According to physician records, all patients met the inclusion criteria.