Baseline characteristics of study population
| Variables | Randomised patients (n=233) | Lost to follow-up (n=41) | |
| Action plan group (n=111) | Control group (n=122) | ||
| Gender, male | 65 (59) | 69 (57) | 27 (51) |
| Age | 66.1±11.2 | 65.1±10.0 | 66.5±11.8 |
| BMI | 26.1±5.5 | 26.7±6.5 | 24.1±3.5 |
| Living alone | 27 (23) | 22 (18) | 11 (27) |
| Educational level | |||
| Lower secondary or less | 69 (62) | 83 (68) | 29 (70) |
| Higher secondary | 29 (26) | 31 (25) | 9 (23) |
| College/university | 13 (12) | 8 (7) | 3 (7) |
| Current smoking | 31 (28) | 37 (30) | 12 (29) |
| GOLD stage | |||
| I | 14 (13) | 13 (11) | 2 (6)* |
| II | 55 (50) | 58 (47) | 18 (43) |
| III | 30 (27) | 38 (31) | 11 (27) |
| IV | 11 (10) | 12 (10) | 10 (24) |
| FEV1 | 1.55±0.60 | 1.59±0.71 | 1.35±0.70† |
| FEV1 % predicted | 56.7±20.3 | 56.5±20.6 | 50.9±23.7 |
| FVC | 3.03±0.79 | 3.17±0.91 | 2.86±0.94 |
| Recruited from | |||
| GP | 18 (16) | 17 (14) | 2 (5)* |
| Outpatient clinic | 93 (84) | 105 (86) | 39 (95) |
Data are presented as n, mean±SD or n (%).
↵* p<0.05 (χ2 test).
↵† p<0.05 (Student t test): difference between patients lost to follow-up compared with patients with 6 months of follow-up.
BMI, body mass index; FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity; GOLD, Global initiative of Obstructive Lung Disease.